Abstract The current-fed inductively power transfer (IPT) system, aiming at the Output- Voltage-instability problem on a dynamic load, based on the constant transimpedance gain characteristics of the primary side control method is proposed. Taking current-fed IPT system with parallel-primary and parallel-secondary (PP) compensate as an object, by building and analyzing the mutual inductance equivalent circuit, had the characteristics of constant-transimpedance-gain under certain working conditions are derivated. And the efficiency characteristics of PP compensated resonant network are analyzed, optimization of resonant network parameters make the system constant- transimpedance-gain frequency for the efficiency of the optimal frequency. In order to maintain the constant input bus current, the constant-current control system is added in the traditional current-fed IPT topology, and the principle of constant-current control is described. This paper gave design steps based on the novel control method under given conditions. Finally, designed a 80W prototype, the experimental results are in good agreement with the theoretical analysis and the correctness of the circuit topology and control strategy is verified.
Kan Chaohao,Zhu Xiaowei,Cheng Yuan. Research on Novel Constant-voltage Output Control Method for Current-fed IPT System[J]. Electrical Engineering, 2016, 17(11): 78-82.
[1] Ahn D, Hong S. A study on magnetic field repeater in wireless power transfer[J]. IEEE Trans. on Industrial Electronics, 2013, 60(1): 360-371. [2] Jang Y, Jovanovic MM. A contactless electrical energy transmission system for protable-telephone battery chargers[J]. IEEE Trans.on Industrial Electronics, 2003, 50(3): 520-527. [3] Chen C, Wong SC, Tse CK, et al. Analysis, design and control of a transcutaneous power regular for artificial heart[J]. IEEE Trans.on Biomedical Circuit and Systems, 2009, 3(1): 23-31. [4] 杨庆新. 无线电能传输技术及其应用[M]. 北京: 机械工业出版社, 2014: 160-179. [5] 曹玲玲, 陈乾宏, 任小永, 等. 电动汽车高效率无线充电技术的研究进展[J]. 电工技术学报, 2012, 27(8): 1-13. [6] 杨民生, 王耀南. 感应耦合电能传输系统动态解谐传输功率控制[J]. 电机与控制学报, 2012, 16(1): 72-78. [7] Madawala UK, Thrimawithana DJ. New techique for inductive power transfer using a single controller[J]. IET Power Electronics, 2012, 5(2): 248-256. [8] 陈世杰, 顾亦磊, 吕征宇, 等. 适用于Buck电路的一种改进型软开关实现方法[J]. 电力电子技术, 2004, 38(4): 8-10. [9] 黄剑峰, 马皓. Buck与推挽级联式DC/DC变换器的研究[J]. 电力电子技术, 2008, 42(6): 30-32. [10] 韩洪豆, 曲小惠. 基于恒流源补偿网络的电磁感应式非接触电能传输的LED驱动电路[J]. 中国电机工程学报, 2015, 35(20): 86-92. [11] Su Yp, Liu Xun, Hui S. y. ron. Mutual inductance calculation of movable planar coils on parallel surfaces[J]. IEEE Transactions on Power Electronics, 2009, 24(3/4): 1115-1123.