CN211405616U - Random constant-voltage wireless power transmission compensation network structure based on relay coil - Google Patents
Random constant-voltage wireless power transmission compensation network structure based on relay coil Download PDFInfo
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- CN211405616U CN211405616U CN202020102496.4U CN202020102496U CN211405616U CN 211405616 U CN211405616 U CN 211405616U CN 202020102496 U CN202020102496 U CN 202020102496U CN 211405616 U CN211405616 U CN 211405616U
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Abstract
The utility model relates to an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil. The transmitting coil loop comprises a voltage source, a transmitting coil and a transmitting coil loop compensation capacitor which are connected in series, the relay coil loop comprises a relay coil and a relay coil loop compensation capacitor which are connected in series, the receiving coil loop comprises a receiving coil, a receiving coil loop series compensation capacitor, a receiving coil loop parallel compensation capacitor and a load, one end of the receiving coil is connected with one end of the receiving coil loop series compensation capacitor and one end of the receiving coil loop parallel compensation capacitor and one end of the load through the receiving coil loop series compensation capacitor, and the other end of the receiving coil is connected with the other end of the receiving coil loop parallel compensation capacitor and the other end of the load. The utility model discloses add parallelly connected compensation electric capacity on the basis that keeps original compensation network structure for the system obtains good output characteristic and reduces the capacity of dc-to-ac converter.
Description
Technical Field
The utility model relates to an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil.
Background
With the rapid development of the electric automobile industry, people put higher demands on the safety and convenience of a charging system. Therefore, the contactless charging system for the electric vehicle is also increasingly widely used. When the transmission distance increases, the transmission efficiency of the wireless power transmission system rapidly decreases. To solve the problem, inserting a relay coil between the transmitting coil and the receiving coil is a simple, easy, economical and effective way to increase the wireless energy transmission distance.
The existence of the relay coil plays a role of an energy transfer station, but the system has a plurality of power transmission paths, so that the design of a compensation network of the system is complicated, and better output characteristics are difficult to obtain.
At present, the existing compensation method is to control the resonance frequency of each coil self-inductance and the compensation capacitor to be consistent, so as to improve the energy transmission capability of the system. However, in such a compensation method, first, the output characteristic of the load is determined by the entire magnetic coupling system, and the internal reactance of the system cannot be completely compensated, so that the output voltage stabilization characteristic is poor. Second, in applications where there are three resonant frequencies in a magnetic coupling system with a relay coil, the problem of detuning the compensation network is more likely to occur than in a two-coil system without a relay coil. Thirdly, the magnetic coupling system with the relay coil has the cross coupling problem, and the influence of the cross coupling effect is eliminated by adding an impedance matching network or a series reactance compensation mode on the basis of the resonance compensation network of each coil in the prior art. However, such compensation method requires an increased number of devices, and the magnetic coupling system is completely determined once its output characteristics are given, and different output characteristics cannot be obtained by designing the compensation network parameters. The utility model discloses cross coupling and detuning problem among the wireless power transmission system to the three-coil, provide a compensation network structure that contains relay coil's three-coil magnetic coupling system, add parallelly connected compensation electric capacity on the basis that keeps original compensation network structure to design through compensation parameter makes the system obtain the constant voltage output characteristic of different grades and has effectively reduced the capacity of dc-to-ac converter. In the method, the relay coil does not work in a resonance state, and the system only has two resonance links, so that the detuning problem is not easy to occur compared with the traditional three-coil structure. Meanwhile, the method comprehensively considers the problem of cross coupling, so that the system is completely compensated, and good output characteristics are obtained.
The existing major compensation network topologies are as follows:
1. series capacitance compensation of transmitting, relaying and receiving coils
By using series capacitance compensation in each coil, the resonant angular frequency of each coil loop is controlled at the same angular frequency, i.e.
The compensation topology is shown in fig. 1. Wherein L is1For self-inductance of the transmitting coil, LrFor self-inductance of the relay coil, L2For self-inductance of the receiving coil, M1rFor mutual inductance between transmitter coil and relay coil, Mr2For mutual inductance between the relay coil and the receiver coil, M12For mutual inductance between transmitter coil and receiver coil, C1Compensating the capacitance for the transmitting coil loop, CrCompensating the capacitance for the relay coil loop, C2The capacitance is compensated for the receive coil loop.
