Abstract：In the process of inductive power transfer (IPT), the secondary impedance changes due to changing operation conditions or other environmental factors, which also causes the change of equivalent impedance in the primary side. This leads to the deviation of resonance and soft-switching condition and requires higher capacity of the power supplyin the primary side. To solve the problem, aminimum voltage tracking based receiver's resonant frequency tracking technique is employed in the IPT system. This approach adopts real-time detection of the DC-DC output voltage and the operating frequency of the inverter to restore resonance of the primary circuit by constantly tracking the minimum DC-DC output voltage. The experimental result shows the validity of the proposed approach. It has been shown that the proposed approach lowers system capacity and helps to achieve soft-switching conditionin the primary side.
马晓晴, 麦瑞坤, 陆立文, 李勇. 一种最小电压跟踪的感应电能传输系统调频调谐方法[J]. 电工技术学报, 2016, 31(增刊): 32-38.
Ma Xiaoqing, Mai Ruikun, Lu Liwen, Li Yong. A Minimum Voltage Tracking Based Receiver's Resonant Frequency Tracking Technique for Inductive Power Transfer Systems. Transactions of China Electrotechnical Society, 2016, 31(增刊): 32-38.
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