CN102593962B - Device for transmitting kilowatt wireless power at moderate distance - Google Patents
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- CN102593962B CN102593962B CN201210064442.3A CN201210064442A CN102593962B CN 102593962 B CN102593962 B CN 102593962B CN 201210064442 A CN201210064442 A CN 201210064442A CN 102593962 B CN102593962 B CN 102593962B
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Abstract
The invention provides a device for transmitting kilowatt wireless power at a moderate distance and belongs to the wireless power transmission field. The device for transmitting the kilowatt wireless power at the moderate distance comprises a kilowatt sinusoidal wave power transmitter, a kilowatt power receiver and a frequency controller. The device for transmitting the kilowatt wireless power at the moderate distance is capable of achieving kilowatt sinusoidal wave generation, kilowatt wireless power transmission and kilowatt wireless power receiving and providing wireless electricity power energy for multiple equipment, or is applicable to wireless charging or wireless power supply, and is particularly applied in special situations where power is not suitable to be supplied by wires.
Description
Technical field
The present invention relates to wireless power transmission field, it is a kind of high-power wireless power transfer of moderate distance, be specifically related to the resonant wireless electric energy transmission device of a kind of multikilowatt, it can be applicable to, and radio car charges or the occasion of special requirement radio energy, can realize the wireless transmission of multikilowatt power electric energy within the scope of moderate distance.
Background technology
Current nearly all multikilowatt power consumption equipment is all using tangible medium (as: plain conductor, electric wire) just can carry out electric power Energy Transfer as main connection, even short distance electric power transfer (as: robot, electric automobile), also to connect through power line, make need to be using electric power as power electric equipment, its use is subject to the impact of each charging station or cable power.If use wireless power transmission technology and device, realize and not transmitted by the active power of foreign object or surrounding environment influence, just can reach by wireless transmission means the transmission of electric power, in the time using these electric equipments, just convenient so.In addition, in some special application places, as maybe can not being used the occasion of wire power supply, the inconveniences such as underwater operation, medical embedded equipment, wireless sensor network all there is very actual using value.
Wireless power transmission mainly contains three kinds of modes at present: induction, and electromagentic resonance formula and electromagnetic radiation formula.Induction, generally adopt primary end with magnetic core and the transformer secondary output end with magnetic core, carry out electrical energy transfer by the close coupling of two magnetic core electromagnetic fields, the electric energy energy grade of transmission is high, and delivery of electrical energy distance is short, in several cm range; Electromagentic resonance formula, carries out electrical energy transfer by the magnetic field loose coupling that adopts primary coil and secondary coil, and transmission range generally, between several centimetres to tens centimetres, belongs to the delivery of electrical energy of moderate distance, and the energy grade of delivery of electrical energy is higher; Electromagnetic radiation formula, the frequency level of employing is very high, is generally tens MHz, and the distance of transmission can reach meter level, conventionally can transmit tens electric energy to several hectowatts.
Chinese patent application CN200610124129.9 provides a kind of inductive coupled wireless power transfer device, it comprises energy transmitter, contactless transformer and energy receiver, described energy transmitter comprises current rectifying and wave filtering circuit, high-frequency inverter circuit and the control circuit for generation of proper frequency and pulse width signal, first the power frequency civil power of input produces high voltage direct current supply high frequency inverter circuit through current rectifying and wave filtering circuit, and high-frequency inverter circuit converts electric energy to high-frequency alternating current and outputs to contactless transformer primary side; The primary and secondary magnetic core of contactless transformer is separate, and coil is wound on respectively on corresponding magnetic core; Energy receiver comprises compensating circuit, current rectifying and wave filtering circuit and for controlling the pwm control circuit of the stable output of curtage, and compensating circuit forms stable output through over commutation filter circuit and pwm control circuit after receiving the energy of contactless transformer secondary end induction coupling.But its laser propagation effect is not good.In this patent, because transformer is with magnetic core, therefore delivery of electrical energy distance is short, can only be in several cm range electric energy transmitting, cannot realize the delivery of electrical energy of moderate distance.
Chinese patent application CN200910166188.6 provides a kind of system that Direct Conductivity contact just can electric energy transmitting that do not need, described system comprises primary unit, at least one second unit separating with described primary unit, and delivery of electrical energy face, when described delivery of electrical energy face is formed and is configured such that proper described system in use, second unit can be placed on described or near described to receive electric energy, wherein: described primary unit has a generating apparatus, be arranged in described delivery of electrical energy face place or be parallel to described delivery of electrical energy face, for generate electromagnetic field on the delivery of electrical energy region of described, described second unit or each described second unit comprise at least one electric conductor, when described second unit is on described delivery of electrical energy face or when the described delivery of electrical energy face, described described electromagnetic field and described at least one electric conductor coupling that generating apparatus generates, and induce electric current, in described conductor, flow, described delivery of electrical energy region is greater than the region of described being covered by described second unit, described field distribution is on described delivery of electrical energy region, make when on the face that second unit is placed on to the arbitrary position in delivery of electrical energy region with at least one gyrobearing of the axle about perpendicular to described or along being placed on described when neighbouring by the normal of described of any such position in described delivery of electrical energy region, this second unit can receive the electric energy from described primary unit, and described generating apparatus comprises one or more conducting pieces, for generation of magnetic flux, and comprise be arranged on substantially whole described delivery of electrical energy location or under magnetic material, described magnetic material for be coupled with the magnetic flux being produced by described conducting piece and by described magnetic flux distributions for being parallel to described delivery of electrical energy face, make locate or on all described position substantially in described delivery of electrical energy region, all there is basic size uniformly in described given distance of distance and the field intensity that can be applicable to the described electromagnetic field of measuring in the predetermined work direction about position at described.This patent structure is comparatively complicated, and the electric current in transmission region is little, and the electric energy energy grade of transmission is low, cannot realize powerful delivery of electrical energy within the scope of moderate distance.
In addition, wireless power transmission technology is a kind of non-contact type electric energy transmission technology.According to delivery of electrical energy theory, along with scientific and technological progress and social demand, wireless power transmission technology is greatly developed, and resonant wireless power transmission technology more and more becomes the focus that people pay close attention in recent years, and lot of domestic and foreign scholar is in this problem of research.The research group of the assistant professor Marin Soljacic of department of physics of Massachusetts Institute Technology in 2006, by being separated by, the 60W bulb of 2.16 meters is lighted.The distance of this scheme transmission is distant, but energy grade is lower.
For the needs of more convenient production and actual life, need a kind of equipment or the method that can carry high-power power transmission badly.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of device for transmitting kilowatt wireless power at moderate distance, this device for transmitting kilowatt wireless power at moderate distance can be realized the sinusoidal wave generation of multikilowatt, the conveying of multikilowatt radio energy, the reception of multikilowatt radio energy.Device for transmitting kilowatt wireless power at moderate distance can provide the wireless power energy for plurality of devices, or can be used for wireless charging or wireless power, is specially adapted to the special occasions that is not suitable for powering by wire.
