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Same-side decoupling method for fixed-phase-difference modular wireless charging system

A technology of wireless charging and phasing, applied in the field of decoupling on the same side, can solve problems such as output control, achieve the effect of optimizing real power and eliminating reactive power flow

Active Publication Date: 2020-12-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Modular wireless energy transfer technology is conducive to breaking through the limitations of traditional single-channel wireless charging, but due to the complex cross-coupling between different modules, it is difficult to control the output of one of the modules independently, so there is no practical application at present.

Method used

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  • Same-side decoupling method for fixed-phase-difference modular wireless charging system

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Embodiment Construction

[0026] A same-side decoupling method applicable to a fixed phase difference modular wireless charging system of the present invention, said fixed phase difference modular wireless charging system contains several wireless charging modules, each module includes a transmitting coil, a receiving The coil and a set of independent primary and secondary circuits and corresponding control loops, and the phase difference of the fundamental wave input voltage of the transmitting coils of different modules is 0° or 180°, for a system containing n modules, the same side (including The decoupling method of the primary side and the secondary side) is as follows: For the traditional compensation network in which both the primary side and the secondary side are connected in series, an additional capacitor or an additional inductance is connected in series on the basis of the full compensation capacitor of each circuit, and the additional capacitance or inductance value The calculation method ...

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Abstract

The invention discloses a same-side decoupling method suitable for a fixed phase difference modular wireless charging system. The fixed phase difference modular wireless charging system comprises a plurality of wireless charging modules, each module comprises a transmitting coil, a receiving coil, a set of independent primary side and secondary side circuits and a control loop of the module, phasedifference of fundamental wave input voltages of transmitting coils of different modules is 0 degree or 180 degrees, and decoupling of the same side (including a primary side and a secondary side) ofthe modular system can be achieved by adding additional compensation capacitance(or inductance) obtained through calculation into the primary and secondary side circuits of each module. The method isadvantaged in that same-side decoupling can be carried out on any multiple fixed phase difference wireless charging modules, and universality of the method is not affected by placement positions anddistances between different modules. According to the method, the same-side decoupling of the modular system can be realized by adding the calculated additional compensation capacitance into the primary side circuit and the secondary side circuit of each module.

Description

technical field [0001] The invention belongs to the technical field of wireless charging, and relates to a same-side decoupling method suitable for a fixed phase difference modular wireless charging system. Background technique [0002] With the increasingly serious problems of energy shortage and environmental pollution worldwide, the importance of developing electric vehicles has become increasingly prominent. Wireless charging technology for electric vehicles has attracted much attention due to its advantages of high efficiency, convenience, low maintenance cost, and no environmental impact. Although the current low-power wireless charging technology has been developed to a certain extent, high-power wireless fast charging is still under study. Modular wireless energy transfer technology is conducive to breaking through the limitations of traditional single-channel wireless charging, but due to the complex cross-coupling between different modules, it is difficult to cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/10
CPCH02J50/10
Inventor 钟文兴徐德鸿朱晨李豪
Owner ZHEJIANG UNIV
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