Power flow analysis of unbalance, reactive power and harmonics in traction power supply system based on three-phase to single-phase power electronic transformer

被引：0

作者：

Yan H. ^{[1
]}

Shu Z. ^{[1
]}

Yao J. ^{[1
]}

Chen Y. ^{[2
]}

Ma J. ^{[1
]}

Du Y. ^{[3
,4
]}

机构：

[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu

[2] State Grid Suining Electric Power Supply Company, Chengdu

[3] The Locomotive and Car Research Institute, China Railway Sciences Corporation Limited, Beijing

[4] Beijing Zongheng Electro-mechanical Technology Co., Ltd., Beijing

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 11期

关键词：

Co-phase power supply system; Power flow calculation; Power quality; Three-phase to single-phase power electronic transformer;

D O I：

10.16081/j.epae.201909045

中图分类号：

学科分类号：

摘要：

The three-phase to single-phase power electronic transformer is applied to the co-phase power supply system. The relationships of power flow in condition of unbalance, reactive power and harmonics between the single-phase side and three-phase side on traditional transformer and power electronic transfor-mer are calculated and compared. Based on three-level circuit, the control strategies of isolated DC-DC converter and multi-model cascaded rectifier are studied. The rectifier adopts the decoupling control of active and reactive power to realize the unity power factor operation of grid side, and the isolated DC-DC converter applies the dual three-level control strategy to reduce the RMS of inductance current flowing through the medium frequency transformer. Simulative and experimental results verify that the proposed co-phase power supply system can effectively eliminate the adverse effect produced by unbalanced load, reactive power and harmonics, having good dynamic and static performance. © 2019, Electric Power Automation Equipment Press. All right reserved.

引用

页码：159 / 164

页数：5

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