Analysis and Design of High-Misalignment-Tolerant Compensation Topologies With Constant-Current or Constant-Voltage Output for IPT Systems
Jianwei Mai, Yijie Wang, Yousu Yao, Dianguo Xu
Abstract
The capability of misalignment tolerance is vital for an inductive power transfer system. The conditions satisfied by the high-misalignment-tolerant compensation topology are proposed in the article. It is proven that all compensation topologies with secondary parallel compensation component have a strong capability of misalignment tolerance if the parameters of the compensation circuit are properly designed. And, their misalignment-tolerant capability was analyzed. The impedance characteristics of the simple S/T compensation topology are analyzed. Two prototypes of approximately 300 W used S/SP (primary series, secondary series-parallel) compensation topology with strong misalignment tolerance were designed to verify the system performance. They have the characteristics of constant-voltage and constant-current output, respectively.