三相变四相电力变压器研究

Research on three-phase to four-phase power transformers

对3种不同的三相变四相电力变压器接线原理及结构特点进行比较并总结了各自的优缺点;建立了3种不同变压器的仿真模型并进行了在不同负荷条件下的仿真实验,比较了3种不同变压器在三相与四相交流电转换过程中的性能特点。研究表明:阻抗匹配三相变四相平衡变压器是利用绕组间的阻抗约束关系实现绕组间电磁关系平衡,绕组间无曲折连接,材料利用率较高,在三相与四相不对称转换过程中具有明显的优越性。

Wiring principles and structure characteristics of three kinds of three-phase to flint-phase power transibmers were eompared. Thei r advantages and disadvantages were summarized respectively. Simulalion models of three kinds of transformers were established and the simulation experiments under different load conditions were perfi）rmed. The performance comparison resuhs of different transformers indicate that three-phase to four-phase transformer with impedance match balancing, whose wiring impedance satisfies the constraint relations in order to realize electromagnetism balance between windings, has high material utilization because of no zigzag connection It has distinel advantages in the transform process of three-phase to four-phase comparing to other structures.