From the compensation topology, the KVL equations for the three loops are listed as follows:
the output characteristics are as follows:
from its output characteristic expression, it is not difficult to find that the output voltage of the load is difficult to control, and also related to the coupling parameter, the cross-coupling effect is not eliminated. On the basis of series capacitance resonance compensation of transmitting, relaying and receiving coils, an impedance matching network or series reactance compensation is added, as shown in fig. 2-5, so as to eliminate the influence of cross coupling and reduce reactive power.
In summary, the conventional compensation method is to control the resonance frequency of each coil self-inductance to be consistent with the resonance frequency of the compensation capacitor, so as to improve the energy transmission capability of the system. However, in such a compensation method, first, the output characteristic of the load is determined by the entire magnetic coupling system, and the internal reactance of the system cannot be completely compensated, so that the output voltage stabilization characteristic is poor. Second, in applications where there are three resonant frequencies in a magnetic coupling system with a relay coil, the problem of detuning the compensation network is more likely to occur than in a two-coil system without a relay coil. Thirdly, the magnetic coupling system with the relay coil has the cross coupling problem, and the influence of the cross coupling effect is eliminated by adding an impedance matching network or a series reactance compensation mode on the basis of the resonance compensation network of each coil in the prior art. However, such compensation method requires an increased number of devices, and the magnetic coupling system is completely determined once its output characteristics are given, and different output characteristics cannot be obtained by designing the compensation network parameters.
Disclosure of Invention
An object of the utility model is to provide an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil realizes that relay coil is out of work in the resonance state, and the system has only two resonance links, and more traditional three-coil structure is difficult for appearing the detuning problem to the capacity of dc-to-ac converter has effectively been reduced.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes series connection's receiving coil, receiving coil return circuit series compensation capacitance, load.
The utility model also provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation electric capacity, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes series connection's receiving coil, load.
The utility model also provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation electric capacity, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes receiving coil, receiving coil return circuit series compensation electric capacity, the parallelly connected compensation electric capacity in receiving coil return circuit, load, receiving coil's one end is connected through receiving coil return circuit series compensation electric capacity and the one end of the parallelly connected compensation electric capacity in receiving coil return circuit, the one end of load, and receiving coil's the other end is connected with the other end of the parallelly connected compensation electric capacity in receiving coil return circuit, the other end of load.
The utility model provides another kind of arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes receiving coil, receiving coil return circuit series compensation electric capacity, the parallelly connected compensation electric capacity in receiving coil return circuit, load, receiving coil's one end is connected through receiving coil return circuit series compensation electric capacity and the one end of the parallelly connected compensation electric capacity in receiving coil return circuit, the one end of load, and receiving coil's the other end is connected with the other end of the parallelly connected compensation electric capacity in receiving coil return circuit, the other end of load.
The utility model discloses still provide another kind of arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation electric capacity, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes parallel connection's receiving coil, receiving coil return circuit parallel compensation electric capacity, load.
The utility model discloses still provide another kind of arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes parallel connection's current source, transmitting coil compensation electric capacity, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes series connection's receiving coil, receiving coil return circuit series compensation electric capacity, load.
The utility model discloses still provide another kind of arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes parallel connection's current source, transmitting coil compensation electric capacity, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes series connection's receiving coil, load.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model has the advantages that the relay coil does not work in a resonance state, the system only has two resonance links, and the detuning problem is not easy to occur compared with the traditional three-coil structure;
2. the utility model discloses can effectively reduce the capacity of dc-to-ac converter.
Drawings
Fig. 1 is a compensation topology for series capacitance resonance of coils.
Figure 2 is a compensation topology with the addition of series reactance.
Figure 3 is a compensation topology with the addition of a type I impedance matching network.
Fig. 4 is a compensation topology with the addition of a pi-type impedance matching network.
Fig. 5 is a compensation topology with the addition of a T-type impedance matching network.
FIG. 6 is a three coil mutual inductance model.
Fig. 7 is a transformer T model.
Figure 8 is a prior art SSS compensation network architecture.
Fig. 9 shows the SS compensation network structure 1 of the present invention.
Fig. 10 is the SS compensation network architecture 2 of the present invention.
Fig. 11 is the SSSP compensation network structure of the present invention.
Fig. 12 shows the SSP compensation network structure 1 of the present invention.
Figure 13 is the SSP compensation network configuration 2 of the present invention.
Fig. 14 shows the PSS compensation network structure of the present invention.
Fig. 15 shows the PS compensation network structure of the present invention.
Fig. 16 shows a simulation result of the first embodiment of the present invention.
Fig. 17 shows a simulation result of the second embodiment of the present invention.
Fig. 18 shows a simulation result of the third embodiment of the present invention.
