针对有轨电车非接触感应耦合电能传输系统的核心部分空心变压器空心线圈的选型进行分析和研究。首先对矩形空心线圈和圆形空心线圈的自感和互感进行计算，根据自感和互感计算出耦合系数。结合 Matlab软件编程计算，对比分析2种空心线圈的耦合性能随初、次级线圈间隙、线径、初、次级线圈尺寸、初、次级线圈相同及不同尺寸下偏移量变化的影响。结果表明：在尺寸较大时，随着气隙、导线截面半径、线圈尺寸以及初、次级线圈相同尺寸下偏移量的增大，矩形线圈耦合性能都好于圆形线圈。反之，圆形线圈的耦合性能要好于矩形线圈。虽然随着初、次级线圈不同尺寸下偏移量的增大，圆形线圈耦合性能略好于矩形线圈，但其耦合系数远小于相同尺寸下的耦合系数。结合有轨电车大功率、大尺寸的条件，得出有轨电车适合采用初、次级线圈相同尺寸的矩形线圈。%The paper makes the tram calculation firstly of rectangular and circular hollow coil self inductance and mutual inductance, and then calculates the coupling coefficient. Based on the programming calculation of Matlab software, it also makes a comparative analysis on the coupling performance of two types of hollow coils of the primary and secondary coil gap, coil diameter, primary and secondary coil size, identical and difference of primary and secondary coil sizes under the influence of offset changes. The results show that when the size is larger, with the increase of the air gap, the cross section radius of conductor wire, the size of the coil and the offset of the same size of the primary and secondary coils, the coupling performance of the rectangular coil is better than that of the circular coil, but the coupling coeffi cient of the circular coil is smaller than that of the rectangular coil. With the increase of offset of the primary and secondary coils, the coupling performance of the circular coil is slightly better than that of the rectangular coil, but its coupling coeffi cient is much smaller than that of the same size. Under the condition of the high power and large size of the tram, the paper concludes that the tram is suitable for rectangular coil with same size for the primary coil and the secondary coil.
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