According to technical scheme of the present invention, a kind of device for transmitting kilowatt wireless power at moderate distance is provided, it comprises the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller, wherein the sinusoidal wave power delivery device of multikilowatt receives electric energy from electrical network, to multikilowatt electric energy receiver wireless transmission electric energy, between the sinusoidal wave power delivery device of multikilowatt and multikilowatt electric energy receiver, be to contact by mutual inductance; The magnetic field that multikilowatt electric energy receiver produces by the sinusoidal wave power delivery device of multikilowatt obtains electric energy, for follow-up load; Frequency controller can gather the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver, and according to regulating flow process to regulate the sinusoidal wave power delivery device of multikilowatt or multikilowatt electric energy receiver, thereby make the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver reach resonance state, make described device for transmitting kilowatt wireless power at moderate distance reach optimum delivery of electrical energy.
Wherein moderate distance scope be referred to as 5cm (centimetre) between 50cm.
Further, described device for transmitting kilowatt wireless power at moderate distance comprises the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller, wherein, the sinusoidal wave power delivery device of multikilowatt is made up of current source, resonant energy supplementary circuitry and resonant energy output circuit; Resonant energy supplementary circuitry is made up of switch element one (SW1) and switch element two (SW2), and frequency in accordance with regulations and phase place supplement electric energy to resonant energy output circuit; Resonant energy output circuit is made up of resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, and resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance form resonator system; This resonator system is used for setting the sinusoidal wave power delivery device of multikilowatt frequency, and realize energy exchanges with magnetic field and electric field form respectively in resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, in resonance output winding, produce the resonance current of assigned frequency, and resonance current in resonance output winding is formed can be at the alternating magnetic field of delivery of electrical energy scope inner conversion; Multikilowatt electric energy receiver, it is for receiving through the be coupled magnetic field energy of the alternating magnetic field of coming of resonance output winding; Multikilowatt electric energy receiver receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity and turnable resonator receiving inductance by resonance and forms, and resonance receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity, turnable resonator receiving inductance for setting the frequency of multikilowatt electric energy receiver; Frequency controller is used for adjusting the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver, make the frequency of the sinusoidal wave power delivery device of multikilowatt identical with the frequency of multikilowatt electric energy receiver, make multikilowatt electric energy receiver in regulation space, receive optimum resonant energy.
Preferably, the sinusoidal wave power delivery device frequency of multikilowatt and multikilowatt electric energy receiver frequency range are at 50KHZ-1MHZ, the electric energy power bracket 0-30KW of device for transmitting kilowatt wireless power at moderate distance transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
More preferably, frequency controller, by regulating turnable resonator output capacitance or turnable resonator outputting inductance to adjust the sinusoidal wave power delivery device of multikilowatt frequency, makes the frequency of the sinusoidal wave power delivery device of multikilowatt and the Frequency Synchronization of multikilowatt electric energy receiver.
Further, frequency controller is determined output frequency size by detecting resonance output winding both end voltage waveform.Frequency controller, by regulating turnable resonator reception electric capacity or turnable resonator receiving inductance to adjust multikilowatt electric energy receiver frequency, makes the frequency of multikilowatt electric energy receiver and the Frequency Synchronization of the sinusoidal wave power delivery device of multikilowatt.Frequency controller, by detecting the voltage in load, is determined the size of receive frequency.
In addition, resonance output winding and resonance receiving coil adopt copper pipe (or copper cash) coiling, for single turn or multiple single turn parallel-connection structure, in resonance output winding and resonance receiving coil, single-turn circular coil is of a size of 10cm～45cm, turn-to-turn distance is 0.1-5cm, and resonance output winding and resonance receiving coil are circular or the various shape such as square or polygon.
The invention solves wireless transmission electric energy energy grade problem on the low side within the scope of moderate distance.Device for transmitting kilowatt wireless power at moderate distance has frequency controller, can regulate both sides oscillatory regime, make the advantage of device steady operation in optimum resonance operating state, can accurately transmit the large power, electrically energy of multikilowatt to multikilowatt electric energy receiver, be applied at present radio car charging, the application scenarios such as relatively large mobile electromechanical equipment power supply and other relatively high power load power consumption equipment power supplies.
Accompanying drawing explanation
Fig. 1 circuit diagram;
Fig. 2 device for transmitting kilowatt wireless power at moderate distance structural representation;
Fig. 3 parallel resonance equivalent circuit diagram;
Fig. 4 turnable resonator output capacitance C12 syndeton schematic diagram;
Fig. 5 resonance output winding L11 oscillogram;
Fig. 6 resonance receiving coil L21 oscillogram;
Fig. 7 frequency controller schematic diagram;
Fig. 8 frequency sampling plate schematic diagram;
Signal generator wiring schematic diagram when Fig. 9 has a multikilowatt electric energy receiver
Figure 10 frequency adjustment logic flow schematic diagram;
When Figure 11 has a multikilowatt electric energy receiver, frequency specifically regulates schematic flow sheet;
When Figure 12 has n multikilowatt electric energy receiver, frequency specifically regulates schematic flow sheet;
Figure 13 logic controller master unit wiring schematic diagram;
Figure 14 logic controller expanding element one wiring schematic diagram;
Figure 15 logic controller expanding element two wiring schematic diagrams;
Figure 16 resonance output winding and resonance receiving coil schematic diagram
Embodiment
In the present invention, described device for transmitting kilowatt wireless power at moderate distance, formed by the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller, can wireless transmission multikilowatt electric power energy, they occur to contact by mutual inductance.
Circuit diagram of the present invention as shown in Figure 1.The sinusoidal wave power delivery device of described multikilowatt receives electric energy from electrical network, and to described multikilowatt electric energy receiver wireless transmission electric energy, they by mutual inductance, contact occur.The magnetic field that multikilowatt electric energy receiver produces by the sinusoidal wave power delivery device of multikilowatt obtains electric energy, for load.Frequency controller can gather the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver, and according to regulating flow process to regulate the sinusoidal wave power delivery device of multikilowatt or multikilowatt electric energy receiver, thereby make the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver reach resonance state, make described device for transmitting kilowatt wireless power at moderate distance reach optimum delivery of electrical energy.
Described device for transmitting kilowatt wireless power at moderate distance can be realized the delivery of electrical energy of multikilowatt within the scope of moderate distance.In the present invention, moderate distance scope is referred to as between 1cm to 80cm.Use the present invention, can realize at 22cm left and right place transmission 10KW (kilowatt) electric energy, the present invention preferably uses at 1-60cm, more preferably uses between 5-50cm.Known according to current research and art technology knowledge, if used in shorter distance, laser propagation effect is better, but electromagnetic radiation will be stronger, will greatly cause electromagnetic pollution to surrounding environment.By experiment, between apart from 10-40cm, use technology of the present invention, not only make the electromagnetic pollution of surrounding environment be controlled under the electromagnetic pollution numerical value of national regulation, can also realize the wireless unobstructed transmission of electric energy.