Fig. 19 shows a simulation result of the fourth embodiment of the present invention.
Fig. 20 is a flowchart of the compensation network structure compensation method of the present invention.
Detailed Description
The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.
As shown in fig. 9, the utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, a serial communication port, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes series connection's receiving coil, receiving coil return circuit series compensation electric capacity, load.
As shown in fig. 10, the utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, a serial communication port, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation electric capacity, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes series connection's receiving coil, load.
As shown in fig. 11, the present invention provides an arbitrary constant voltage wireless power transmission compensation network based on a relay coil, which adds a parallel compensation capacitor on the basis of maintaining the original compensation network structure, so that the system obtains constant voltage output characteristics of different levels and reduces the capacity of an inverter; the transmitting coil loop comprises a voltage source, a transmitting coil and a transmitting coil loop compensation capacitor which are connected in series, the relay coil loop comprises a relay coil and a relay coil loop compensation capacitor which are connected in series, the receiving coil loop comprises a receiving coil, a receiving coil loop series compensation capacitor, a receiving coil loop parallel compensation capacitor and a load, one end of the receiving coil is connected with one end of the receiving coil loop parallel compensation capacitor and one end of the load through the receiving coil loop series compensation capacitor, and the other end of the receiving coil is connected with the other end of the receiving coil loop parallel compensation capacitor and the other end of the load.
As shown in fig. 14, the utility model provides an arbitrary constant voltage wireless power transmission compensation network based on relay coil, including transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes parallel connection's current source, transmitting coil compensation electric capacity, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation electric capacity, the receiving coil return circuit includes series connection's receiving coil, receiving coil return circuit series compensation electric capacity, load.
In this embodiment, based on the two-port characteristics, the original multi-stage and complex mutual inductance model of the three coils is equivalent to a simple and clear transformer T model, and an equivalent circuit model thereof is shown in fig. 7. The equivalent transformer T model eliminates the relay coil as a transfer station, and integrates the coupling relation of the coils into Lpk, Lsk, Lm, n in the transformer T model.
From KVL, the loop voltage equations are listed:
wherein L is1，Lr，L2Respectively a transmitting coil self-inductance, a relay coil self-inductance and a receiving coil self-inductance, M1rFor mutual inductance between transmitter coil and relay coil, Mr2For mutual inductance between the relay coil and the receiver coil, M12For mutual inductance between transmitter coil and receiver coil, CrFor compensating the capacitance of the relay coil loop, omega is the angular frequency of system operation, different from omega0。
The matrix expression is also derived:
Lpkand LskThe equivalent leakage inductance of the primary side and the secondary side in the transformer T model respectively, n is the equivalent transformation ratio of the transformer T model, the transformation ratio is different from the physical turn ratio of the transformer, theoretically, the transformation ratio can be any value (including real number and complex number), and L ismThe equivalent excitation inductance of the transformer T model.
To ensure that the characteristics of the two ports are the same, the relationship between each parameter in the transformer T model and each parameter in the mutual inductance model can be obtained as follows:
L1，L2，Lr，M1r，Mr2，M12all can be obtained by actual measurement, and the relay coil compensates the capacitor CrIs selected not to be equal to
(ω0Representing the natural angular frequency of resonance), i.e. the relay coil is in a detuned condition. According to the expression, the magnetic coupling structure and the compensation capacitor C of the wireless power transmission systemrFixation of value, Lm，Lpk，LskCan be determined by different n. And placing the equivalent transformer T model in a wireless power transmission system. The equivalent transformer T model is an equivalent method based on the detuning condition of the relay coil, not only integrates the cross coupling into the equivalent model to realize the decoupling of the relay coil, but also provides a new way for eliminating the cross coupling.
In this embodiment, as shown in fig. 8, a method for determining parameters of a compensation network structure based on an original three-coil magnetic coupling system includes the following steps:
step A1: the three-coil mutual inductance model is equivalent to a transformer T model (shown in figures 6 and 7);
step A2: cs1And LpkSeries resonant, voltage source UinAmplified by n times by transformer and applied to secondary side, LpkAnd LskRespectively equivalent leakage inductance of a primary side and a secondary side in a transformer T model, and n is an equivalent transformation ratio of the transformer T model (the transformation ratio is different from a physical turn ratio of the transformer and can be any value in theory, including real numbers and complex numbers);
step A3: cs2And LskSeries resonance, nUinApplied to an output load to achieve a constant voltage output, with parameters determined asThe following:
wherein L is1，Lr，L2Respectively a transmitting coil self-inductance, a relay coil self-inductance and a receiving coil self-inductance, M1rFor mutual inductance between transmitter coil and relay coil, Mr2For mutual inductance between the relay coil and the receiver coil, M12For mutual inductance between transmitter coil and receiver coil, CrCompensating capacitance for a relay coil loop, wherein omega is the working angular frequency of the system;
step A4: according to the output current URLThe size, namely the value of n is determined, and the required capacitance value is further determined, so that the required voltage gain is realized and the change of the voltage gain is avoided;
when C is presents1At infinity, i.e.
