自耦式12脉波整流系统平衡电抗器临界值设计

Determination of Interphase Reactor Critical Value in Autotransformer Based 12 pulse AC-DC Converter

在自耦式12脉波整流系统中,平衡电抗器是整个系统的关键器件。首先对自耦式12脉波整流系统平衡电抗器等效电路进行了详细分析,得出平衡电抗器电感和电路其他参数之间的关系。在考虑了移相变压器激磁电流对平衡电抗器激磁电流影响的因素下,提出了平衡电抗器临界值选取简单而有效的方法,仿真和实验证明了理论分析的正确性。根据该方法计算的临界电感值具有足够精度,可以满足工程需要。平衡电抗器的体积也能够进一步减小。

In the autotransformer based 12 pulse AC-DC converter,interphase reactor is a key component of overall system.A detailed theoretical analysis of the equivalent circuit of interphase reactor was provided,so the relation between interphase reactor inductance and other circuit parameters was proposed.In considering the influence of autotransformer magnetizing current to interphase reactor magnetizing current,a simple and effective method was presented to calculate the critical value of the reactor.Simulation and experimental results verify the validity of the calculation approach.The calculated critical value is accurate enough to meet the engineering need.The size of interphase reactor can be further reduced.