volume | PIER Journals

Abstract

In the complex marine environment, the receiver is susceptible to the influence of water flow, which will cause the mutual inductance to fluctuate, thus affecting the stability of the output current. Therefore, aiming at the problem that the coil is prone to offset, this paper proposes a constant current charging output control method for wireless power transmission system based on parameter identification. Firstly, a method of mutual inductance parameter identification is introduced in detail. Only by measuring the effective value of the current at the transmitting end, the equivalent equation of mutual inductance and current can be established. Aiming at solving complex mathematical equations, the results of mutual inductance identification are obtained from high-order equations by combining with particle swarm optimization algorithm. Secondly, on this basis, a constant current control method for fast calculation of the conduction angle based on the above identification method is proposed. The calculation process of the conduction angle is derived, and the working principle of the constant current charging control is introduced in detail. Finally, this paper completed the construction of the experimental platform and carried out relevant experimental verification. The results show that the error of the parameter identification method proposed in this paper is within 3%, and the constant current output control of the system can be realized in the case of mutual inductance disturbance.

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Dr. Zhongjiu Zheng

Dr. Yanpeng Ma

Dr. Zhilong Wu

Dr. Xingfeng Cao

Dr. Qiangqiang Zhao

Dr. Jinjun Bai