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Parameter optimization method of EC-WPT system based on complementary symmetrical LCC resonant network

A technology of resonant network and system parameters, applied in circuit devices, electrical components, etc., can solve the problems of system stability impact, unfavorable practical application, increase in inductance loss, etc., and achieve the effect of optimal system comprehensive performance.

Active Publication Date: 2018-12-14
CHONGQING UNIV
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Problems solved by technology

However, the system is a high-order system and operates at a high operating frequency of 1MHz, which increases electromagnetic interference, and the inductance value is greatly affected by external factors, resulting in a decrease in system robustness
At the same time, the inductance of hundreds of microhenries increases the volume of the system and increases the inductance loss.
Through the simulation, it can be seen that the superposition of each parameter error of the high-order system will have a serious impact on the stability of the system, which is not conducive to practical application

Method used

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  • Parameter optimization method of EC-WPT system based on complementary symmetrical LCC resonant network
  • Parameter optimization method of EC-WPT system based on complementary symmetrical LCC resonant network
  • Parameter optimization method of EC-WPT system based on complementary symmetrical LCC resonant network

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[0046] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] Such as figure 1 and figure 2 As shown, the EC-WPT system of the so-called complementary symmetrical LCC resonant network, the energy transmitting end is first input from the DC power supply to the S 1 -S 4 The high-frequency inverter circuit formed (or the power-frequency AC input from the power grid is rectified and then input to the high-frequency inverter circuit), converts the DC power into a high-frequency AC output, and provides it to the emitter plate after passing through the LC network. The plate and the receiving plate generate a displacement current under the action of the alternating electric field, which realizes the energy transmission from the emitting plate to the receiving plate. By introducing a reverse LC network at the energy receivin...

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Abstract

The invention provides a parameter optimization method of EC-WPT system based on complementary symmetrical LCC resonant network At first, that initial value E of the input voltage, the equivalent capacitance Cs of the couple mechanism and the load resistance RL are determined according to the application situation; Then, the system efficiency Eta is taken as the objective function, and the variables f and k are taken as the parameters to be optimized to initialize the population. Then, the optimal solutions of f and k are obtained by combining the adaptive genetic algorithm with nonlinear programming when the system efficiency Eta maximizes. At last, whet that system meets the demand of output power is judged, if not, the input voltage E is adjusted and the system is optimized again; If so, all parameters of the system are given. The effect is: using this method to optimize the parameters of the system, under the constraints of ZPA, low excitation voltage, small compensation inductanceand transmission distance, the optimal parameters of the system transmission power are obtained, and the optimal comprehensive performance of the system is achieved.

Description

technical field [0001] The invention relates to wireless energy transmission technology, in particular to an EC-WPT system parameter optimization method of a complementary symmetrical LCC resonant network. Background technique [0002] Wireless Power Transfer (WPT) technology is a technology that comprehensively utilizes power electronics technology and modern control theory to realize wireless power transmission through soft media. This technology has become a research hotspot at home and abroad. The World Economic Forum (WEF ) has also listed wireless power transfer technology as one of the top ten emerging technologies that have the greatest impact on the world and are most likely to provide answers to global challenges for two consecutive years. It solves various problems caused by the direct electrical contact of traditional wires, and has broad application prospects. Among them, the research on Magnetic-field Coupled Wireless Power Transfer (MC-WPT) technology is the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/05
CPCH02J50/05
Inventor 苏玉刚吴学颖孙跃戴欣王智慧朱婉婷唐春森
Owner CHONGQING UNIV
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