多负载磁耦合谐振无线电能传输系统功效分析与优化

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Abstract In order to solve the problems of low efficiency and uneven power distribution of the magnetic coupling resonance wireless power transmission system (WPT) under multiple loads, this paper analyzes influence of voltage at both ends of each load on power and efficiency by establishing the equivalent circuit model of the multi-load system and carrying out theoretical derivation. A numerical optimization method for power distribution and efficiency maximization is proposed. By analyzing the equivalent circuit, the expression of the total efficiency of the system is determined and taken as the objective function. A control strategy of particle swarm optimization (PSO) algorithm is used to search for the maximum efficiency by taking the rated power of each receiving end of the system as constraints. Finally, a simulation model is built to verify the effectiveness of the control method.

Key words： magnetic coupling resonance wireless power transfer (WPT) multi-load system particle swarm optimization (PSO)

Received: 29 October 2021

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	CHEN Xiaoping
	LIU Yan

Cite this article:

CHEN Xiaoping,LIU Yan. Efficiency analysis and optimization of multi-load magnetic coupling resonance wireless power transfer system[J]. Electrical Engineering, 2022, 23(4): 37-41.

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http://dqjs.cesmedia.cn/EN/Y2022/V23/I4/37

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