CN115940437A - Series-series compensation wireless power transmission system and parameter configuration method - Google Patents
Series-series compensation wireless power transmission system and parameter configuration method Download PDFInfo
- Publication number
- CN115940437A CN115940437A CN202211475317.1A CN202211475317A CN115940437A CN 115940437 A CN115940437 A CN 115940437A CN 202211475317 A CN202211475317 A CN 202211475317A CN 115940437 A CN115940437 A CN 115940437A
- Authority
- CN
- China
- Prior art keywords
- power transmission
- wireless power
- coupling coil
- output
- rectifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Inverter Devices (AREA)
Abstract
The application relates to a series-series compensation wireless power transmission system and a parameter configuration method. The specific scheme is as follows: the system comprises a plurality of wireless power transmission modules, wherein the wireless power transmission modules are connected in parallel, each wireless power transmission module comprises a high-frequency inverter, a transmitting side compensation module, a receiving side compensation module, a coupling coil and a rectifier, and the input ends of the high-frequency inverters are connected in parallel; the output ends of the plurality of rectifiers are connected in parallel; the output end of the high-frequency inverter is connected with the input end of the coupling coil, and the output end of the coupling coil is connected with the input end of the rectifier; a compensation module is connected on a line between the output end of the high-frequency inverter and the input end of the coupling coil; and a compensation module is connected on a line between the output end of the coupling coil and the input end of the rectifier. The high-power output requirement of a wireless power transmission system is met, and the size of a single coupling coil is reduced.
Description
Technical Field
The present disclosure relates to the field of wireless power transmission technologies, and in particular, to a series-series compensation wireless power transmission system and a parameter configuration method.
Background
In the related technology, the wireless power transmission technology is used in a distributed photovoltaic household system, a new direction can be provided for the distributed photovoltaic power transmission, and as grooving and punching are not needed for the wall body of a house for many times, a foundation can be laid for the deep research of safe and reliable new energy power utilization. In a large-capacity wireless power transmission occasion, a single large-size coupling coil is installed at a receiving end without enough room space, and the small-size coupling coil can reduce the power density of wireless power transmission.
Disclosure of Invention
Therefore, the application provides a series-series compensation wireless power transmission system and a parameter configuration method. The technical scheme of the application is as follows:
according to a first aspect of embodiments of the present application, there is provided a series-series type compensation wireless power transmission system including a plurality of wireless power transmission modules connected in parallel, each of the plurality of wireless power transmission modules including a high frequency inverter, a transmission side compensation module, a reception side compensation module, a coupling coil, and a rectifier, wherein,
the input ends of the plurality of high-frequency inverters are connected in parallel;
the output ends of the plurality of rectifiers are connected in parallel;
the output end of each high-frequency inverter is connected with the input end of a coupling coil of the same wireless power transmission module, and the output end of each coupling coil is connected with the input end of a rectifier of the same wireless power transmission module;
a compensation module is connected to a line between the output end of each high-frequency inverter and the input end of the coupling coil of the same wireless power transmission module;
and a compensation module is connected on a line between the output end of each coupling coil and the corresponding input end of the rectifier.
According to one embodiment of the application, the plurality of coupling coils are arranged in a fitting mode.
According to an embodiment of the present application, the output of each high frequency inverter comprises a first output of the high frequency inverter and a second output of the high frequency inverter, each of the transmission side compensation modules comprises a transmission side compensation capacitor, and the input of each of the coupling coils comprises a first input of the coupling coil and a second input of the coupling coil, wherein,
the first output end of each high-frequency inverter is connected with the first end of the first compensation capacitor of the same wireless power transmission module;
the second end of each first compensation capacitor is connected with the first input end of the coupling coil of the same wireless power transmission module;
and a second output end of each high-frequency inverter is connected with a second input end of the coupling coil of the same wireless power transmission module.
