CAJ | 학술논문

传统的感应电能传输(inductive power transfer，IPT)系统只含有单个逆变电源与单个初级线圈，由于受到功率器件的容量限制，较难满足轨道交通非接触供电等大功率应用的要求。为增加IPT系统的输出功率，该文构建了基于双初级线圈并绕的IPT系统，通过初级线圈产生磁场的叠加，实现IPT系统大功率输出。利用互感耦合理论对此系统进行详细分析，发现此结构不但需要补偿各初级线圈的自感，而且还需要额外电容补偿两初级线圈间的互感。研究表明，通过选择合适的额外补偿电容值，不仅能使各逆变器工作在谐振状态，还可以有效分配两逆变器的输出功率，达到合理分配两逆变器输出容量的目的。建立输出总功率为1.4 kW的实验系统，验证了两逆变器输出功率比为1：1和1：2的工况。这种基于双初级线圈并绕的IPT系统具有结构简单等优点，可望在轨道交通非接触供电系统等大功率场合中得到应用。
전통적감응전능전수(inductive power transfer，IPT)계통지함유단개역변전원여단개초급선권，유우수도공솔기건적용량한제，교난만족궤도교통비접촉공전등대공솔응용적요구。위증가IPT계통적수출공솔，해문구건료기우쌍초급선권병요적IPT계통，통과초급선권산생자장적첩가，실현IPT계통대공솔수출。이용호감우합이론대차계통진행상세분석，발현차결구불단수요보상각초급선권적자감，이차환수요액외전용보상량초급선권간적호감。연구표명，통과선택합괄적액외보상전용치，불부능사각역변기공작재해진상태，환가이유효분배량역변기적수출공솔，체도합리분배량역변기수출용량적목적。건립수출총공솔위1.4 kW적실험계통，험증료량역변기수출공솔비위1：1화1：2적공황。저충기우쌍초급선권병요적IPT계통구유결구간단등우점，가망재궤도교통비접촉공전계통등대공솔장합중득도응용。
The power capacity of the single-phase H-bridge inverter and single primary coil used in the traditional inductive power transfer (IPT) systems is limited by the constraint of the power electronic devices,so that it may not be able to meet the high-power requirement of rail transit applications. A novel IPT system with dual parallel wound primary coils is proposed in this paper to enhance the system’s power capacity, and each primary coil is equipped with a high-frequency inverter. After analyzing the circuit topology of this proposed structure by coupling model in detailed, it is released that this structure not only needs capacitors to compensate the coil’s self-induction, but also needs additional capacitors to compensate the equivalent reactance caused by another primary coil. By choosing appropriate additional compensation capacitances, effective output power allocation of two inverters is achieved. Finally, an experimental setup of total power output of 1.4 kW is employed to verify the output power ratio of 1:1 and 1:2. The result shows that the proposed system is validated.The IPT system based on dual parallel wound primary coil is prospected to be applied in the rail transit contactless power supply system.