The sinusoidal wave power delivery device of described multikilowatt, has current source, resonant energy supplementary circuitry and resonant energy output circuit.Resonant energy supplementary circuitry frequency and phase place in accordance with regulations supplements electric energy to resonant energy output circuit; Resonant energy output circuit is made up of resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance form resonator system, be used for setting the sinusoidal wave power delivery device of multikilowatt frequency, energy exchanges with magnetic field and electric field form respectively in resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, produces the resonance current of assigned frequency in resonance output winding; Resonance current in resonance output winding is formed on the alternating magnetic field within the scope of delivery of electrical energy.
Described multikilowatt electric energy receiver, for receiving the resonance output winding magnetic field energy of coming that is coupled; Multikilowatt electric energy receiver receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity and turnable resonator receiving inductance by resonance and forms; Resonance receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity, turnable resonator receiving inductance for setting the frequency of multikilowatt electric energy receiver.
The sinusoidal wave power delivery device of described multikilowatt obtains electric energy by current source from electrical network, and energy is passed to resonant energy supplementary circuitry.Turnable resonator output capacitance and resonance output capacitance in resonant energy output circuit are to be connected in parallel, and turnable resonator outputting inductance and the employing of resonance output winding are connected in series afterwards and resonance output capacitance is connected in parallel; Turnable resonator in multikilowatt electric energy receiver receives electric capacity and resonance reception electric capacity is to be connected in parallel, and turnable resonator receiving inductance receives Capacitance parallel connection with resonance after being connected in series with the employing of resonance receiving coil and is connected.In device for transmitting kilowatt wireless power at moderate distance, can there be multiple multikilowatt electric energy receivers.
Frequency controller is used for adjusting frequency, and makes the frequency of the sinusoidal wave power delivery device of multikilowatt identical with the frequency of multikilowatt electric energy receiver, in regulation space, makes multikilowatt electric energy receiver receive optimum resonant energy.
In device for transmitting kilowatt wireless power at moderate distance, resonance output winding and resonance receiving coil adopt copper pipe (or copper cash) coiling, for single turn or multiple single turn parallel-connection structure, resonance output winding and resonance receiving coil coil are of a size of 10cm～45cm, turn-to-turn distance is 0.1-5cm, and resonance output winding and resonance receiving coil are the shapes such as circular, square, polygon; The structure of process simple deformation is within the scope of claim.In device for transmitting kilowatt wireless power at moderate distance, the sinusoidal wave power delivery device frequency of multikilowatt and multikilowatt electric energy receiver frequency range are at 50KHZ-1MHZ, the electric energy power bracket 0-30KW of transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
Describe device for transmitting kilowatt wireless power at moderate distance of the present invention in detail below in conjunction with accompanying drawing, illustrate as just example below, know with those skilled in the art know that, all fall among the present invention as long as meet the method and system of inventive concept; Additionally, protection scope of the present invention only should be limited to the concrete structure of device for transmitting kilowatt wireless power at moderate distance or the design parameter of parts.
Fig. 2 is device for transmitting kilowatt wireless power at moderate distance structural representation.
Device for transmitting kilowatt wireless power at moderate distance, is made up of the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller.In the sinusoidal wave power delivery device of multikilowatt, obtain electric energy by current source from electrical network, and energy is passed to resonant energy supplementary circuitry, the output of current source is that P point and Q point and P point and Q point are the input point of described resonant energy supplementary circuitry simultaneously.In device for transmitting kilowatt wireless power at moderate distance, can there be multiple multikilowatt electric energy receivers.The sinusoidal wave power delivery device of multikilowatt, comprises current source, resonant energy supplementary circuitry and resonant energy output circuit.Resonant energy supplementary circuitry is made up of switch element one SW1 and switch element two SW2, and frequency in accordance with regulations and phase place supplement electric energy to resonant energy output circuit; Resonant energy output circuit is made up of resonance output capacitance C11, resonance output winding L11, turnable resonator output capacitance C12, turnable resonator outputting inductance L12, and C11, L11, C12, L12 jointly form resonator system and set the sinusoidal wave power delivery device of multikilowatt frequency f s.Energy exchanges with magnetic field and electric field form respectively in resonator system, the generation alternating magnetic field of the resonance current in resonance output winding within the scope of delivery of electrical energy.
The sinusoidal wave power delivery device of multikilowatt will obtain electrical energy transfer to resonant energy supplementary circuitry from electrical network through current source.The output of current source is P point and Q point, and P point is connected the input of resonant energy supplementary circuitry with Q point.Can regulate the energy size of resonant energy supplementary circuitry output electric energy by the output voltage that regulates P point and Q to order.By detecting the frequency of resonance output winding L11 both sides in resonant energy output circuit, resonant energy supplementary circuitry is determined frequency and the phase place moment of makeup energy, and energy is ceaselessly carried to resonance receiving coil by resonance output winding.The output of resonant energy supplementary circuitry is connected in T and T2.
Described resonant energy supplementary circuitry is obtained electric energy by P point and Q point from current source, and resonant energy supplementary circuitry comprises switch element one SW1 and switch element two SW2.Resonant energy supplementary circuitry output is T point and T2 point, and switch element-SW1 is connected between P point and T2 point, and switch element two SW2 are connected between P point and T point.The two SW2 alternate turns work of switch element one SW1 and switch element, be nanosecond (ns) level overlapping time, overlapping time of the present invention, scope was 100-450ns.
Resonant energy supplements process: in the time of switch element two SW2 conducting, switch element one SW1 disconnects, and now electric energy directly injects resonant energy output circuit; In the time of switch element one SW1 conducting, switch element two SW2 disconnect, and now electric energy is back to current source through SW1.Switch element SW1 and switch element SW2 turn-on and turn-off have certain overlapping time, guarantee the normal work of current source.
Multikilowatt electric energy receiver, for receiving the resonance output winding magnetic field energy of coming that is coupled, received by resonance that capacitor C 21, resonance receiving coil L21, turnable resonator receive capacitor C 22 and turnable resonator receiving inductance L22 forms, C21, L21, C22, L22 form resonator system and for setting the frequency f r of multikilowatt electric energy receiver.
Resonant energy output circuit is made up of resonance output capacitance C11, resonance output winding L11, turnable resonator output capacitance C12, turnable resonator outputting inductance L12.C12 in resonant energy output circuit and C11 are connected in parallel, and C12 and C11 are connected between T and T2, and L12 and L11 employing are connected in series afterwards and C11 is connected in parallel, and L12 is connected between T and T1, and L11 is connected between T1 and T2; Multikilowatt electric energy receiver, receives capacitor C 21, resonance receiving coil L21, turnable resonator reception capacitor C 22, turnable resonator receiving inductance L22 and receive frequency control circuit by resonance and forms.Wherein, the C22 in multikilowatt electric energy receiver and C21 are connected in parallel, and C22 and C21 are connected between S1 and S2, and L22 and L21 employing are connected in series afterwards and C21 is connected in parallel, and L22 is connected between S and S1, and L21 is connected between S and S2.