According to one embodiment of the present application, each of the high frequency inverters comprises two inverter legs, each of the inverter legs comprises two inverter submodules, each of the inverter submodules comprises a switching tube and a diode, wherein,
the input ends of the plurality of high-frequency inverters are connected in parallel;
the two inverter bridge arms of the same wireless power transmission module are connected in parallel, the two inverter submodules of the same inverter bridge arm are connected in series, and the diodes of the same inverter submodules are connected with the switch tube in reverse parallel;
two ends of each inverter bridge arm are connected with two ends of a direct current power supply in parallel;
a first input end of each coupling coil is connected with a second end of the first compensation capacitor of the same wireless power transmission module, and a first end of each first compensation capacitor is connected to a line between two inversion submodules of one inversion bridge arm of the same wireless power transmission module through a line;
and the second input end of each coupling coil is connected to a line between two inversion submodules of the other inversion bridge arm of the same wireless power transmission module through a line.
According to an embodiment of the present application, the output terminal of each rectifier comprises a rectifier first input terminal and a rectifier second input terminal, each receiving-side compensation module comprises a receiving-side compensation capacitor, the output terminal of each coupling coil comprises a coupling coil first output terminal and a coupling coil second output terminal, wherein,
a first output end of each coupling coil is connected with a first end of the second compensation capacitor of the same wireless power transmission module;
the second end of each second compensation capacitor is connected with the first input end of the rectifier of the same wireless power transmission module;
and the second output end of each coupling coil is connected with the second input end of the rectifier of the same wireless power transmission module.
According to an embodiment of the application, each of the rectifiers comprises a rectifier bridge, wherein,
the output ends of the plurality of high-frequency inverters are connected in parallel;
a first output end of each coupling coil is connected with a first end of the second compensation capacitor of the same wireless power transmission module;
the second end of each second compensation capacitor is connected with the first input end of the rectifier bridge of the same wireless power transmission module;
and the second output end of each coupling coil is connected with the second input end of the rectifier bridge of the same wireless power transmission module.
According to an embodiment of the application, each of the rectifiers further comprises an energy storage capacitor, wherein,
the first end of each energy storage capacitor is connected with the first output end of the rectifier bridge of the same rectifier;
and the second end of each energy storage capacitor is connected with the second output end of the rectifier bridge of the same rectifier.
According to a second aspect of embodiments of the present application, there is provided a parameter configuration method applied to the series-series compensation wireless power transmission system in any one of the first aspects, including:
establishing a calculation relation of impedance of each high-frequency inverter based on the output voltage of each high-frequency inverter and the output current of each high-frequency inverter;
acquiring an imaginary part of the impedance of the high-frequency inverter based on the impedance calculation relation;
acquiring self-inductance values of the plurality of coupling coils and mutual inductance values among the plurality of coupling coils;
setting the imaginary part of the high-frequency inverter impedance to be 0, and respectively determining the capacitance value of the transmitting side compensation capacitor and the capacitance value of the receiving side compensation capacitor based on the obtained self-inductance values of the plurality of coupling coils and the mutual inductance values among the plurality of coupling coils.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
according to the wireless power transmission system, the plurality of wireless power transmission modules are arranged in parallel, so that the high-power output requirement of the wireless power transmission system is met, the higher electric stress on the coupling coil of the wireless power transmission system is reduced, the size of a single coupling coil is reduced, and the high-power output is realized; in addition, the imaginary part of the output impedance of the high-frequency inverter is set to be zero, so that mutual inductance among a plurality of coupling coils is eliminated, further capacitive reactive power is eliminated, and the transmission efficiency of electric energy is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application and are not to be construed as limiting the application.
Fig. 1 is a circuit diagram of a series-series compensated wireless power transmission system according to an embodiment of the present application;
fig. 2 is a flowchart of a parameter configuration method of a series-series compensation wireless power transmission system according to an embodiment of the present application.
Reference numerals
101. A first high frequency inverter; 102. a first transmitting side compensation capacitor; 103. a first coupling coil; 104. a first receiving side compensation capacitor; 105. a first rectifier; 106. a second high frequency inverter; 107. a second transmitting side compensation capacitor; 108. a second coupling coil; 19. a second receiving side compensation capacitor; 110. a second rectifier.
