CN106803722A - Power inverter - Google Patents
Power inverter Download PDFInfo
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- CN106803722A CN106803722A CN201510844089.4A CN201510844089A CN106803722A CN 106803722 A CN106803722 A CN 106803722A CN 201510844089 A CN201510844089 A CN 201510844089A CN 106803722 A CN106803722 A CN 106803722A
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- switch element
- output signal
- control unit
- signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Inverter Devices (AREA)
Abstract
The power inverter of embodiments of the present invention includes：First switch element and second switch element, the second switch element are connected via the first tie point with the first switch element；First rectifier cell and the second rectifier cell, second rectifier cell are connected via the second tie point with first rectifier cell；Capacitor, is arranged in parallel with first rectifier cell and the second rectifier cell；Output voltage test section, is arranged in parallel with the capacitor；AC power, between first tie point and second tie point, connects with current detecting part and inductor；Polarity judging part, judges the polarity of the AC power；Multiply calculation portion, the output signal of the output signal of the polarity judging part and the current detecting part is multiplied into calculation, output rectification is the signal of positive or negative polarity；And control unit, according to the signal being rectified, drive the first switch element and second switch element.
Description
Technical field
The present invention relates to include that totem pole type (totem pole) power rate improves the power inverter of circuit.
Background technology
Power inverter is that the alternating voltage obtained from AC power is converted into different straight of voltage
Stream voltage, and to the device of load supply electric power.Generally, from AC power supply electric power when by two poles
Pipe, as bidirectional triode thyristor semiconductor element control in the case of, such as from AC power observation if into
Include the electric current flowing of higher hamonic wave for non-linear load and from the alternating current of AC power supply.
The angle of flow of the alternating current including the higher hamonic wave narrows and power rate deteriorates, and increases as inefficient power
The reason for.Therefore, by setting alternating voltage as the sinuous AC current waveform of same-phase,
So as to the angle of flow expands and power rate optimization, there is the effect for suppressing higher harmonic component.By the alternating current
It is controlled to sinuous circuit and is referred to as power rate improvement circuit.
As realizing that power rate improves the composition of circuit, exist booster type power rate shown in Fig. 9 improve circuit,
Totem pole type power rate as shown in Figure 10 improves circuit etc..
Booster type power rate shown in Fig. 9 improves circuit by alternating voltage by D1, D2, D3, D4
The diode bridge that this four diodes are constituted is converted to the pulsating volage to positive polarity rectification, based on arteries and veins
Dynamic voltage turns on switch element S1, electric current of the flowing based on pulsating volage.
The solid line of Fig. 9 and the switch element S1 that AC power Vac shown in phantom is the positive half period lead
Current path when logical, non-conduction.AC power Vac is timing, and alternating current is passed through when S1 is turned on
Source Vac → diode D2 → inductor L1 → switch element S1 → detection resistance Rs → diode D3
The path streaming current of → AC power Vac.Here, to inductor L1 applied voltages, flowing through sense
Answering the electric current of device L1 increases, and puts aside energy.Then, if switch on (Open く) switch element S1,
Then during switch element S1 is on, in order to discharge the energy of inductor L1 savings, pass through
AC power Vac → diode D2 → inductor L1 → diode D5 → capacitor C1 → detection electricity
Hinder the path streaming current of Rs → diode D3 → AC power Vac.
Action more than, the energy put aside in inductor L1 is released in outlet side, according to opening
The ON time for closing the switch of element S1 carries out boost action, while putting aside electric charge to capacitor C1,
Make alternating current close to sinusoidal wave shape.
The booster type power rate improve circuit using the minus side of capacitor C1 as circuit reference potential, base
Detection is connected between quasi- current potential and diode D3 improves the resistance of the electric current flowed in circuit in power rate
Rs.Then, by the electric current of the conduction/non-conduction with switch element S1, based on detection resistance
The voltage that Rs is produced, controls ac flow.Now, detection resistance Rs flowing electric current due to from
Reference potential observation flows to diode D3, therefore as negative polarity full-wave commutating voltage.
As the other structures for realizing power rate improvement circuit, there is the totem pole type power rate shown in Figure 10
Improve circuit.Additionally, Figure 10 show the conducting of the switch element S1 of positive half period, it is non-conduction when
Current path.Totem pole type power rate improves circuit and above-mentioned booster type power rate is improved four two of circuit
Two in pole pipe are replaced into switch element S1 and switch element S2, will be configured at diode bridge
Inductor (inductor) L1 of the output section of DB is configured to be series at AC power Vac and switch
Between element S1, S2 tie point.
In the totem pole type power rate improves circuit, examined in the same manner as above-mentioned booster type power rate improvement circuit
The electric current of flowing, polarity of voltage controlling switch element S1 or switch according to AC power in slowdown monitoring circuit
The conducting of element S2, non-conduction period.Specifically, the voltage of AC power is in the positive half period
Turn on switch element S1, non-conduction action, turn on switch element S2 in the negative half period, non-
Turn-on action.