In LC antiresonant circuit, equivalent circuit diagram as shown in Figure 3.If R
1=R '
1+ R
l, parallel circuits resultant admittance
Condition of resonance is:
Solved by formula (1):
Formula (2) is actual resonance circular frequency, and from (2): R
1, R
2must be greater than (or being less than) simultaneously simultaneously
for the necessary condition of parallel resonance, and only there is R
1=R
2time, resonance circular frequency is only
Due to R
2for capacity loss impedance, R
lfor the impedance of inductance coil copper loss, can be similar to constant, and R
1for load reflection equiva lent impedance, R
1loss becomes with load and coupling situation, thereby ω
0always to change.Designed in the present invention frequency controller, frequency controller, by adjusting L12, C12, L22, C22, makes the frequency of the sinusoidal wave power delivery device of multikilowatt and multikilowatt electric energy receiver consistent.
Can adjust the frequency f s of the sinusoidal wave power delivery device of multikilowatt and the frequency f r of multikilowatt electric energy receiver at device for transmitting kilowatt wireless power at moderate distance medium frequency controller.Regulating principle is the fixing wherein frequency of a side, regulates opposite side inductance or electric capacity, makes it identical with fixation side frequency, and both can not adjust simultaneously.Can adjust by frequency controller the frequency f r of multikilowatt electric energy receiver, make it to synchronize with the frequency f s of the sinusoidal wave power delivery device of multikilowatt.In like manner, also can adjust by frequency controller the frequency f s of the sinusoidal wave power delivery device of multikilowatt, make it to synchronize with the frequency f r of multikilowatt electric energy receiver.When resonance output frequency and resonance receive frequency are when inconsistent, can first regulate turnable resonator electric capacity that two frequencies are approached, then regulate turnable resonator inductance to make it consistent.
Turnable resonator output capacitance and turnable resonator receive electric capacity and can be made up of N electric capacity, in the present embodiment, turnable resonator output capacitance C12 is made up of C121, C122, tri-Capacitance parallel connections of C123, and turnable resonator receives capacitor C 22 and is made up of three Capacitance parallel connections such as C221, C222, C223.
Turnable resonator output capacitance is identical with principle and structure that turnable resonator receives capacitance adjustment frequency, regulates turnable resonator output capacitance C12 as example explanation frequency adjustment process take output frequency control circuit, and turnable resonator output capacitance C12 syndeton as shown in Figure 4.Turnable resonator output capacitance C12 is made up of C121, C122, tri-Capacitance parallel connections of C123, and C121, C122, C123 turn on and off switching by K1, K2, K3 respectively.C121 is connected between T and 11, and C122 is connected between T and 12, and C123 is connected between T and 13; K1 be connected in 11 and T2 between, K2 be connected in 12 and T2 between, K3 be connected in 13 and T2 between.Wherein the capacitance of C121 is unit 1, the capacitance of C122 is unit 2, the capacitance of C123 is unit 4, in the time that needs regulate resonance output frequency, only need the connecting and disconnecting state of diverter switch K1, K2, K3 can realize the capacitance that changes C12, the grade of capacitance is 0,1,2,3,4,5,6,7, and then changes the sinusoidal wave power delivery device of multikilowatt frequency.The way that change frequency is held in this power transformation belongs to segment frequence control method, and adjustable scope is relatively large, is conventionally not more than 30%.
The control method of turnable resonator outputting inductance and turnable resonator receiving inductance is similar, turnable resonator outputting inductance and turnable resonator receiving inductance inside are cored, by regulating iron core can realize the change of inductance value with the degree that overlaps of inductance in inductance vertical direction.This inductance variation belongs to continuous regulating frequency method, and the scope of adjusting is less, is conventionally not more than 10%.
As shown in Figure 5, the upper voltage waveform of resonance output winding L11 is high_frequency sine wave, and the upper voltage waveform of the receiving coil of resonance shown in Fig. 6 L21 is also high_frequency sine wave.The voltage waveform same frequency of resonance output winding and resonance receiving coil, amplitude difference.Distance dependent between amplitude and the coil of resonance receiving coil voltage waveform, it is larger that distance more approaches amplitude, and distance is far away, and amplitude is less.
Resonance output winding L11 and resonance receiving coil L21 adopt copper pipe (or copper cash) coiling, for single turn or multiple single turn parallel-connection structure, in resonance output winding L11 and resonance receiving coil L21, single-turn circular coil is of a size of 10cm～45cm, turn-to-turn distance is 0.1-5cm, and resonance output winding L11 and resonance receiving coil L21 are the shapes such as circular, square, polygon; The structure of process simple deformation is within the scope of claim.In device for transmitting kilowatt wireless power at moderate distance, the frequency f s of the sinusoidal wave power delivery device of multikilowatt and the frequency f r scope of multikilowatt electric energy receiver are at 50KHZ-1MHZ, the electric energy power bracket 0-30KW of device for transmitting kilowatt wireless power at moderate distance transmission, space length 5-50cm between resonance output winding and resonance receiving coil.
The electric energy receiving in resonant energy output circuit can use by supply load.If load R is AC load, can be connected to the position of R in Fig. 2; If load R is DC load, must be after AC/DC rectification supply load R.
The distance (after this, be called " coil-span from ") of 5cm to 50cm is set between resonance output winding and resonance receiving coil.Device for transmitting kilowatt wireless power at moderate distance is the device from resonance output winding to resonance receiving coil electric energy transmitting with wireless mode.Because the power grade transmitting is higher, adopt copper pipe coiling.With two coils of copper pipe coiling: a resonance output winding, a resonance receiving coil.
This device, to have a multikilowatt electric energy receiver in device for transmitting kilowatt wireless power at moderate distance as example describes, if there are multiple multikilowatt electric energy receivers, only need to increase frequency sampling plate and regulates and control accordingly.
Frequency controller is made up of frequency sampling plate one, frequency sampling plate two and logic controller, as shown in Figure 7.In the present embodiment, capacitor C 12, C22 are made up of three electric capacity respectively.U1 represents the voltage of L11 both sides, U2 represents the voltage of R both sides, A1 represents entering of turnable resonator outputting inductance, A2 represents moving back of turnable resonator outputting inductance, A3 represents the switch of turnable resonator output capacitance one, A4 represents the switch of turnable resonator output capacitance two, A5 represents the switch of turnable resonator output capacitance three, A6 represents entering of turnable resonator receiving inductance, A7 represents moving back of turnable resonator receiving inductance, A8 represents that turnable resonator receives the switch of electric capacity one, and A9 represents that turnable resonator receives the switch of electric capacity two, and A10 represents that turnable resonator receives the switch of electric capacity three.In figure, sequence number does not define particular location, just the description of function.