At this time Cs1The capacitor can be replaced by a short circuit line, as shown in fig. 9;
when C is presents2At infinity, i.e.
At this time Cs2The capacitor may be replaced by a short circuit line as shown in fig. 10.
In this embodiment, the parameter determination method of the compensation network structure based on the three-coil magnetic coupling system shown in fig. 11 includes the following steps:
step B1: the three-coil mutual inductance model is equivalent to a transformer T model (shown in figures 6 and 7);
step B2: cs1And LpkSeries resonant, voltage source UinAmplified by n times by transformer and applied to secondary side, LpkAnd LskEquivalent leakage inductance, L, of the primary side and the secondary side in the transformer T model respectivelymIs the equivalent excitation inductance of the transformer T model, and n is the equivalent transformation ratio of the transformer T model (the transformation ratio is different from the physical turn ratio of the transformer and theoretically can beTo be any value, including real and complex);
step B3: cs2And LskSeries resonance, CpAnd LmParallel resonance reactive power reduction, nUinThe constant voltage output is realized by applying the constant voltage output on an output load, and the parameters are determined as follows:
wherein L is1，Lr，L2Respectively a transmitting coil self-inductance, a relay coil self-inductance and a receiving coil self-inductance, M1rFor mutual inductance between transmitter coil and relay coil, Mr2For mutual inductance between the relay coil and the receiver coil, M12For mutual inductance between transmitter coil and receiver coil, CrCompensating capacitance for a relay coil loop, wherein omega is the working angular frequency of the system;
step B4: according to the output current URLThe size, namely the value of n is determined, and the required capacitance value is further determined, so that the required voltage gain is realized and the change of the voltage gain is avoided;
when C is presents1At infinity, i.e.
At this time Cs1The capacitor may be replaced by a short-circuited line, as shown in fig. 12;
when C is presents2At infinity, i.e.
At this time Cs2The capacitor may be replaced by a short circuit line as shown in fig. 13.
In this embodiment, the parameter determination method of the compensation network structure based on the three-coil magnetic coupling system shown in fig. 14 includes the following steps:
step C1: the three-coil mutual inductance model is equivalent to a transformer T model (shown in figures 6 and 7);
step C2: through equivalent source transformation, the current source is equivalent to the voltage source
CpAnd LpkSeries resonant, equivalent back voltage source
Amplified by n times by transformer, applied to the secondary side, LpkAnd LskRespectively equivalent leakage inductance of a primary side and a secondary side in a transformer T model, and n is an equivalent transformation ratio of the transformer T model (the transformation ratio is different from a physical turn ratio of the transformer and can be any value in theory, including real numbers and complex numbers);
step C3: csAnd LskSeries resonance, equivalent source
The constant voltage output is realized by applying the constant voltage output on an output load, and the parameters are determined as follows:
wherein L is1，Lr，L2Respectively a transmitting coil self-inductance, a relay coil self-inductance and a receiving coil self-inductance, M1rFor mutual inductance between transmitter coil and relay coil, Mr2For mutual inductance between the relay coil and the receiver coil, M12For mutual inductance between transmitter coil and receiver coil, CrCompensating capacitance for a relay coil loop, wherein omega is the working angular frequency of the system;
step C4: according to the output current URLThe size, namely the value of n is determined, and the required capacitance value is further determined, so that the required voltage gain is realized and the change of the voltage gain is avoided;
when C is presentsAt infinity, i.e.
At this time CsThe capacitor may be replaced by a short circuit line as shown in fig. 15.
