摘要
将三相-单相电力电子变压器应用于贯通式同相供电系统,对比计算了传统变压器、电力电子变压器的单相侧和三相侧之间负载不平衡、无功和谐波的潮流关系。基于三电平电路研究了隔离DC-DC变换器和多模块级联整流器的控制方法:整流器采用有功无功解耦控制,实现了三相网侧单位功率因数运行;隔离DCDC变换器采用双边三电平控制,减小了流过中频变压器电感电流有效值。仿真和实验结果验证了基于三相-单相电力电子变压器的贯通式同相供电系统可有效消除负载不平衡、无功和谐波对三相电网电能质量的不良影响,系统动静态性能良好。
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 transformer 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.
作者
闫晗
舒泽亮
姚家煊
陈亚军
马俊扬
杜玉亮
YAN Han;SHU Zeliang;YAO Jiaxuan;CHEN Yajun;MA Junyang;DU Yuliang(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China;State Grid Suining Electric Power Supply Company,Chengdu 629000,China;The Locomotive and Car Research Institute,China Railway Sciences Corporation Limited,Beijing 100081,China;Beijing Zongheng Electro-mechanical Technology Co.,Ltd.,Beijing 100081,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2019年第11期159-164,共6页
Electric Power Automation Equipment
基金
中国铁道科学研究院集团有限公司科研项目(1851-ZH1603)~~
关键词
三相-单相电力电子变压器
贯通式同相供电系统
电能质量
潮流计算
three-phase to single-phase power electronic transformer
co-phase power supply system
power quality
power flow calculation
