磁耦合谐振式无线电能传输零相位控制等比法
乐凯军，夏俊，李祥，李鑫卓
（华南理工大学 电力学院，广东 广州 510640）
摘 要：传统的零相位方式不能精确地调整频率，同时不对称系统的分裂频率侧方程又不能以一种完整的形式表达，提出一种对分裂频率和零相位方法之间关系分析的新方法。基于两线圈结构，推出了全状态最优点的数值表达式, 并比较了最优点和零相位点, 结果表明这两点有显著的偏差。在零相位方法中通过使用适当的比率可减小这种偏差并获得同理想对称系统一样的更好的输出特性，实验验证了该方法的可行性。
关键词：磁耦合无线电能传输；零相位控制；频率分裂；等比率
中图分类号：TM153 文献标识码：A 文章编号：1007-3175(2019)01-0010-04
Equal Ratio Method on Zero-Phase Control of Magnetic Coupling Resonant Mode Wireless Power Transmission
YUE Kai-jun, XIA Jun, LI Xiang, LI Xin-zhuo
（School of Electric Power, South China University of Technology, Guangzhou 510640, China）
Abstract: As the traditional zero-phase control cannot tune the frequency precisely and the ridge equation in unsymmetrical system cannot be derived for the complex equation, this paper presented a kind of new analysis method that yielded critical insight into the relationship between the splitting frequencies and zero-phase. Based on two-coil structure, this paper deduced a full state mathematical expression of optimal points and compared the optimal points with the zero-phase points.The result shows that there is a remarkable deviation between an optimal resonant point and a zero-phase point.Using the appropriate ratio in zero-phase method can eliminate this deviation and get a better output performance like an ideal symmetrical system.The experiment verifies the feasibility of this method.
Key words: magnetic coupling resonant wireless power transmission; zero-phase control; frequency splitting; equal ratio
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