TY - GEN
T1 - A wireless power transfer system with robust primary-sided current based on the self-excited inverter
AU - Wang, Yao
AU - Liu, Weiguo
AU - Huangfu, Yigeng
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/2
Y1 - 2019/2
N2 - In this paper, a self-excited inverter is utilized to construct the inversion stage of the wireless power transfer (WPT) system without the PWM generator and digital signal processor, which could dramatically simplify the hardware structure. Meantime, soft-switching and automatic frequency tracking could be achieved without additional strategies which also decrease the complexity in control. Generally, in a WPT system, the current of primary-sided coils is expected to be kept constant despite the variation of load, which is helpful to achieve the constant voltage (CV) or constant current (CC) output of the WPT system. Accordingly, the parallel-series (PS) resonance topology is utilized to achieve the high robustness of the primary-sided current without additional compensation networks. The analysis and design procedure for the WPT system are provided and a low-power prototype is built. The simulation and experimental results validate the design of the WPT system. When the load resistor changes from 30Ω to 10 Ω, the fluctuation of primary-sided current is only 4.3%, and a dc-dc transfer efficiency of 85.82% with a 9-cm distance and 73.16-W output power is reached.
AB - In this paper, a self-excited inverter is utilized to construct the inversion stage of the wireless power transfer (WPT) system without the PWM generator and digital signal processor, which could dramatically simplify the hardware structure. Meantime, soft-switching and automatic frequency tracking could be achieved without additional strategies which also decrease the complexity in control. Generally, in a WPT system, the current of primary-sided coils is expected to be kept constant despite the variation of load, which is helpful to achieve the constant voltage (CV) or constant current (CC) output of the WPT system. Accordingly, the parallel-series (PS) resonance topology is utilized to achieve the high robustness of the primary-sided current without additional compensation networks. The analysis and design procedure for the WPT system are provided and a low-power prototype is built. The simulation and experimental results validate the design of the WPT system. When the load resistor changes from 30Ω to 10 Ω, the fluctuation of primary-sided current is only 4.3%, and a dc-dc transfer efficiency of 85.82% with a 9-cm distance and 73.16-W output power is reached.
KW - Automatic frequency tracking
KW - Parallel-series topology
KW - Self-excited inverter
KW - Wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=85069045936&partnerID=8YFLogxK
U2 - 10.1109/ICIT.2019.8755044
DO - 10.1109/ICIT.2019.8755044
M3 - 会议稿件
AN - SCOPUS:85069045936
T3 - Proceedings of the IEEE International Conference on Industrial Technology
SP - 378
EP - 383
BT - Proceedings - 2019 IEEE International Conference on Industrial Technology, ICIT 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Industrial Technology, ICIT 2019
Y2 - 13 February 2019 through 15 February 2019
ER -