Frequency sampling plate one is identical with frequency sampling plate two functions, and its function is for to be converted to square-wave signal by sine wave signal.Frequency sampling plate one has two inputs, two outputs, its input is connected in the two ends of resonance output winding L11, for detection of the voltage U 1 of L11 both sides, its output is connected to logic controller, the frequency f s of the sinusoidal wave power delivery device of logic controller metering multikilowatt.Frequency sampling plate two has two inputs, two outputs, and its input is connected in the two ends of load R, and for detection of the voltage U 2 of R both sides, its output is connected to logic controller, the frequency f r of the sinusoidal wave electric energy receiver of logic controller metering multikilowatt.Describe as an example of frequency sampling plate one example, as shown in Figure 8, input is 1 and 2, and output is 3 and 4, and the voltage U 1 at resonance output winding L11 two ends is connected to 1 and 2, and output 3 and 4 is connected to logic controller.U1, after reduction voltage circuit, is connected to freq converting circuit, and the function of freq converting circuit is that the high-frequency sine wave signal U1 after step-down is converted to high-frequency square-wave signal; High-frequency square-wave signal passes through frequency dividing circuit again, and frequency dividing circuit will become the square-wave signal of lower frequency after high-frequency square-wave signal frequency reducing, facilitates PLC to gather; The square-wave signal of lower frequency, after signal isolation, is connected to output 3 and 4.The user of frequency dividing circuit logic controller carry out the signals collecting of frequency.
The parameter term of reference of device in frequency sampling plate:
C1 capacitance scope is 10nf-4.7uf, and 100nf is selected in this enforcement;
C2 capacitance scope is 10pf-470pf, and 68pf is selected in this enforcement;
C3 capacitance scope is 10pf-220pf, and 33pf is selected in this enforcement;
R1 Standard resistance range is 100 Ω-500 Ω, and 250 Ω are selected in this enforcement;
R2 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement;
R3 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement;
R4 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement;
R5 Standard resistance range is 47 Ω-470 Ω, and 100 Ω are selected in this enforcement;
R6 Standard resistance range is 470 Ω-47K Ω, and 2.2K Ω is selected in this enforcement;
R7 Standard resistance range is 470 Ω-47K Ω, and 2.2K Ω is selected in this enforcement;
R8 Standard resistance range is 100K Ω-2M Ω, and 680K Ω is selected in this enforcement;
R9 Standard resistance range is 100 Ω-8.2K Ω, and 1.1K Ω is selected in this enforcement;
R10 Standard resistance range is 1K Ω-20K Ω, and 4.7K Ω is selected in this enforcement;
R11 Standard resistance range is 330 Ω-4.7K Ω, and 1K Ω is selected in this enforcement;
R12 Standard resistance range is 330 Ω-4.7K Ω, and 1K Ω is selected in this enforcement;
R13 Standard resistance range is 82K Ω-1M Ω, and 470K Ω is selected in this enforcement;
R14 Standard resistance range is 100 Ω-4.7K Ω, and 470 Ω are selected in this enforcement;
D4-D7 is diode, and IN4148 is selected in this enforcement.
Logic controller regulates the inductance value of turnable resonator outputting inductance L12 by the relative position of iron core and turnable resonator outputting inductance in A1 and A2 control turnable resonator outputting inductance, select the connecting and disconnecting of corresponding capacitance switch to regulate the capacitance of turnable resonator output capacitance C12 by A3, A4, A5, thereby change the frequency f s of the sinusoidal wave power delivery device of multikilowatt by the adjusting of L12, C12; Regulate the inductance value of turnable resonator receiving inductance L22 by the relative position of iron core and turnable resonator receiving inductance in A6 and A7 control turnable resonator receiving inductance, select the connecting and disconnecting of corresponding capacitance switch to regulate turnable resonator to receive the capacitance of capacitor C 22 by A8, A9, A10, thereby change the frequency f r of the sinusoidal wave electric energy receiver of multikilowatt by the adjusting of L22, C22.
Logic controller is by the adjustment of the frequency f r of the frequency f s to the sinusoidal wave power delivery device of multikilowatt and the sinusoidal wave electric energy receiver of multikilowatt, frequency f s and fr are reached unanimity, thereby make wireless electric energy transmission device both sides reach resonance frequency state, realize the optimum transmission of radio energy.
When frequency adjustment, signal generator needs in place in circuit, and while having a multikilowatt electric energy receiver, signal generator wiring is as Fig. 9.Signal generator one is connected in the two ends of L11 in the sinusoidal wave power delivery device of multikilowatt, and signal generator two is connected between S1 and S2.
The frequency adjustment logic flow schematic diagram of logic controller as shown in figure 10.
The first step: frequency preconditioning is prepared
Second step: frequency logic judgement
The 3rd step: the adjustable device course of action of frequency
The 4th step: warning processing procedure
The 5th step: frequency adjustment finishes
Above five steps is the flow process signal of frequency adjustment logic flow, and each step comprises different movement contents, and partial content is as follows:
In the preconditioning of first step frequency is prepared,
1, carry out procedure Selection by foreign frequency preconditioning button.
2, main circuit power is disconnected.
3, signal generator is accessed in loop.
4, the changing cell that affects frequency is adjusted to suitable position.
5, set resonance permissible variation frequency range and electric capacity threshold values.
6, two frequencies in acquisition circuit, calculated rate error.
In the judgement of second step frequency logic,
1, in the time that the difference of two frequencies is larger, regulate coupling by turnable resonator electric capacity.
2, when the difference of two frequencies hour, regulate coupling by turnable resonator inductance.
3,, in the time that the difference of two frequencies is less than resonance permissible variation, think that two frequencies are resonance condition.
4, while having the frequency that is greater than two, can first regulate related device to make outlet side frequency be less than any one frequency of receiver side, and then regulate the frequency of receiver side, make the frequency error of both sides in the scope of resonance error permission.Also can adopt contrary method or adopt to the close control method of intermediate frequency value.This link object is to formulate take which frequency as regulating foundation, thereby determines the direction of the corresponding adjusting of frequency adjustable device.
In the adjustable device course of action of the 3rd synchronizing frequency,
1, the adjusting to turnable resonator electric capacity: by the difference of two frequencies and the multiple relation of electric capacity threshold values, corresponding electric capacity is regulated; Regulative mode is to select corresponding capacitance switch to turn-off or ON Action.
2, the adjusting to turnable resonator inductance: when the difference of two frequencies is less than electric capacity threshold values, while being greater than permissible variation again, turnable resonator inductance is regulated simultaneously; Control method is that the relative vertical position of iron core in inductance is entered or moved back.
3, adjustable device can be automatic regulative mode or manual adjustments mode.
In the 4th step warning processing procedure,
1, the number of establishing capacitance switch is N, when the difference of two frequencies is greater than (2 of electric capacity threshold values
n-1), times time, frequency-splitting is too large, frequency overload alarm.
2, in the time having multiple receiver, if the frequency of outlet side cannot be adjusted to while being less than any one receiver side frequency, frequency overload alarm.