Detailed Description
In order to make the technical solutions of the present application better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
It should be noted that, in the related art, the wireless power transmission technology is used in the distributed photovoltaic household system, so that a new direction can be provided for the distributed photovoltaic power transmission, and as the house wall does not need to be grooved and punched for many times, a foundation can be laid for the deep research of safe and reliable new energy power utilization. In a large-capacity wireless power transmission occasion, a single large-size coupling coil is installed at a receiving end without enough room space, and the small-size coupling coil can reduce the power density of wireless power transmission.
Based on the problems, the application provides a series-series compensation wireless power transmission system and a parameter configuration method, so that the requirement of high-power output of the wireless power transmission system is met by arranging a plurality of wireless power transmission modules in parallel, the higher electric stress on a coupling coil of the wireless power transmission system is reduced, the size of a single coupling coil is reduced, and the high-power output is realized; in addition, the imaginary part of the output impedance of the high-frequency inverter is set to be zero, so that mutual inductance among the coupling coils is eliminated, capacitive reactive power is eliminated, and the transmission efficiency of electric energy is improved.
The embodiment of the application provides a series-series compensation wireless power transmission system.
The series-series type compensation wireless power transmission system includes: the wireless power transmission system comprises a plurality of wireless power transmission modules which are connected in parallel, wherein each wireless power transmission module comprises a high-frequency inverter, a transmitting side compensation module, a receiving side compensation module, a coupling coil and a rectifier.
The input ends of the high-frequency inverters are connected in parallel; the output ends of the plurality of rectifiers are connected in parallel; the output end of each high-frequency inverter is connected with the input end of the coupling coil of the same wireless power transmission module, and the output end of each coupling coil is connected with the input end of the rectifier of the same wireless power transmission module; a compensation module is connected on a line between the output end of each high-frequency inverter and the input end of the coupling coil of the same wireless power transmission module; and a compensation module is connected on a line between the output end of each coupling coil and the input end of the corresponding rectifier.
In some embodiments of the present application, a plurality of coupling coils are disposed in a fitting manner.
As a possible example, a plurality of coupling coils are arranged in a fitting manner, so that the occupied space of the wireless power transmission system is reduced while the requirement of high power output of the system is met.
In some embodiments of the present application, the output end of each high-frequency inverter comprises a first output end of the high-frequency inverter and a second output end of the high-frequency inverter, each transmission-side compensation module comprises a transmission-side compensation capacitor, and the input end of each coupling coil comprises a first input end of the coupling coil and a second input end of the coupling coil, wherein the first output end of each high-frequency inverter is connected with the first end of the first compensation capacitor of the same wireless power transmission module; the second end of each first compensation capacitor is connected with the first input end of the coupling coil of the same wireless power transmission module; and the second output end of each high-frequency inverter is connected with the second input end of the coupling coil of the same wireless power transmission module.
In some embodiments of the present application, each high-frequency inverter includes two inverter bridge arms, each inverter bridge arm includes two inverter submodules, each inverter submodule includes a switch tube and a diode, wherein input ends of a plurality of high-frequency inverters are connected in parallel; two inverter bridge arms of the same wireless power transmission module are connected in parallel, two inverter submodules of the same inverter bridge arm are connected in series, and a diode of the same inverter submodule is connected with a switching tube in reverse parallel; two ends of each inversion bridge arm are connected with two ends of the direct current power supply in parallel; a first input end of each coupling coil is connected with a second end of a first compensation capacitor of the same wireless power transmission module, and a first end of each first compensation capacitor is connected to a line between two inverter sub-modules of one inverter bridge arm of the same wireless power transmission module through a line; and the second input end of each coupling coil is connected to a line between two inversion submodules of the other inversion bridge arm of the same wireless power transmission module through a line.
