磁耦合諧振式無線電能傳輸零相位控制等比法
樂凱軍，夏俊，李祥，李鑫卓
（華南理工大學 電力學院，廣東 廣州 510640）
摘 要：傳統的零相位方式不能精確地調整頻率，同時不對稱系統的分裂頻率側方程又不能以一種完整的形式表達，提出一種對分裂頻率和零相位方法之間關系分析的新方法。基于兩線圈結構，推出了全狀態最優點的數值表達式, 并比較了最優點和零相位點, 結果表明這兩點有顯著的偏差。在零相位方法中通過使用適當的比率可減小這種偏差并獲得同理想對稱系統一樣的更好的輸出特性，實驗驗證了該方法的可行性。
關鍵詞：磁耦合無線電能傳輸；零相位控制；頻率分裂；等比率
中圖分類號：TM153 文獻標識碼：A 文章編號：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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