1. Control method of magnetic resonant WPT maintaining stable transmission power with wide misalignment tolerance
- Author
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Zhao Jinbo, Ma Siyuan, Jie He, Xiong Qiaopo, Yang Miao, Long Gen, Tao Cai, Heng Wang, Song Chao, Luo Cheng, Hongsheng Hu, and Zhao Xiaobo
- Subjects
frequency splitting phenomenon ,high misalignment tolerance ,approximately constant voltage gain ,Energy Engineering and Power Technology ,wide misalignment tolerance ,magnetic resonant WPT control method ,frequency splitting point ,law.invention ,magnetic resonance ,Point tracking ,wireless power transmission ,law ,Control theory ,inductive power transmission ,Wireless ,Constant voltage ,stable transmission power ,Transformer ,Physics ,Power transmission ,DC–DC transmission efficiency ,complex ratio transformer model ,frequency splitting characteristics ,business.industry ,General Engineering ,transformers ,Experimental validation ,constant output power ,lcsh:TA1-2040 ,general mutual model ,power transmission process ,lcsh:Engineering (General). Civil engineering (General) ,business ,Software ,Control methods ,Voltage - Abstract
Many applications of wireless power transmission (WPT) require high misalignment tolerance. However, the transmission power of WPT is highly susceptible to the misalignment. To solve this problem, the magnetic resonant WPT control method with high misalignment tolerance is proposed here. First, based on the general mutual model, the complex ratio transformer model is established. This model gives an intuitive physical picture in power transmission process and frequency splitting phenomenon. Second, approximately constant voltage gain at frequency splitting point in a wide range of misalignment is analysed. Considering this frequency splitting characteristics of Magnetic resonant WPT, the maximum peak point tracking control methods for wide misalignment, maintaining constant output power is proposed. Finally, the corresponding simulation and experimental validation is given, demonstrating the feasibility of the control method. When the misalignment reached 40%, the fluctuation of the output voltage will be
- Published
- 2019
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