In some embodiments of the present application, the output end of each rectifier includes a rectifier first input end and a rectifier second input end, each receiving side compensation module includes a receiving side compensation capacitor, and the output end of each coupling coil includes a coupling coil first output end and a coupling coil second output end, where each coupling coil first output end is connected to a first end of a second compensation capacitor of the same wireless power transmission module; the second end of each second compensation capacitor is connected with the first input end of the rectifier of the same wireless power transmission module; and the second output end of each coupling coil is connected with the second input end of the rectifier of the same wireless power transmission module.
In some embodiments of the present application, each rectifier comprises a rectifier bridge, wherein the output ends of a plurality of high frequency inverters are connected in parallel; the first output end of each coupling coil is connected with the first end of a second compensation capacitor of the same wireless power transmission module; the second end of each second compensation capacitor is connected with the first input end of the rectifier bridge of the same wireless power transmission module; and the second output end of each coupling coil is connected with the second input end of the rectifier bridge of the same wireless power transmission module.
In some embodiments of the present application, each rectifier further includes an energy storage capacitor, wherein a first end of each energy storage capacitor is connected to a first output end of a rectifier bridge of the same rectifier; and the second end of each energy storage capacitor is connected with the second output end of the rectifier bridge of the same rectifier.
For example, as shown in fig. 1, the output terminal of the first high-frequency inverter 101 is connected to the input terminal of the first transmitting-side compensation capacitor 102, the output terminal of the first transmitting-side compensation capacitor 102 is connected to the input terminal of the first coupling coil 103, the output terminal of the first coupling coil 103 is connected to the input terminal of the first receiving-side compensation capacitor 104, and the output terminal of the first receiving-side compensation capacitor 104 is connected to the input terminal of the first rectifier 105; similarly, the output terminal of the second high-frequency inverter 106 is connected to the input terminal of the second transmitting-side compensation capacitor 107, the output terminal of the second transmitting-side compensation capacitor 107 is connected to the input terminal of the second coupling coil 108, the output terminal of the second coupling coil 108 is connected to the input terminal of the second receiving-side compensation capacitor 109, and the output terminal of the second receiving-side compensation capacitor 109 is connected to the input terminal of the second rectifier 110. The input of the first high frequency inverter 101 is connected in parallel with the input of the second high frequency inverter 106, and the output of the first rectifier 105 is also connected in parallel with the output of the second rectifier 110.
When a direct current is input to an input terminal of the first high-frequency inverter 101, the direct current is inverted into a high-frequency alternating current by the first high-frequency inverter 101, and the high-frequency alternating current is input to the first coupling coil 103 through the first transmitting-side compensation capacitor 102, wherein the first transmitting-side compensation capacitor 102 is responsible for compensating reactive power in power transmission and filtering high-frequency harmonics, the first coupling coil 103 is responsible for transmitting electric energy from a transmitting side to a receiving side, and then the electric energy at the receiving side is input to an input terminal of the first rectifier 105 through the first receiving-side compensation capacitor 104, wherein the first receiving-side compensation capacitor 104 is responsible for compensating reactive power in power transmission and filtering high-frequency harmonics, and the first rectifier 105 is responsible for rectifying the high-frequency alternating current into a direct current.
According to the series-series compensation wireless power transmission system, the plurality of wireless power transmission modules are arranged in parallel, the high-power output requirement of the wireless power transmission system is met, meanwhile, the high electric stress on the coupling coil of the wireless power transmission system is reduced, the size of a single coupling coil is reduced, and then the existing single wireless power transmission system is fully utilized to achieve modularized high-power output.
Fig. 2 is a flowchart of a parameter configuration method of a series-series compensation wireless power transmission system according to an embodiment of the present application.
As shown in fig. 2, the method for configuring parameters of the series-series type compensation wireless power transmission system includes:
step 201, establishing a calculation relation of impedance of each high-frequency inverter based on the output voltage of each high-frequency inverter and the output current of each high-frequency inverter.
Step 202, obtaining an imaginary part of the impedance of the high-frequency inverter based on the impedance calculation relation.
