一种可实时跟踪的双向无线充电系统互感识别方法
By sampling the real-time voltage decomposition of the resonant capacitor and the compensation capacitor, and combining the Thevenin equivalent principle and the bandpass filter, the mutual inductance parameters are estimated in real time, which solves the problem that the mutual inductance parameters cannot be tracked in real time in the bidirectional magnetic induction wireless charging system, and improves the transmission efficiency and security of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN INST OF METROLOGY & TEST
- Filing Date
- 2022-11-21
- Publication Date
- 2026-07-17
AI Technical Summary
In existing bidirectional magnetic induction wireless charging systems, the mutual inductance parameters cannot be tracked in real time during electric vehicle charging, which affects transmission efficiency and safety, especially during dynamic charging when the mutual inductance parameters of the coupling coil change drastically.
By decomposing the real-time voltages of the sampled resonant capacitor and the compensation capacitor, the coil induced voltage is obtained. Combined with the Thevenin equivalent principle and a bandpass filter, the mutual inductance parameters are estimated in real time, enabling accurate identification of the mutual inductance.
It achieves an accuracy of less than 3% in mutual inductance identification and can track changes in mutual inductance in real time during operation, thereby improving the stability and security of the system.
Smart Images
Figure CN116073528B_ABST