AC power Vac is timing, if turn-on switch component S1, by AC power Vac
The path streaming current of → inductor L1 → switch element S1 → diode D1 → AC power Vac.
Here, to inductor L1 applied voltages, the electric current for flowing through inductor L1 increases, and puts aside energy.
Then, ON switch element S1, then by AC power Vac → inductor L1 → switch unit
The path of part S2 (via parasitic diode) → capacitor C1 → diode D1 → AC power Vac
Streaming current.Here, the energy in inductor L1 is put aside in outlet side release, according to switch element
The ON time of the switch of S1 carries out boost action, to capacitor C1 accumulated charges, while making exchange
Electric current is close to sinusoidal wave shape.
So, booster type power rate improves circuit, totem pole type power rate and improves circuit all with same principle
Action, but also have difference.In booster type power rate improves circuit, with a resistance detecting circuit
The continuous electric current of flowing, ac flow is controlled based on voltage signal.
On the other hand, during totem pole type power rate improves circuit, also need to grind for continuously detecting electric current
Study carefully.For example, in the case that resistance Rs is set between switch element S1 and reference potential, in switch
Due to being produced in resistance Rs streaming currents, therefore the product of the magnitude of current and resistance value during element S1 conductings
Raw voltage.But, switch element S1 is in non-conduction period in resistance Rs not streaming currents.Therefore,
The detection electric current of resistance Rs cannot be carried out using.
Similarly, the source terminal of switch element S2 and inductor L1 and switch element S1
Resistance Rt is set between tie point, and detection flows through the electric current of switch element S2, then only retains switch unit
The detection of the electric current that part S2 flows during having turned on.Additionally, the electricity that resistance Rs and resistance Rt is produced
Pressure benchmark is different.
In the prior art, it is related to describe and can pass through in the control of totem pole type power rate improvement circuit
The circuit of resistance detection electric current is constituted.Figure 11 and Figure 12 show above-mentioned DC converter circuit figure.
As connection series connection two switch elements 13,16 and be series at two switch elements 13,
The structure of the energy circuit of 16 current detecting resistance 14,17.Then, as shown in figure 12,
Beyond being configured to current detecting that place is connected in series to two switch elements 13,16 with resistance 14,17,
Two control circuits of circuit 15 and 18 are also set, and the control circuit 15 and 18 is configured to
R-S triggers 31, reset signal form circuit 32, setting signal generator 33, triangular wave oscillation
Device 35 etc..
But, it is of the prior art control circuit 15,18 switch element 16 reference potential with open
The reference potential for closing element 13 is different.Therefore, it is necessary to set the current detecting for constituting control circuit 15
With resistance 14, R-S triggers 31, reset signal formed circuit 32, setting signal generator 33 with
And the current detecting electricity consumption of the reference potential and composition control circuit 18 of the grade of triangular wave oscillator 35
Resistance 17, R-S triggers 31, reset signal forms the base of circuit 32, setting signal generator 33 etc.
Quasi- current potential the two reference potentials.Therefore, have the shortcomings that to cause circuit to constitute complexity.Additionally, two
Individual control circuit must be made up of discrete elements, have the shortcomings that circuit scale becomes big.
The content of the invention
The present invention can be controlled its object is to provide in order to solve the above problems with a reference potential
The power inverter of switch element.
The power inverter of embodiments of the present invention includes：First switch element and second switch unit
Part, the second switch element is connected via the first tie point with the first switch element；First is whole
Fluid element and the second rectifier cell, second rectifier cell are whole with described first via the second tie point
Fluid element is connected；Capacitor, is arranged in parallel with first rectifier cell and the second rectifier cell；
Output voltage test section, is arranged in parallel with the capacitor；AC power, in first tie point
And second tie point between, connected with current detecting part and inductor；Polarity judging part, judges
The polarity of the AC power；Multiply calculation portion, by the output signal and the electric current of the polarity judging part
The output signal of test section multiplies calculation, and output rectification is the signal of positive or negative polarity；And control unit, root
According to the signal being rectified, the first switch element and second switch element are driven.
Invention effect
Power inverter of the invention, improves circuit equal by generation and booster type power rate
Current detection signal, so as to improve circuit control circuit due to booster type power rate can be diverted, so
The drive signal of first switch element and second switch element can be generated with a reference potential, and
Simple and small-sized control circuit can be realized.
Brief description of the drawings
Fig. 1 shows that totem pole type (totem pole) power rate improves the overall structure of circuit.
Fig. 2 shows the detailed construction of polarity judging part.
Fig. 3 shows the detailed construction of current detecting part.
Fig. 4 shows to multiply the detailed construction in calculation portion.
Fig. 5 shows the structure of control unit.
The structure of control unit when Fig. 6 shows to implement time rectification.