3, in the time that moving back of controllable impedance is spacing and enter spacing action, frequency overload alarm.
4, other are reported to the police and process.
Adjust in terminal procedure at the 5th synchronizing frequency,
Conventionally enter frequency adjustment terminal procedure while being less than permissible variation after frequency alarm or frequency adjustment when having.In the time having warning, need to manually adjust device, make frequency error be less than permissible error; The deviation that is less than permission when the frequency error after frequency adjustment thinks, radio energy, in resonance condition, can be transmitted efficiently in both sides.
In frequency adjustment logic flow, the above functional descriptions that is described as, does not have the strict step content that indicates, and the particular content of step can regulate as the case may be.
Frequency is adjusted flow process embodiment one: to only have a multikilowatt electric energy receiver to adjust flow process as embodiment illustrates frequency in this device, as shown in figure 11.The frequency of supposing resonant energy output circuit is fs, the frequency of multikilowatt electric energy receiver is fr, K11 (also referred to as output capacitance one switch), K12 (also referred to as output capacitance two switches), K13 (also referred to as output capacitance three switches) are the capacitance switch of C12 (also referred to as output capacitance), and K21 (also referred to as receiving electric capacity one switch), K22 (also referred to as receiving electric capacity two switches), K23 (also referred to as receiving electric capacity three switches) are the capacitance switch of C22 (also referred to as receiving electric capacity).The effect of frequency controller is to make fr substantially equal fs, establishes Δ f=|fr-fs|, and F1, for setting permissible error, thinks when Δ f≤F1 that both sides frequency reaches resonance condition.F2 is for setting electric capacity threshold values, the changing value of frequency while referring to 1 unit of the every variation of switch combination logic of electric capacity.
In Figure 11, select after frequency preconditioning, current source, SW1 and SW2 all can not work, now signal generator 1 and signal generator 2 start to connect and work, again K11, K12, K13, K21, K22, K23 are all disconnected, then L12 (also referred to as outputting inductance) and the inner adjustable iron core of L22 (also referred to as receiving inductance) are all moved to coil outside, now, the frequency of both sides is peak; The highest frequency of both sides is gathered by logic controller through frequency collection plate, first carries out frequency ratio and judge the frequency of which side high, and the frequency higher position of which side regulates the position of iron core in the switch of electric capacity of which side or inductance.Suppose that fs is high, if Δ f≤F1 thinks and do not have deviation, end adjusting; If when Δ f > F2, calculate how many times that Δ f is F2, round numbers, establishing multiple is N1, in the time that N1 is 4,5,6,7, K13 closure, K12 closure in the time that N1 is 2,3,6,7, K11 closure in the time that N1 is 1,3,5,7, in the time that N1 is greater than 7, frequency exceedes adjustable range and reports to the police; If F2 > Δ f > is F1, regulate the turnable resonator outputting inductance of fs side to carry out frequency adjustment, return frequency comparison after regulating, when iron core in inductance exceedes spacing (enter spacing and move back spacing) alarm.Suppose that fr is high, if Δ f≤F1 thinks and do not have deviation, end adjusting; If when Δ f > F2, calculate how many times that Δ f is F2, round numbers, establishing multiple is N2, in the time that N2 is 4,5,6,7, K23 closure, K22 closure in the time that N2 is 2,3,6,7, K21 closure in the time that N2 is 1,3,5,7, in the time that N2 is greater than 7, frequency exceedes adjustable range and reports to the police; If F2 > Δ f > is F1, regulate the turnable resonator receiving inductance of fr side to carry out frequency adjustment, return frequency comparison after regulating, when iron core in inductance exceedes spacing (enter spacing and move back spacing) alarm.
Frequency is adjusted flow process embodiment two: be that embodiment illustrates frequency adjustment flow process when this device has n multikilowatt electric energy receiver, as shown in figure 12.Suppose that the frequency in resonant energy output circuit is fs, have n its frequency of multikilowatt electric energy receiver be respectively fr1, fr2 ..., frn, suppose the capacitance switch that Ks1, Ks2, Ks3 are C12; Suppose that Kr11, Kr12, Kr13 are the capacitance switch of adjustable reception resonant capacitance in the 1st multikilowatt electric energy receiver, Krn1, Krn2, Knr3 are the capacitance switch of adjustable reception resonant capacitance in n multikilowatt electric energy receiver simultaneously.Ls2 is electric energy receiver side turnable resonator outputting inductance, and Lrn2 is n turnable resonator receiving inductance of electric energy receiver side, and resonant energy output electric energy receiver quantity is n, and its structure is identical, and its frequency phase-difference is very little.The effect of frequency controller makes frn substantially equal fs, establishes Δ fn=|frn-fs|, and F1, for setting permissible error, thinks when Δ fn≤F1 that both sides frequency reaches resonance condition.F2 is for setting electric capacity threshold values, the changing value of frequency while referring to 1 unit of the every variation of switch combination logic of electric capacity.
In Figure 12, select after frequency preconditioning, current source, SW1 and SW2 all can not work, now signal generator 1 and signal generator 2 start to connect and work, again by Ks1, Ks2, Ks3, Kr11, Kr12, Kr13 ..., Krn1, Krn2, Krn3 all disconnect, then Ls2 (electric energy outlet side controllable impedance) and the inner iron core of Lrn2 (n controllable impedance of electric energy receiver side) are all moved to coil outside, now the frequency of both sides is peak.All frequencies are gathered by logic controller through frequency collection plate, first regulating Ks1, Ks2, Ks3 and Ls2 to make fs be less than any one frn (regulates after fs, if there is frn to be greater than fs, frequency exceedes adjustable range and reports to the police), it is poor then n electric energy receiver side frequency f rn and fs to be done, i.e. Δ fn=|frn-fs|, describe as an example of n electric energy receiver frn example, if Δ fn≤F1, thinks and do not have deviation, finish to regulate; If when Δ fn > F2, calculate how many times that Δ fn is F2, round numbers, if multiple is Nn, in the time that Nn is 4,5,6,7, Kn3 closure, Kn2 closure in the time that Nn is 2,3,6,7, Kn1 closure in the time that Nn is 1,3,5,7, in the time that Nn is greater than 7, frequency exceedes adjustable range and reports to the police; If F2 > Δ fn > is F1, regulate the interior iron core of the turnable resonator inductance position of n electric energy receiver to carry out frequency adjustment, return frequency comparison after regulating, when iron core position in inductance exceedes spacing (enter spacing and move back spacing) alarm.
Logic controller, as core cell, carries out program composition according to frequency adjustment flow process by PLC, realizes frequency adjustment, and below explanation is take a multikilowatt electric energy receiver as example.PLC comprises input unit and output unit.Input unit comprises frequency collection, capacitance switch hand push button, and controllable impedance limit switch and manually automatically switching, wherein each capacitance switch arranges a hand push button, and each controllable impedance has into spacing and move back limit switch; Output unit comprise capacitance switch open turn-off control, the advance and retreat control of controllable impedance and report to the police output, wherein, each capacitance switch is controlled separately, each controllable impedance is provided with into control and moves back control, in detail as shown in Figure 13,14,15.Automatic/hand button is used for switching frequency regulative mode.In the time being input as 1, be manual mode, by external capacitive and inductance hand push button, frequency regulated.In the time being input as 0, be auto state, logic controller automatically adjusts according to program circuit.