Step 203, obtaining respective self-inductance values of the plurality of coupling coils and mutual inductance values among the plurality of coupling coils.
And 204, setting the imaginary part of the impedance of the high-frequency inverter to be 0, and respectively determining the capacitance value of the compensation capacitor at the transmitting side and the capacitance value of the compensation capacitor at the receiving side based on the self-inductance value of each of the plurality of coupling coils and the mutual inductance value between the plurality of coupling coils.
It should be noted that, in order to meet the high-power output requirement of the wireless power transmission system, reduce the higher electrical stress on the coupling coil of the wireless power transmission system and reduce the size of a single coupling coil, a series-series compensation wireless power transmission system is provided, and the existing single wireless power transmission system can be fully utilized to realize modular high-power output. However, the adverse effect of the same-side magnetic coupling of the coupling coils on the efficacy characteristics needs to be solved when the plurality of wireless power transmission modules are connected in parallel, and the mutual inductance between the coupling coils caused by the parallel connection of the same-side magnetic coupling to the plurality of wireless power transmission modules needs to be eliminated through parameter setting of the compensation network.
As an example of one possible implementation, L is shown in FIG. 1 p1 Is the self-inductance of the transmitting side of the first coupling coil 103, and L s1 Is the self-inductance of the receiving side of the first coupling coil 103, L p2 Is the self-inductance of the transmitting side of the second coupling coil 108, L s2 For self-inductance of the receiving side of the second coupling coil 108, M p1s1 Is L p1 And L s1 Main coupling mutual inductance of, M p2s2 Is L p2 And L s2 Main coupling mutual inductance of, M p1p2 Is L p1 And L p2 Same side coupling mutual inductance of M s1s2 Is L s1 And L s2 Same side coupling mutual inductance of M p1s2 Is L p1 And L s2 Cross-coupling mutual inductance of, M p2s1 Is L p2 And L s1 Cross-coupling mutual inductance.
The compensation network parameter configuration has three functions, namely, ensuring that the equivalent output impedance of the first high-frequency inverter 101 and the second high-frequency inverter 106 is pure resistance, and supplementingThe reactive power is compensated, and the same-side magnetic coupling M of the two series-series compensation wireless electric energy transmission systems is eliminated p1p2 And M s1s2 Influence on system characteristics. The traditional compensation network parameter configuration method only compensates the self-inductance of the coupling coil without considering the same-side magnetic coupling M p1p2 And M s1s2 The equivalent output impedance of the first high-frequency inverter 101 and the second high-frequency inverter 106 is not purely resistive, and thus the system cannot be operated in a resonance state. The present invention obtains the following equation by obtaining the output impedances of the first high-frequency inverter 101 and the second high-frequency inverter 106 considering the magnetic coupling on the same side and making the imaginary part of the output impedance zero:
wherein, U i1 And U i2 Respectively, the output voltage of the inverter, I p1 And I p2 Respectively, the output current of the inverter, imag () represents the imaginary part, omega is the resonance angular frequency, the unit is rad/s, j is the imaginary unit, C p1 Compensating the capacitance of the capacitor for the first transmit side, C s1 Compensating the capacitance of the capacitor for the first receiving side, C p2 Capacitance value of second transmitting side compensation capacitor, C s2 The capacitance value of the capacitance is compensated for the second receiving side.
Obtaining C by solving the formula (1) p1 、C s1 、C p2 And C s2 The parameter configuration method of (2):
in the above solutions, since the imaginary parts of the output impedances of the first high-frequency inverter 101 and the second high-frequency inverter 106 are zero, the output impedances of the inverters are pure resistive, there is no inductive or capacitive reactive power, and the same-side magnetic coupling M is eliminated p1p2 And M s1s2 Influence on system characteristics.