Fig. 7 shows the structure of output voltage test section.
Fig. 8 shows that totem pole type power rate improves each several part action waveforms of circuit.
Fig. 9 shows that booster type power rate improves the circuit structure and operating principle of circuit.
Figure 10 shows that totem pole type power rate improves the circuit structure and operating principle of circuit.
Figure 11 shows that the above-mentioned totem pole type power rate of prior art improves the structure of the control circuit of circuit.
Figure 12 shows that the above-mentioned totem pole type power rate of prior art improves the detailed of the control circuit of circuit
Structure.
Specific embodiment
(overall description)
It is described with reference to embodiments of the present invention.
Fig. 1 shows the schematic configuration of power inverter.Power inverter of the invention is via first
Tie point 16 connects be made up of MOSFET (Metal-Oxide Semiconductor field-effect transistor)
One switch element 8 and second switch element 9.Additionally, being connected by two poles via the second tie point 17
The first rectifier cell 10 and the second rectifier cell 11 that pipe is constituted.Additionally, possessing relative to above-mentioned
First rectifier cell 10 and the second rectifier cell 11 are connected and the capacitor 13 of parallel connection and output
Voltage detection department 12.
Here, between the tie point 17 of above-mentioned first tie point 16 and second by AC power 0,
Current detecting part 3 and inductor 7 are connected and constitute energy circuit.
The totem pole type power rate improves the control circuit of circuit by judging the polarity of above-mentioned AC power 0
Polarity judging part 4, multiply calculation portion 5 and control unit 6 is constituted.
Here, above-mentioned polarity judging part 4 is the module of the polarity for judging above-mentioned AC power 0, and with
Two terminals 1 and 2 of above-mentioned AC power 0 are connected.Two signals of above-mentioned polarity judging part 4
Line connection is above-mentioned to multiply calculation portion 5 and above-mentioned control unit 6.Here, it is above-mentioned multiply calculation portion 5 be also connected to it is above-mentioned
Current detecting part 3.Additionally, above-mentioned control unit 6 is connected to two from above-mentioned polarity judging part 4
Holding wire and carry out the holding wire in involution calculation portion 5.Then, outlet side is connected to above-mentioned first and opens
Close element 8 and second switch element 9.
(on polarity judging part 4)
The polarity of AC power 0 is judged that signal is insulated with AC power 1 by above-mentioned polarity judging part 4
Generation, and the first polarity of output judges that output signal 4a and the second polarity judge output signal 4b.On
The first output signal 4a and the second output signal 4b output for stating polarity judging part 4 multiply calculation to above-mentioned
Portion 5 and above-mentioned control unit 6.Fig. 2 shows the detailed circuit of polarity judging part.
Between input terminal 1,2, detect the polarity of AC power 0 and connect the first Check up polarity and use
The Check up polarity photoelectrical coupler 19 of photoelectrical coupler 18 and second, judges the pole of AC power 0
Property.
When AC power 0 is the positive half period, by 1 → current limitation resistor of input terminal 20 → the
The path streaming current of the illuminating part 18a → input terminal 2 of one photoelectrical coupler 18.Now, according to
The luminous output of the illuminating part 18a of the first photoelectrical coupler 18, the light accepting part of the first photoelectrical coupler
18b is turned on, corresponding to the electric current of the resistance value of the voltage and current limiting resistance 22 of dc source 25
The first divider resistance 23 is flowed through, the electricity of the resistance value corresponding to electric current and the first divider resistance 23 is produced
Pressure.The voltage of the generation is set as H level, the first polarity judges output signal 4a output H electricity
It is flat.Show that above-mentioned first polarity judges the waveform of output signal 4a at (b) of Fig. 8.
During due to AC power 0 for the negative half period, the illuminating part 18a in the first photoelectric coupling portion 18
As back voltage, so the light accepting part 18b of non-luminous photoelectrical coupler 18 turns into non-conduction, the
One polarity judges that output signal 4a exports L level.Current path now is with input terminal 2 → the
The path flowing of the illuminating part 19a of two photoelectrical coupler 19 → 21 → input terminal of current limitation resistor 1
Electric current.Now, the luminous output of the illuminating part 19a according to the second photoelectrical coupler 19, the first light
The light accepting part 19b conductings of electric coupler, according to dc source 25 and the resistance of current limitation resistor 22
Value, electric current flows through the second divider resistance 24, and the resistance value according to electric current and the second divider resistance 24 is produced
Raw voltage.Produced voltage is same as above-mentioned H level, and above-mentioned second polarity judges output signal
4b exports H level.Show that above-mentioned second polarity judges the ripple of output signal 4b at (c) of Fig. 8
Shape.
Here, in order to determine the instantaneous value of AC power 0 for positive or negative, the first of polarity judging part 4
Polarity judges that output signal 4a and the second polarity judge that output signal 4b will not be while export H level.
