Yanhua Guo, Shuyao Sun, Zhuoqun Shi, Weize Sun, Yanjin Hou, Zhizhen Liu

BP-Adaptive PID Regulation for Constant Current and Voltage Control in WPT Systems

  • Automotive Engineering

To enhance the stability and disturbance rejection of wireless charging systems for electric vehicles, we designed a bilateral collaborative control strategy based on BP neural networks, achieving closed-loop constant voltage control for the secondary rectification circuit. Integrating BP neural network adaptive PID parameters with dual-phase-shift control, this strategy outperforms conventional incremental PID controllers in terms of response time and overshoot. Validated on an 11 kW experimental platform, our approach demonstrated efficient response under disturbances; with a load switch from 10 Ω to 12 Ω, the system exhibited a mere 5% fluctuation rate and an impressive efficiency of up to 92.96%.

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