TY - GEN
T1 - A primary-sided CLC compensated wireless power transfer system based on the class D amplifier
AU - Wang, Yao
AU - Liu, Weiguo
AU - Huangfu, Yigeng
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/26
Y1 - 2018/12/26
N2 - In order to reduce the complexity of the high-frequency AC power supply of the wireless power transfer (WPT) system in small and medium power applications, the class D amplifier is adopted in this paper. The class D amplifier, which has fewer components than traditional full-bridge and half-bridge inverter, simplifies the structure of the WPT system and can realize the zero-voltage turn-on of MOSFETs. Meantime, a primary-sided CLC compensation network is proposed to achieve load-independent constant voltage output of the WPT system. The analysis and design procedure for the WPT system are provided and a prototype is built. Simulation results validate the load-independent voltage output characteristic of the circuit topology. Experiment is executed at a transfer distance of 10cm and the results show that when the load resistor changes by 233% from 15Ω to 50Ω, the output voltage only fluctuates by 2.6V from 33.2V to 35.8V. The fluctuation rate is only 7.8%, which indicates that the output voltage of the WPT system is robust to the load variation. With a load resistor of 25Ω, the experimental prototype reaches a dc-dc efficiency of 87.57% at 48.16-W output power.
AB - In order to reduce the complexity of the high-frequency AC power supply of the wireless power transfer (WPT) system in small and medium power applications, the class D amplifier is adopted in this paper. The class D amplifier, which has fewer components than traditional full-bridge and half-bridge inverter, simplifies the structure of the WPT system and can realize the zero-voltage turn-on of MOSFETs. Meantime, a primary-sided CLC compensation network is proposed to achieve load-independent constant voltage output of the WPT system. The analysis and design procedure for the WPT system are provided and a prototype is built. Simulation results validate the load-independent voltage output characteristic of the circuit topology. Experiment is executed at a transfer distance of 10cm and the results show that when the load resistor changes by 233% from 15Ω to 50Ω, the output voltage only fluctuates by 2.6V from 33.2V to 35.8V. The fluctuation rate is only 7.8%, which indicates that the output voltage of the WPT system is robust to the load variation. With a load resistor of 25Ω, the experimental prototype reaches a dc-dc efficiency of 87.57% at 48.16-W output power.
KW - Class D amplifier
KW - Load-independent constant voltage output
KW - Soft-switching technology
KW - Wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=85061553652&partnerID=8YFLogxK
U2 - 10.1109/IECON.2018.8591707
DO - 10.1109/IECON.2018.8591707
M3 - 会议稿件
AN - SCOPUS:85061553652
T3 - Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
SP - 943
EP - 947
BT - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018
Y2 - 20 October 2018 through 23 October 2018
ER -