In accordance with the present applicationIn the parameter configuration method of the series-series compensation wireless power transmission system, after the influence of magnetic coupling on the same side is considered, the imaginary parts of the output impedance of the inverter and the series-series compensation wireless power transmission system are zero, so the output impedance is pure resistance; in addition, consider the same-side coupling mutual inductance M p1p2 And M s1s2 The compensation network parameter configuration compensates the reactive power in the system, namely, the system does not have inductive or capacitive reactive power at the moment, so that the output power and the transmission efficiency can be improved; in addition, the equivalent output impedance of the first high-frequency inverter and the second high-frequency inverter is pure resistance, and the switching tubes forming the inverters can realize zero-loss switching, namely, soft switching of the inverters is easy to realize at the moment.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A series-series type compensation wireless power transmission system, comprising a plurality of wireless power transmission modules connected in parallel, each of the plurality of wireless power transmission modules comprising a high frequency inverter, a transmission side compensation module, a reception side compensation module, a coupling coil and a rectifier, wherein,
the input ends of the plurality of high-frequency inverters are connected in parallel;
the output ends of the plurality of rectifiers are connected in parallel;
the output end of each high-frequency inverter is connected with the input end of a coupling coil of the same wireless power transmission module, and the output end of each coupling coil is connected with the input end of a rectifier of the same wireless power transmission module;
a compensation module is connected on a line between the output end of each high-frequency inverter and the input end of the coupling coil of the same wireless power transmission module;
and a compensation module is connected on a line between the output end of each coupling coil and the corresponding input end of the rectifier.
2. The system of claim 1, wherein the plurality of coupling coils are arranged in close proximity.
3. The system of claim 1, wherein the output of each high frequency inverter comprises a first output of the high frequency inverter and a second output of the high frequency inverter, wherein each transmit side compensation module comprises a transmit side compensation capacitor, wherein the input of each coupling coil comprises a first input of the coupling coil and a second input of the coupling coil, and wherein,
the first output end of each high-frequency inverter is connected with the first end of the first compensation capacitor of the same wireless power transmission module;
the second end of each first compensation capacitor is connected with the first input end of the coupling coil of the same wireless power transmission module;
and the second output end of each high-frequency inverter is connected with the second input end of the coupling coil of the same wireless power transmission module.
4. The system of claim 3, wherein each of the high frequency inverters comprises two inverter leg, each of the inverter leg comprises two inverter sub-modules, each of the inverter sub-modules comprises a switch tube and a diode, wherein,
the input ends of the plurality of high-frequency inverters are connected in parallel;
the two inverter bridge arms of the same wireless power transmission module are connected in parallel, the two inverter submodules of the same inverter bridge arm are connected in series, and the diodes of the same inverter submodules are connected with the switch tube in reverse parallel;
two ends of each inverter bridge arm are connected with two ends of a direct current power supply in parallel;
a first input end of each coupling coil is connected with a second end of the first compensation capacitor of the same wireless power transmission module, and a first end of each first compensation capacitor is connected to a line between two inversion submodules of one inversion bridge arm of the same wireless power transmission module through a line;
and the second input end of each coupling coil is connected to a line between two inversion submodules of the other inversion bridge arm of the same wireless power transmission module through a line.
5. The system of claim 1, wherein the output of each rectifier comprises a rectifier first input and a rectifier second input, wherein the receive-side compensation modules each comprise a receive-side compensation capacitor, wherein the output of each coupling coil comprises a coupling coil first output and a coupling coil second output, and wherein,
a first output end of each coupling coil is connected with a first end of the second compensation capacitor of the same wireless power transmission module;
the second end of each second compensation capacitor is connected with the first input end of the rectifier of the same wireless power transmission module;
and the second output end of each coupling coil is connected with the second input end of the rectifier of the same wireless power transmission module.
6. The system of claim 5, wherein each of the rectifiers comprises a rectifier bridge, wherein,
the output ends of the plurality of high-frequency inverters are connected in parallel;
a first output end of each coupling coil is connected with a first end of the second compensation capacitor of the same wireless power transmission module;
the second end of each second compensation capacitor is connected with the first input end of the rectifier bridge of the same wireless power transmission module;
and the second output end of each coupling coil is connected with the second input end of the rectifier bridge of the same wireless power transmission module.
