期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 35, 期 5, 页码 4915-4924出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2019.2946778
关键词
Topology; Couplings; Fluctuations; Power generation; Impedance; Switches; Capacitors; Inductive power transfer (IPT); large coupling variation; reconfigurable topology; stable transmission power
资金
- National Key Research and Development Program of China [2017YFB1201002]
- National Natural Science Foundation of China [51977184]
- Applied Basic Research Programs of Science and Technology Commission Foundation of Sichuan Province [2018JY0586]
- State Scholarship Fund of China Scholarship Council [201807000025]
- Cultivation Program for the Excellent Doctoral Dissertation of Southwest Jiaotong University [2016310066]
Coupling variations in inductive power transfer (IPT) systems are almost inevitable, which results in unstable transmission power. In order to withstand the coupling variation for an IPT system with stable transmission power, a new approach based on reconfigurable compensation topology is proposed. The basic principle is to create two transfer power-coupling coefficient (P& x2013;k) curves of two compensation topologies. A switch is utilized to alter one topology to the other topology for the IPT system so that the system can operate within the top regions of the P& x2013;k curves of the reconfigurable topology. First, the P& x2013;k curve of the detuned series & x2013;series (SS) topology is elaborated. Then, the reconfigurable topology is proposed based on the equivalent detuned SS topology, and followed by the parameter design method. Finally, a 400-W prototype is built to verify the validity of the proposed approach. With coupling coefficient variation ranging from 0.1 to 0.25, the transmission power fluctuation of the proposed topology is only 5 & x0025; with efficiency climbing from 85.8 & x0025; to 91.7 & x0025;.
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