The specific embodiment of logic controller: take this device with a multikilowatt electric energy receiver as example, show that the input signal of logic controller is connected with output signal, as shown in Figure 13, Figure 14, Figure 15.If there are multiple multikilowatt electric energy receivers, it can the present embodiment be according to carrying out similar expansion that input signal is connected with output signal.
In Figure 13, input signal: IN1 represents that output frequency counting fs enters PLC by X0 passage and carries out data acquisition; IN2 represents that output frequency counting fr enters PLC by X1 passage and carries out data acquisition; IN3 represents frequency preconditioning selection button, connects X2 terminal; IN4 represents automatic/hand selection button, is connected in X3 terminal; IN5 represents manual frequency-tracking, is connected in X4 terminal; IN6 represents the switch manual adjustments button of turnable resonator output capacitance one, is connected in X5 terminal; IN7 represents the switch manual adjustments button of turnable resonator output capacitance two, X6 terminal; IN8 represents the switch manual adjustments button of turnable resonator output capacitance three, is connected in X7 terminal.Output signal: OUT1 represents by Y0 turnable resonator outputting inductance to enter to control, OUT2 represents by Y1 the capable control of the setback of turnable resonator outputting inductance, OUT3 represent by Y2 to turnable resonator receiving inductance enter to control, OUT4 represents by Y3 the capable control of the setback of turnable resonator receiving inductance.
In Figure 14, what input signal: IN9 represented turnable resonator outputting inductance enters manual adjustments button, connects X10 terminal; What IN10 represented turnable resonator outputting inductance moves back manual adjustments button, connects X11 terminal; IN11 represents that turnable resonator receives the switch manual adjustments button of electric capacity one, connects X12 terminal; IN12 represents that turnable resonator receives the switch manual adjustments button of electric capacity two, connects X13 terminal; IN13 represents that turnable resonator receives the switch manual adjustments button of electric capacity three, connects X14 terminal; What IN14 represented turnable resonator receiving inductance enters manual adjustments button, connects X15 terminal, and what IN15 represented turnable resonator receiving inductance moves back manual adjustments button, connects X16 terminal.Output signal: OUT5 represents, by terminal Y10, the switch of turnable resonator output capacitance one is switched on and off to control, OUT6 represents, by terminal Y11, the switch of turnable resonator output capacitance two is switched on and off to control, OUT7 represents, by terminal Y12, the switch of turnable resonator output capacitance three is switched on and off to control, OUT8 represents that by terminal Y13, turnable resonator reception electric capacity one being driven into row switches on and off control, OUT9 represents that by terminal Y14, turnable resonator reception electric capacity two being driven into row switches on and off control, OUT10 represents that by terminal Y15, turnable resonator reception electric capacity three being driven into row switches on and off control.
In Figure 15, it is spacing that IN16 represents that turnable resonator outputting inductance enters, and is connected in X20 terminal; It is spacing that IN17 represents that turnable resonator outputting inductance moves back, and is connected in X21 terminal; It is spacing that IN18 represents that turnable resonator receiving inductance enters, and is connected in X22 terminal; It is spacing that IN19 represents that turnable resonator receiving inductance moves back, and is connected in X23 terminal.
In an embodiment, major parameter term of reference:
Switch element SW1 and SW2, can be IGBT or POWER MOSFET, and each switch element can be only single, also can adopt many parallel connections.It is IRF460 that model is selected in this enforcement, 24 parallel connections;
Resonance output capacitance C11, can be single can be also many connection in series-parallel, parameter area 0.01 μ F-10 μ F, 0.66 μ F is selected in this enforcement, and withstand voltage is 600V;
Turnable resonator output capacitance C12, parameter area 0.01 μ F-5 μ F, 0.33 μ F is selected in this enforcement, and withstand voltage is 600V;
Resonance outputting inductance L11, parameter area 0.01 μ H-20 μ H, 0.3 μ H is selected in this enforcement;
Turnable resonator outputting inductance L12, parameter area 0.01 μ H-20 μ H, 0.2 μ H is selected in this enforcement;
Resonance receives capacitor C 21, and can be single can be also many connection in series-parallel, parameter area 0.01 μ F-10 μ F, and 0.33 μ F is selected in this enforcement, and withstand voltage is 600V;
Turnable resonator receives capacitor C 22, parameter area 0.01 μ F-5 μ F, and 0.33 μ F is selected in this enforcement, and withstand voltage is 600V;
Resonance receiving inductance L21, parameter area 0.01 μ H-20 μ H, 0.6 μ H is selected in this enforcement;
Turnable resonator receiving inductance L22, parameter area 0.01 μ H-20 μ H, 0.3 μ H is selected in this enforcement;
Application example 1
The copper pipe coiling of diameter phi 10 for resonance output winding and resonance receiving coil in this example, coil is square, and resonance output winding and resonance receiving coil are a single-turn circular coil, and the coil length of side is 25cm, coil-span is from being 20cm, and two coil planes are parallel and concentric.Take 8 200W bulbs as load.In this example, between power converting circuit output PQ, voltage is 150V, and when resonance output winding frequency is 270KHz, bulb is normally luminous, and through-put power reaches 1.6KW.
Application example 2
The copper pipe coiling of diameter phi 10 for resonance output winding and resonance receiving coil in this example, coil is regular hexagon, resonance output winding is 2 single-turn circular coil parallel-connection structures, resonance receiving coil is 2 single-turn circular coil parallel-connection structures, turn-to-turn distance is 0.3cm, the coil length of side is 18cm, and coil-span is from being 24cm, and two coil planes are parallel and concentric.Take 12 200W bulbs as load.In this example, between power converting circuit output PQ, voltage is 150V, and when resonance output winding frequency is 600KHz, bulb is normally luminous, and through-put power reaches 2.4KW.
Application example 3
The copper pipe coiling of diameter phi 10 for resonance output winding and resonance receiving coil in this example, coil is circular, resonance output winding and resonance receiving coil be as shown in figure 16: resonance output winding is 5 single-turn circular coil parallel-connection structures, and resonance receiving coil is 1 single-turn circular coil.Resonance output winding diameter is 26cm, and turn-to-turn is apart from being 0.4cm, and resonance receiving coil diameter is 27cm, and coil-span is from being 30cm, and two coil planes are parallel and concentric.Take 32 200W bulbs as load.In this example, between power converting circuit output PQ, voltage is 190V, when resonance output winding frequency is 300KHz, bulb brightness is inadequate, adjust after turnable resonator receiving inductance by frequency controller, between power converting circuit output PQ, voltage is 190V, and bulb is normally luminous, and wireless transmitted power is 6.4KW.
