Abstract

Inductively coupled wireless power transmission (ICWPT) technology applied in rail transit can be divided into two modes: single inverter power supply(PS) for one segment (single-ended PS) and double inverters power supply from two ends(double-ended PS). In this paper, firstly, the power characteristics of the double-ended PS system are analyzed, and the theoretical deduction shows that the output power of the two inverters can be balanced distributed according to the feeder length of the two inverters. Secondly, the influence of the output voltage with phase difference is analyzed. It is theoretically deduced that when the driving phase of the two inverters is different, the equivalent output voltage of the inverters will decrease with the increase of the phase difference. Finally, the following are verified in this paper: (1) Self-balance power characteristics of double-ended PS system; (2) The output voltage of the system decreases with the increase of phase difference. Synchronization control is needed to ensure efficient and stable operation of the system.

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