(on current detecting part)
Above-mentioned current detecting part 3 and the insulated detection of the current signal for flowing through above-mentioned inductor 7.For example
Use the current transformer 47 shown in Fig. 3.By circuital current flow path be considered as one time the one of coiling turn,
The secondary coiling insulated is set to hundreds of~thousands of turns, with 1/ 2 winding numbers of coiling in secondary coiling
Effluent streaming current.It is same so as to obtain and flow through the electric current of inductor 7 that the electric current flows through detection resistance 26
The voltage signal of phase.Due to the voltage signal and the same-phase of above-mentioned inductor 7, therefore above-mentioned exchange
When power supply 0 is the positive half period, positive voltage signal, negative half period are obtained from reference potential observation
When from reference potential observation obtain negative voltage.The defeated of above-mentioned current detecting part 3 is shown in Fig. 8 (h)
Go out the waveform of signal 27.
(on multiplying calculation portion)
The above-mentioned calculation portion 5 that multiplies is by the output signal 27 of above-mentioned current detecting part 3 and above-mentioned polarity judging part 4
The first polarity judging part output signal 4a and the second polarity judging part output signal 4b multiply calculation.Fig. 4
Show to multiply the skeleton diagram in calculation portion 5.Multiply calculation portion 5 to possess operational amplifier 29,30 and carry out multiplying calculation
Circuit 33 is calculated in multiplying for calculation, by the output signal 31,32 of above-mentioned operational amplifier 29,30 by upper
State multiply calculation circuit 33 multiply calculation gained signal as the above-mentioned output signal 28 for multiplying calculation portion 5.
Described as a example by when above-mentioned AC power 0 is the positive half period.Above-mentioned AC power 0 is positive
During the half period, above-mentioned first polarity being input into operational amplifier 29 judges that output signal 4a exports H
Level, 4b output L levels.These above-mentioned first polarity judge output signal 4a and the second polarity
Judge that output signal 4b is respectively inputted to the inversing input terminal 29 (-) of above-mentioned operational amplifier 29
With non-inverting input terminal 29 (+).Because above-mentioned first polarity judges that output signal 4a turns into reversion
Output, so turning into the output signal 31 for being converted to negative voltage from reference potential observation.If for example,
Above-mentioned first polarity judges that output signal 4a is 1V outputs, then be converted into -1V.Due to above-mentioned
Two polarity judge that output signal 4b is L level, therefore do not change.
The output signal 27 of above-mentioned electric current detecting element 3 of above-mentioned operational amplifier 30 is input to due to defeated
Enter the non-inverting input terminal 30 (+) to above-mentioned operational amplifier 30, so above-mentioned operational amplifier
30 output signal 32 turns into the signal equal with the output signal 27 of above-mentioned electric current detecting element 3.On
The output signal 32 of the output signal 31 and above-mentioned operational amplifier 30 of stating operational amplifier 29 passes through
The above-mentioned calculation circuit 33 that multiplies multiply calculation treatment, and the above-mentioned output signal 28 for multiplying calculation portion 5 exports above-mentioned
Signal after the polarity inversion of current detection signal 27.Action waveforms now are period shown in Fig. 8
Shown in the scope (i) of A.
On the other hand, when above-mentioned AC power 0 is for the negative half period, it is input to above-mentioned operational amplifier
29 above-mentioned first polarity judges that output signal 4a exports L level, and above-mentioned second polarity judges output
Signal 4b exports H level.These first polarity judge that output signal 4a and the second polarity judge defeated
Go out signal 4b be imported into the above-mentioned above-mentioned operational amplifier 29 for multiplying and possessing inside calculation portion 5 reversion it is defeated
Enter terminal 29 (-) and non-inverting input terminal 29 (+).Above-mentioned first polarity judges output signal 4a
For L level does not change.Above-mentioned second polarity judges that output signal 4b is imported into non-inverting input terminal
Sub 29 (+), the output signal 31 of above-mentioned operational amplifier 29 also turns into be sentenced with above-mentioned second polarity
The signal of disconnected output signal 4b same polarities.
It is input to the defeated of the above-mentioned above-mentioned electric current detecting element 3 for multiplying the operational amplifier 30 that calculation portion 5 possesses
Go out signal 27 due to being imported into the non-inverting input terminal 30 (+) of above-mentioned operational amplifier 30,
So the output signal 32 of above-mentioned operational amplifier 30 turns into believing with the output of above-mentioned electric current detecting element 3
Number 27 equal signals.The output signal 31 and above-mentioned operational amplifier of above-mentioned operational amplifier 29
30 output signal 32 multiply calculation treatment by the above-mentioned calculation circuit 33 that multiplies, above-mentioned to multiply calculation portion 5
Output signal 28 export the equal signal of output signal 27 of above-mentioned current detecting part 3.Now
Action waveforms are shown for the scope (i) of B during Fig. 8.