Application example 4
The copper pipe coiling of diameter phi 10 for resonance output winding and resonance receiving coil in this example, coil is circular, and resonance output winding is 6 single-turn circular coil parallel-connection structures, and resonance receiving coil is 1 single-turn circular coil.Resonance output winding diameter is 24.5cm, and turn-to-turn is apart from being 0.4cm, and resonance receiving coil diameter is 25.5cm, and coil-span is from being 29cm, and two coil planes are parallel and concentric.Take 35 200W bulbs as load.In this example, between power converting circuit output PQ, voltage is 190V, when resonance output winding frequency is 300KHz, bulb brightness is inadequate, adjust after turnable resonator output capacitance and turnable resonator outputting inductance by frequency controller, bulb is normally luminous, and electric energy received power reaches 7KW.Now increase again a resonance receiving coil two apart from resonance output winding 35cm place, after receive frequency control circuit is adjusted turnable resonator receiving inductance and turnable resonator output capacitance, lighting 6 bulbs.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.This area those skilled in the art are appreciated that the spirit and scope of the present invention in the case of not deviating from claims definition, can in form and details, make various modifications.
Claims (5)
1. a device for transmitting kilowatt wireless power at moderate distance, it comprises the sinusoidal wave power delivery device of multikilowatt, multikilowatt electric energy receiver and frequency controller, wherein the sinusoidal wave power delivery device of multikilowatt receives electric energy from electrical network, to multikilowatt electric energy receiver wireless transmission electric energy, between the sinusoidal wave power delivery device of multikilowatt and multikilowatt electric energy receiver, be to contact by mutual inductance; The magnetic field that multikilowatt electric energy receiver produces by the sinusoidal wave power delivery device of multikilowatt obtains electric energy, for follow-up load; Frequency controller can gather the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver, and according to regulating flow process to regulate the sinusoidal wave power delivery device of multikilowatt or multikilowatt electric energy receiver, thereby make the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver reach resonance state, make described device for transmitting kilowatt wireless power at moderate distance reach optimum delivery of electrical energy;
Wherein, moderate distance scope is the distance between 5cm to 50cm; The sinusoidal wave power delivery device of multikilowatt is made up of current source, resonant energy supplementary circuitry and resonant energy output circuit; Resonant energy supplementary circuitry is made up of switch element one (SW1) and switch element two (SW2), and frequency in accordance with regulations and phase place supplement electric energy to resonant energy output circuit; Resonant energy output circuit is made up of resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, and resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance form resonator system; This resonator system is used for setting the sinusoidal wave power delivery device of multikilowatt frequency, and realize energy exchanges with magnetic field and electric field form respectively in resonance output capacitance, resonance output winding, turnable resonator output capacitance, turnable resonator outputting inductance, in resonance output winding, produce the resonance current of assigned frequency, and resonance current in resonance output winding is formed can be at the alternating magnetic field of delivery of electrical energy scope inner conversion;
Multikilowatt electric energy receiver, it is for receiving through the be coupled magnetic field energy of the alternating magnetic field of coming of resonance output winding; Multikilowatt electric energy receiver receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity and turnable resonator receiving inductance by resonance and forms, and resonance receives electric capacity, resonance receiving coil, turnable resonator reception electric capacity, turnable resonator receiving inductance for setting the frequency of multikilowatt electric energy receiver;
Frequency controller is used for adjusting the frequency of the sinusoidal wave power delivery device of multikilowatt and the frequency of multikilowatt electric energy receiver, make the frequency of the sinusoidal wave power delivery device of multikilowatt identical with the frequency of multikilowatt electric energy receiver, make multikilowatt electric energy receiver in regulation space, receive optimum resonant energy.
2. device for transmitting kilowatt wireless power at moderate distance according to claim 1, it is characterized in that, frequency controller, by regulating turnable resonator output capacitance or turnable resonator outputting inductance to adjust the sinusoidal wave power delivery device of multikilowatt frequency, makes the frequency of the sinusoidal wave power delivery device of multikilowatt and the Frequency Synchronization of multikilowatt electric energy receiver.
3. device for transmitting kilowatt wireless power at moderate distance according to claim 1, is characterized in that, frequency controller is determined output frequency size by detecting resonance output winding both end voltage waveform.
4. device for transmitting kilowatt wireless power at moderate distance according to claim 1, it is characterized in that, frequency controller, by regulating turnable resonator reception electric capacity or turnable resonator receiving inductance to adjust multikilowatt electric energy receiver frequency, makes the frequency of multikilowatt electric energy receiver and the Frequency Synchronization of the sinusoidal wave power delivery device of multikilowatt.
5. device for transmitting kilowatt wireless power at moderate distance according to claim 1, is characterized in that, frequency controller, by detecting the voltage waveform in load, is determined the size of receive frequency.
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| CN103346625B (en) * | 2013-07-31 | 2015-05-20 | 哈尔滨工业大学 | Multi-load wireless energy transmission device with auxiliary terminal inductance frequency selection |
| CN103346624B (en) * | 2013-07-31 | 2015-08-19 | 哈尔滨工业大学 | The multi-load wireless energy transform device that can automatically control |
| CN103346626B (en) * | 2013-07-31 | 2015-08-19 | 哈尔滨工业大学 | The multi-load wireless energy transform device of secondary end electric capacity frequency-selecting |
| CN206353727U (en) * | 2016-03-04 | 2017-07-25 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power coil coupling model and point-to-point wireless power supply system |
| CN106230126A (en) * | 2016-03-04 | 2016-12-14 | 中惠创智无线供电技术有限公司 | Point-to-point wireless power coil coupling model and point-to-point wireless power supply system |
| CZ308445B6 (en) * | 2017-09-29 | 2020-08-26 | Západočeská Univerzita V Plzni | Device for contactless transmission of electrical energy to a rotating part |
| CN111799900A (en) * | 2020-07-06 | 2020-10-20 | 桂林电子科技大学 | Efficient remote wireless power transmission scheme |
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Effective date of registration: 20180115 Address after: 215615 Jiangsu Province, Zhangjiagang City Tangqiao town branch road, Dongcheng Technology Park A building two floor West Patentee after: SUZHOU MINGYANG INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 071000, General Factory Building No. 2, Torch Industrial Park, No. 677 Jin Mo street, Hebei, Baoding, 1-01 Patentee before: HEBEI CHANGFU ELECTRIC CO.,LTD. |
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Effective date of registration: 20230427 Address after: 071051 general workshop 1-01, No.2, Torch Industrial Park, 677 Jinxiu street, Baoding City, Hebei Province Patentee after: HEBEI CHANGFU ELECTRIC CO.,LTD. Address before: 215615 West, 2nd floor, building a, Dongcheng science and Technology Pioneer Park, Kechuang Road, Tangqiao town, Zhangjiagang City, Jiangsu Province Patentee before: SUZHOU MINGYANG INTELLIGENT TECHNOLOGY Co.,Ltd. |
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