TY - GEN
T1 - Analysis of Minimum Power Loss in Series-Series Compensated Wireless Power Transfer System under ZVS Conditions
AU - Jiang, Yongbin
AU - Zhao, Chenxu
AU - Li, Ruibang
AU - Liu, Yonghui
AU - Yang, Chengzi
AU - Wang, Laili
AU - Wang, Yue
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/29
Y1 - 2020/11/29
N2 - Tight voltage/current regulation and high efficiency are fundamental objectives of wireless power transfer systems (WPTSs) as power supplies. Although the well-established impedance matching control attempts to achieve high efficiency, the associated extra dc-dc converters or hard switching in WPTSs reduce the overall system efficiency, particularly for high-power applications. Commonly, achieving ZVS of all switches is an effective way to improve the transfer efficiency in a WPTS. In this paper, under ZVS conditions of all switches, the distribution of the system power loss is investigated and the optimal operating point with the minimum power loss is derived through detailed power loss analysis. A 500-W experimental prototype has been built to verify the correctness of derivation. With a coupling coefficient k of 0.2 or 0.15, the maximum transfer efficiency of the whole system can reach 96.8% or 95.0% under the power rating of 288W (rated load) as well as 92.4% or 88.7% in the case of light load (9% of 288W).
AB - Tight voltage/current regulation and high efficiency are fundamental objectives of wireless power transfer systems (WPTSs) as power supplies. Although the well-established impedance matching control attempts to achieve high efficiency, the associated extra dc-dc converters or hard switching in WPTSs reduce the overall system efficiency, particularly for high-power applications. Commonly, achieving ZVS of all switches is an effective way to improve the transfer efficiency in a WPTS. In this paper, under ZVS conditions of all switches, the distribution of the system power loss is investigated and the optimal operating point with the minimum power loss is derived through detailed power loss analysis. A 500-W experimental prototype has been built to verify the correctness of derivation. With a coupling coefficient k of 0.2 or 0.15, the maximum transfer efficiency of the whole system can reach 96.8% or 95.0% under the power rating of 288W (rated load) as well as 92.4% or 88.7% in the case of light load (9% of 288W).
KW - High efficiency
KW - power loss analysis
KW - wireless power transfer system (WPTS)
KW - zero voltage switching (ZVS)
UR - https://www.scopus.com/pages/publications/85097183369
U2 - 10.1109/IPEMC-ECCEAsia48364.2020.9368159
DO - 10.1109/IPEMC-ECCEAsia48364.2020.9368159
M3 - 会议稿件
AN - SCOPUS:85097183369
T3 - 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
SP - 2961
EP - 2968
BT - 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
Y2 - 29 November 2020 through 2 December 2020
ER -