In this embodiment, if the required capacitance value is calculated to have a negative value, the capacitance is compensated by the inductance, and the relationship between the compensation inductance value and the negative compensation capacitance value is shown as the following formula:
the embodiment of the utility model provides a:
for a three-coil wireless power transmission system working at the frequency of 100kHz, the self-inductance of a transmitting coil of a magnetic coupling structure is 240uH, the self-inductance of a relay coil is 200uH, and the self-inductance of a receiving coil is 100uH and K1r＝0.11，Kr2＝0.285，K120.053, relay coil resonance capacitance CrSelecting
The detuning condition of the relay coil is characterized, the amplitude of an inversion input source connected with a transmitting coil is 100V, and the compensation mode is as follows:
when the required output amplitude is 100V, namely the transformation ratio n is 1, C is calculated by using the formulas1，Cs2And CpAt this time Cs1＝11.82nF，Cs2＝20.9nF，CpWhen 48.74nF is reached, the output side can output 100V at constant voltage, and the simulation result is shown in fig. 16;
when the required output amplitude is 150V, namely the transformation ratio n is 1.5, C is calculated by using the formulas1，Cs2And CpAt this time Cs1＝10.94nF，Cs2＝26.6nF，CpAt this time, the output side can achieve the effect of outputting 150V at constant voltage, and the simulation result is shown in fig. 17;
when the required output amplitude is 400V, namely the transformation ratio n is 4, C is calculated by using the formulas1，Cs2And CpAt this time Cs1＝10.0nF，Cp＝12.18nF，Cs2Negative value of-72.99 nF, applying formula and selecting inductance Ls234.70uH instead of Cs2At this time, the output side can achieve the effect of outputting 400V at a constant voltage, the simulation result is shown in fig. 18, the inverter capacity is effectively reduced, and the simulation result is shown in fig. 19.
Fig. 20 is a flowchart of the compensation network structure compensation method of the present invention.
Above is the utility model discloses a preferred embodiment, all rely on the utility model discloses the change that technical scheme made, produced functional action does not surpass the utility model discloses during technical scheme's scope, all belong to the utility model discloses a protection scope.
Claims (7)
1. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes series connection's receiving coil, receiving coil return circuit series compensation capacitance, load.
2. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation capacitance, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes series connection's receiving coil, load.
3. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that, includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation capacitance, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes receiving coil, receiving coil return circuit series compensation capacitance, the parallelly connected compensation capacitance of receiving coil return circuit, load, the one end of receiving coil is connected through receiving coil return circuit series compensation capacitance and the parallelly connected compensation capacitance's of receiving coil return circuit one end, the one end of load, and the other end of receiving coil and the other end of the parallelly connected compensation capacitance's of receiving coil return circuit, the other end of load are connected.
4. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that, includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes receiving coil, receiving coil return circuit series compensation capacitance, the parallelly connected compensation capacitance of receiving coil return circuit, load, the one end of receiving coil is connected through receiving coil return circuit series compensation capacitance and the one end of the parallelly connected compensation capacitance of receiving coil return circuit, the one end of load, and the other end of receiving coil and the other end of the parallelly connected compensation capacitance of receiving coil return circuit, the other end of load are connected.
5. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes series connection's voltage source, transmitting coil return circuit compensation capacitance, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes parallel connection's receiving coil, receiving coil return circuit parallel compensation capacitance, load.
6. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes parallel connection's current source, transmitting coil compensation capacitance, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit series compensation capacitance, the receiving coil return circuit includes series connection's receiving coil, receiving coil return circuit compensation capacitance, load.
7. The utility model provides an arbitrary constant voltage wireless power transmission compensation network structure based on relay coil, its characterized in that includes transmitting coil return circuit, relay coil return circuit, receiving coil return circuit, the transmitting coil return circuit includes parallel connection's current source, transmitting coil compensation capacitance, transmitting coil, the relay coil return circuit includes series connection's relay coil, relay coil return circuit compensation capacitance, the receiving coil return circuit includes series connection's receiving coil, load.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350579A (en) * | 2020-10-22 | 2021-02-09 | 南京邮电大学 | Secondary side parameter design method adaptive to any primary side series compensation WPT system |
| CN114006478A (en) * | 2021-11-17 | 2022-02-01 | 重庆前卫无线电能传输研究院有限公司 | Electronic mall exhibition and sales table based on wireless power supply and circuit parameter design method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350579A (en) * | 2020-10-22 | 2021-02-09 | 南京邮电大学 | Secondary side parameter design method adaptive to any primary side series compensation WPT system |
| CN114006478A (en) * | 2021-11-17 | 2022-02-01 | 重庆前卫无线电能传输研究院有限公司 | Electronic mall exhibition and sales table based on wireless power supply and circuit parameter design method thereof |
| CN114006478B (en) * | 2021-11-17 | 2024-01-30 | 重庆前卫无线电能传输研究院有限公司 | Electronic mall exhibition stand based on wireless power supply and circuit parameter design method thereof |
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