(on control unit)
Above-mentioned control unit 6 is configured to set power rate improvement control unit 35 and selector portion 37.Fig. 5
The skeleton diagram of above-mentioned control unit is shown.Above-mentioned power rate improves control unit 35 and possesses control booster type power rate
Improve the control logic used during circuit, the booster type power rate that can be for example sold using in the market is improved
Circuit control IC (integrated circuit) etc..
Improve control unit 35 to above-mentioned power rate and be input into the above-mentioned output signal 28 for multiplying calculation portion 5 and above-mentioned defeated
Go out the output signal 34 of voltage detection department, export single drive signal 36.Show at (d) of Fig. 8
Go out to improve from above-mentioned power rate the drive signal 36 of the output of control unit 35.
(e), (f) of middle Fig. 8 shows the output signal 38 and 39 of above-mentioned selector 37.
Above-mentioned first polarity is input into above-mentioned selector 37 judge that output signal 4a and the second polarity are sentenced
Disconnected output signal 4b and the drive signal 36 from the improvement output of control unit 35 of above-mentioned power rate, and export
As the drive signal that the drive signal of above-mentioned first switch element 8 and second switch element 9 is distributed
38 and 39.
(on output voltage test section)
Above-mentioned output voltage test section 12 possesses between the terminal of the terminal 40 and 44 shown in Fig. 7
3rd divider resistance 41 and the 4th divider resistance 43 of series connection, will be in the 3rd divider resistance 41 and the
The voltage that the tie point 42 of four divider resistances 43 is produced is believed as the output of above-mentioned output voltage test section
Numbers 34 outputs.
Terminal 40 shown in Fig. 7 improves the lead-out terminal of circuit with the totem pole type power rate shown in Fig. 1
14 same current potentials, terminal 44 and the same current potential of lead-out terminal 15 shown in Fig. 1.That is, by totem pole type power
Rate improves the output voltage of circuit with above-mentioned 3rd divider resistance 41 and the electricity of the 4th divider resistance 43
Resistance ratio partial pressure, output signal 34 is connected to above-mentioned power rate improves control unit 35.Wherein, power rate changes
Kind control unit includes that totem pole type power rate improves the control logic of circuit.
(input voltage is the action of timing)
Action waveforms shown in reference picture 8, the totem pole type power rate that narration possesses above-mentioned composition improves electricity
The action of the power inverter on road.
Show that the alternating voltage waveform (a) of above-mentioned AC power 0, above-mentioned first polarity judge in Fig. 8
Signal output waveform 4a (b), above-mentioned second polarity judges signal output waveform 4b (c), for driving
Dynamic above-mentioned power rate improve the drive signal 36 of the single switch element of control unit 35 waveform (d), on
State waveform (e), the output signal in above-mentioned selector portion 37 of the output signal 38 in selector portion 37
39 waveform (f), the current waveform (g) of the flowing of above-mentioned inductor 7, above-mentioned current detecting part 3
The waveform (h) of output signal 27, the above-mentioned output for the being rectified into positive or negative polarity letter for multiplying calculation portion 5
Numbers 28 waveform (i), the AC current waveform (j) from the supply of above-mentioned AC power 0.
Here, when explanation AC power 0 is the positive half period, i.e. during Fig. 8 during A, above-mentioned the
One polarity judges that output signal 4a exports the situation of H level.
When above-mentioned first polarity judges output signal 4a for H level, the second polarity judges output signal
4b turns into L level.The drive signal 36 and above-mentioned polarity that above-mentioned power rate improves control unit 35 judge
Output signal 4a is by being input to above-mentioned selector portion 37, the output signal in above-mentioned selector portion 37
39 are assigned to above-mentioned first switch element 8, and above-mentioned first switch is arrived in the drive signal output of H/L level
Element 8.On the other hand, because the output signal 38 in above-mentioned selector portion 37 remains L level,
So second switch element 9 continues to L level.
Based on the drive signal, above-mentioned second switch element 9 repeats conduction/non-conduction action, adjoint to be somebody's turn to do
Act savings/electric discharge that above-mentioned inductor 7 repeats energy.During the A of Fig. 8 shown in (g),
The streaming current of above-mentioned capacitor 7.Coiling of above-mentioned current detecting part 3 and inductor 7 flow together
The electric current of sample, shown in Fig. 3 detection resistance 26 produce voltage, as Fig. 8 A during (h) institute
Show, obtain the output signal 27 of above-mentioned current detecting part 3.The output signal of above-mentioned current detecting part 3
27 be input to it is above-mentioned multiply calculation portion 5, will enter into the above-mentioned computing that above-mentioned polarity judges output signal 4a
The output signal 31 of amplifier 29 and the output signal 27 of above-mentioned current detecting part 3 multiply calculation, obtain
Polarity inversion during the A of Fig. 8 shown in (i) is the output signal 28 for multiplying calculation portion 5 of negative polarity.
It is the above-mentioned output signal 28 for multiplying calculation portion 5 of negative polarity and above-mentioned output electricity by polarity inversion
The output signal 34 of test section 12 is pressed, controls above-mentioned power rate to improve the drive signal 36 of control unit 35
The H level time.
When the alternating current of above-mentioned AC power 0 is forced down, due to the savings electric charge of above-mentioned capacitor 13
Quantity delivered is few, so above-mentioned power rate improves the H level time of the single drive signal 36 of control unit 35
Increase, control the energy savings time put aside to above-mentioned inductor 7 to increase.
When the alternating voltage of above-mentioned AC power 0 is high, the supply of electric charge is put aside to above-mentioned capacitor 13
Amount increases.Therefore, the energy savings time to above-mentioned inductor 7 is shortened in control.Therefore, above-mentioned power
The H level time that rate improves the drive signal 36 of control unit 35 shortens.In this way, with above-mentioned alternating current
The alternating voltage in source 0 controls the conduction/non-conduction time of above-mentioned first switch element 8, so as to above-mentioned
Waveform during the A of the electric current as Fig. 8 of the flowing of inductor 7 shown in (g), with the positive half period
Alternating voltage be same-phase.
(action when input voltage is negative)
On the other hand, when illustrating AC power 0 for the negative half period, i.e. during Fig. 8 during B, on
State the second polarity and judge that output signal 4b exports the situation of H level.
When above-mentioned second polarity judges output signal 4b for H level, above-mentioned first polarity judges signal
4a turns into the output of L level.Above-mentioned power rate improves the single He of drive signal 36 of control unit 35
Above-mentioned second polarity judges that output signal 4b is imported into above-mentioned selector portion 37, so that above-mentioned selection
The output signal 39 in device portion 37 is assigned to above-mentioned second switch element 9, the drive signal of H/L level
Export above-mentioned first switch element.Based on the drive signal, above-mentioned second switch element 9 repeats to lead
Logical/non-conduction action, the savings/electric discharge of energy is repeated with the above-mentioned inductor 7 of the action.Above-mentioned
Inductor 7 flows the electric current as shown in B (g) during Fig. 8.
Coiling of above-mentioned current detecting part 3 and inductor 7 similarly streaming current, in Fig. 3 institutes
The detection resistance 26 shown produces voltage, the above-mentioned electric current inspection during obtaining the B such as Fig. 8 shown in (h)
The output signal 27 in survey portion 3.The output signal 27 of above-mentioned current detecting 3 is imported into and above-mentioned multiplies calculation
Portion 5, judges that output signal 4b and the output signal 27 of above-mentioned current detecting part 3 multiply by above-mentioned polarity
Calculate, the above-mentioned output signal for multiplying calculation portion 5 of the negative polarity during obtaining the B such as Fig. 8 shown in (i)
28。
By the above-mentioned output signal 28 for multiplying calculation portion 5 of negative polarity and above-mentioned output voltage test section 12
Output signal 34 control the above-mentioned power rate to improve the H electricity of the single drive signal 36 of control unit 35
Between usually.
As hereinbefore, when the alternating current of above-mentioned AC power 0 is forced down, due to above-mentioned capacitor 13
The quantity delivered for putting aside electric charge is few, so above-mentioned power rate improves the single drive signal 36 of control unit 35
The H level time increases, and control increases puts aside the time to the energy of above-mentioned inductor 7.
When the alternating voltage of above-mentioned AC power 0 is high, the supply of electric charge is put aside to above-mentioned capacitor 13
Amount increases.Therefore, the energy savings time to above-mentioned inductor 7 is shortened in control.Therefore, above-mentioned power
The H level time that rate improves the single drive signal 36 of control unit 35 shortens.In this way, with above-mentioned
The conduction/non-conduction time of the alternating voltage control second switch element 9 of AC power 0, so as to upper
Waveform during stating the B of the electric current as Fig. 8 of the flowing of inductor 7 shown in (g), with negative half cycle
The alternating voltage of phase is same-phase.
(on time rectification)
Above-mentioned totem pole type power rate improve circuit implementation method describe above-mentioned first switch element 8 with
And second switch element 9 judges the polarity of the alternating voltage of above-mentioned AC power 0, by alternately control
Conduction/non-conduction is acted, so as to control the electric current and above-mentioned AC power 0 of the flowing of above-mentioned inductor 7
Alternating voltage be same-phase.
By above-mentioned action, such as when above-mentioned AC power 0 is the positive half period, above-mentioned first switch
Element 8 carries out conduction/non-conduction action, and above-mentioned second switch element 9 turns into above-mentioned first switch element
8 path when non-conduction period releases the energy of the above-mentioned savings of inductor 7.Now, if will be upper
State first switch element 8 and be defined as main switch element, above-mentioned second switch element 9 is defined as into pair opens
Element is closed, then when the energy put aside above-mentioned inductor 7 is released, via being built in auxiliary switch element
Body diode puts aside electric charge to above-mentioned capacitor 13.Now, the power loss in auxiliary switch element is
The clockwise direction voltage of the electric current flowed in auxiliary switch element and the body diode for being built in auxiliary switch element
Product.
On the other hand, when main switch element is switched to non-conduction, auxiliary switch element conductive is made.Auxiliary switch
The resistance components that are produced during element conductive and the flowing of auxiliary switch element electric current square product feelings
Condition can reduce loss compared to the product of the electric current of the body diode and flowing of auxiliary switch element, have
Reduce the effect of loss.The action is referred to as time rectification, because the present invention is configured to a benchmark electricity
Potential energy enough generates the drive signal for driving above-mentioned first switch element 8 and second switch element 9, institute
Can be with time rectification with the composition for changing the above-mentioned control unit 6 shown in Fig. 5.Describe its details.
The difference of explanatory diagram 5 and Fig. 6.(referring to Fig. 5, it is Fig. 6 that time rectification is added to diode rectification)
Control unit 6 shown in Fig. 6 is the composition for realizing above-mentioned time rectification, and it is above-mentioned Fig. 5 institutes
The above-mentioned power rate of the control unit 6 for showing to improve and connect the same period between control unit 35 and above-mentioned selector portion 37
The structure of rectified signal generating unit 45.The output signal 46 of above-mentioned time rectification signal generation portion is inverted
The above-mentioned power rate of output driving improves the drive signal 36 of the single switch element of control unit 35.
The output signal 46 of above-mentioned time rectification signal generation portion 45, above-mentioned power rate are improved into control unit
35 single drive signal 36, above-mentioned polarity judge that output signal 4a, above-mentioned polarity judge output
Signal 4b is input to above-mentioned selector portion 37.When above-mentioned polarity judges output signal 4a for H level,
The output signal 38 in above-mentioned selector portion 37 exports the single drive for improving control unit 35 with above-mentioned power rate
The drive signal of the dynamic same-phase of signal 36, defines above-mentioned first switch element 8 as main switch element,
Above-mentioned second switch element 9 is auxiliary switch element.Above-mentioned first switch element 8 is that main switch element is led
During logical, above-mentioned second switch element 9 is auxiliary switch element non-conductive.On the other hand, above-mentioned first
When switch element 8 is that main switch element switches to non-conduction, above-mentioned second switch element 9 is auxiliary switch
Element switches to conducting.
Above-mentioned AC power 0 is the negative half period, and contrary to the above, above-mentioned second switch element 9 is
Main switch element, receives to improve the single same-phase of drive signal 36 of control unit 35 with above-mentioned power rate
Drive signal.Above-mentioned action interaction is carried out, by via the body diode energy for being built in switch element
Enough mitigations.
(effect)
As described above, in the power inverter of the totem pole type power rate improvement circuit of present embodiment,
Insulated sensed current signal, due to can as needed by the output signal of above-mentioned current detecting part 3
27 rectifications are positive or negative polarity, it is possible to directly diverting booster type power rate improves circuit control IC,
The control of the power inverter of totem pole type power rate improvement circuit can be realized by simple structure
Circuit.Additionally, in present embodiment, when driving first switch element and second switch element, by
In can be with time rectification, so having the advantages that the loss based on switch element can be mitigated.
Claims (10)
1. a kind of power inverter, it is characterised in that including：
First switch element and second switch element, the second switch element connect via first
Contact is connected with the first switch element；
First rectifier cell and the second rectifier cell, second rectifier cell connect via second
Contact is connected with first rectifier cell；
Capacitor, is arranged in parallel with first rectifier cell and the second rectifier cell；
Output voltage test section, is arranged in parallel with the capacitor；
AC power, between first tie point and second tie point, with electric current
Test section and inductor are connected；
Polarity judging part, judges the polarity of the AC power；
Multiply calculation portion, by the defeated of the output signal of the polarity judging part and the current detecting part
Go out signal and multiply calculation, output rectification is the signal of positive or negative polarity；And
Control unit, according to the signal being rectified, drives the first switch element and the
Two switch elements.
2. power inverter according to claim 1, it is characterised in that
The control unit includes：
Power rate improves control unit, including booster type power rate improves the control logic of circuit, described
Power rate improves control unit and multiplies the output signal in calculation portion, the output voltage test section according to
Output voltage, export the drive signal of single switch element；And
Selector portion, according to the output signal of the polarity judging part, the power rate is improved
The output signal of control unit is believed as the driving of the first switch element or second switch element
Number it is allocated.
3. power inverter according to claim 2, it is characterised in that
The control unit includes time rectification signal generation portion, the time rectification signal generation
Portion's reversion output power rate improves the output signal of control unit.
4. power inverter according to claim 3, it is characterised in that
The selector portion is input into the output signal of the polarity judging part, the power rate to improve
The output signal of the output signal of control unit, the time rectification signal generation portion, and according to
The output signal of the polarity judging part, by the power rate improve control unit output signal,
The output signal of the time rectification signal generation portion is used as first switch element or second switch
The drive signal of element is allocated.
5. power inverter according to claim 2, it is characterised in that
The control logic that the booster type power rate improves circuit is that booster type power rate improves circuit use
Control integrated circuit.
6. power inverter according to claim 1, it is characterised in that
The polarity judging part is connected with two terminals of the AC power, and the polarity is sentenced
Multiply calculation portion and the control unit described in two holding wires connection in disconnected portion, it is described to multiply the connection of calculation portion
In the current detecting part, the control unit is connected to two from the polarity judging part
Holding wire and from a holding wire for multiplying calculation portion, outlet side is connected to described first
Switch element and the second switch element.
7. power inverter according to claim 1, it is characterised in that
It is described multiply calculation portion multiply including operational amplifier and carrying out calculate calculation multiply calculation circuit, will
The output signal of the operational amplifier multiply described in calculation circuit multiply calculation gained signal be used as institute
State the output signal for multiplying calculation portion.
8. power inverter according to claim 1, it is characterised in that
The output voltage test section is included in the 3rd divider resistance connected between terminal and the
Four divider resistances, by the tie point of the 3rd divider resistance and the 4th divider resistance
The voltage of generation is exported as the output signal of the output voltage test section.
9. power inverter according to claim 2, it is characterised in that
The output voltage test section is included in the 3rd divider resistance connected between terminal and the
Four divider resistances, by the tie point of the 3rd divider resistance and the 4th divider resistance
The voltage of generation is exported as the output signal of the output voltage test section.
10. power inverter according to claim 8, it is characterised in that
The control unit includes that power rate improves control unit, and the power rate improves control unit includes figure
Rising column type power rate improves the control logic of circuit,
The totem pole type power rate improve the output voltage of circuit with the 3rd divider resistance with
And the resistance ratios partial pressure of the 4th divider resistance, the output of the output voltage test section
Signal is connected to the power rate improves control unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510844089.4A CN106803722B (en) | 2015-11-26 | 2015-11-26 | Power inverter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510844089.4A CN106803722B (en) | 2015-11-26 | 2015-11-26 | Power inverter |
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| CN106803722B CN106803722B (en) | 2019-02-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111053610A (en) * | 2018-10-16 | 2020-04-24 | 厄比电子医学有限责任公司 | Instrument for coagulating and dissecting biological tissue and method for operating such an instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3829087B2 (en) * | 2001-11-20 | 2006-10-04 | 三菱電機株式会社 | Power factor correction equipment |
| JP2007074799A (en) * | 2005-09-06 | 2007-03-22 | Fuji Electric Holdings Co Ltd | Controller of rectifying circuit |
| CN101584107A (en) * | 2007-01-24 | 2009-11-18 | 松下电器产业株式会社 | DC power supply device and air conditioner using the same |
| CN101682267A (en) * | 2007-06-04 | 2010-03-24 | 松下电器产业株式会社 | Electric power source control device and heat pump device using the electric power source control device |
| CN102843025A (en) * | 2012-08-06 | 2012-12-26 | 台达电子工业股份有限公司 | Control circuit, control method, and power supply system for power factor correction (PFC) circuit |
-
2015
- 2015-11-26 CN CN201510844089.4A patent/CN106803722B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3829087B2 (en) * | 2001-11-20 | 2006-10-04 | 三菱電機株式会社 | Power factor correction equipment |
| JP2007074799A (en) * | 2005-09-06 | 2007-03-22 | Fuji Electric Holdings Co Ltd | Controller of rectifying circuit |
| CN101584107A (en) * | 2007-01-24 | 2009-11-18 | 松下电器产业株式会社 | DC power supply device and air conditioner using the same |
| CN101682267A (en) * | 2007-06-04 | 2010-03-24 | 松下电器产业株式会社 | Electric power source control device and heat pump device using the electric power source control device |
| CN102843025A (en) * | 2012-08-06 | 2012-12-26 | 台达电子工业股份有限公司 | Control circuit, control method, and power supply system for power factor correction (PFC) circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111053610A (en) * | 2018-10-16 | 2020-04-24 | 厄比电子医学有限责任公司 | Instrument for coagulating and dissecting biological tissue and method for operating such an instrument |
| CN111053610B (en) * | 2018-10-16 | 2023-04-07 | 厄比电子医学有限责任公司 | Instrument for coagulating and dissecting biological tissue and method for operating such an instrument |
| US11648050B2 (en) | 2018-10-16 | 2023-05-16 | Erbe Elektromedizin Gmbh | Instrument for the coagulation and dissection of biological tissue and method for operating such an instrument |
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| CN106803722B (en) | 2019-02-19 |
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