7. The system of claim 6, wherein each of the rectifiers further comprises an energy storage capacitor, wherein,
the first end of each energy storage capacitor is connected with the first output end of the rectifier bridge of the same rectifier;
and the second end of each energy storage capacitor is connected with the second output end of the rectifier bridge of the same rectifier.
8. A parameter configuration method applied to the series-series compensation wireless power transmission system of any one of claims 1 to 7, comprising:
establishing a calculation relation of each high-frequency inverter impedance based on the output voltage of each high-frequency inverter and the output current of each high-frequency inverter;
acquiring an imaginary part of the impedance of the high-frequency inverter based on the impedance calculation relation;
acquiring self-inductance values of the plurality of coupling coils and mutual inductance values among the plurality of coupling coils;
setting the imaginary part of the high-frequency inverter impedance to be 0, and respectively determining the capacitance value of the transmitting side compensation capacitor and the capacitance value of the receiving side compensation capacitor based on the obtained self-inductance values of the plurality of coupling coils and the mutual inductance values among the plurality of coupling coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211475317.1A CN115940437A (en) | 2022-11-23 | 2022-11-23 | Series-series compensation wireless power transmission system and parameter configuration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211475317.1A CN115940437A (en) | 2022-11-23 | 2022-11-23 | Series-series compensation wireless power transmission system and parameter configuration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115940437A true CN115940437A (en) | 2023-04-07 |
Family
ID=86648136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211475317.1A Pending CN115940437A (en) | 2022-11-23 | 2022-11-23 | Series-series compensation wireless power transmission system and parameter configuration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115940437A (en) |
-
2022
- 2022-11-23 CN CN202211475317.1A patent/CN115940437A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109428490B (en) | Multi-cell power conversion system | |
| US11394344B2 (en) | Roof mounted photovoltaic system and method for wireless transfer of electrical energy | |
| CN103560593B (en) | A kind of control method of field coupled type radio energy transmission system | |
| CN103779973A (en) | Wireless power transmission system, and inductor used in wireless power transmission system | |
| CN111030314A (en) | Carrier rocket ground high-power wireless power supply system based on electromagnetic resonance | |
| CN113162167B (en) | Wireless charging system with constant-current and constant-voltage automatic switching function | |
| CN110048496A (en) | A kind of low-cost wireless method of electric energy transfer and device | |
| CN113962179A (en) | Method and device for optimizing multi-relay coil coupling structure of remote WPT system | |
| US20190319463A1 (en) | Energy balancing circuit and energy balancing apparatus | |
| CN114598163A (en) | Three-phase LCL-DAB direct current converter topology and control method thereof | |
| CN112003387B (en) | Constant voltage constant current wireless charging system based on improved S/S compensation network | |
| CN112821575B (en) | Wireless power transmission device with switchable compensation capacitors and switching control method | |
| CN112803611A (en) | Wireless energy transmission system | |
| CN115940437A (en) | Series-series compensation wireless power transmission system and parameter configuration method | |
| CN219499050U (en) | Series-series compensation wireless power transmission system | |
| CN110797991A (en) | kW-level power wireless electric energy transmission system based on relay converter | |
| CN112737021B (en) | Load irrelevant type wireless charging circuit based on Class-E circuit and control method | |
| CN115912677A (en) | Double-resonance topology with constant-current and constant-voltage output characteristics and parameter design method thereof | |
| CN107994686B (en) | Multi-load inductive coupling power transmission device | |
| CN114552800A (en) | Magnetic resonance wireless power transmission system with receiving end high-order LC compensation | |
| CN214675142U (en) | Connecting circuit of power line carrier decoupling network | |
| CN219268566U (en) | Wireless charging power expansion system | |
| CN108306419B (en) | Electric field type wireless power transmission system with multi-transmitting single-receiving structure | |
| CN210577958U (en) | Radio energy transmitting power supply device with several kilowatt level | |
| CN209692434U (en) | A kind of low-cost wireless power transfer with voltage regulation function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |