一种变流器结合变压器的单相-三相电源变换方案研究  

Research on Single⁃phase to Three⁃phase Power Conversion Scheme Based on Converter Combined with Transformer

作　　者：郭成 孙科[2] GUO Cheng;SUN Ke(Yunnan Electric Power Research Institute,Kunming 650217,China;School of Electric Power Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,昆明650217 [2]西南交通大学电气工程学院,成都610031

出　　处：《电力电容器与无功补偿》2022年第3期112-118,共7页Power Capacitor & Reactive Power Compensation

摘　　要：在220 V配电领域,采用单相供电的场合下,无法满足用户的三相用电需求。针对这一问题,本文提出一种基于单相变流器和逆变压器的供电方案,可将电力从单相变换为三相。该方案基于变压器的逆变换原理,变流器起电压变换作用。整流侧采用电压和电流双闭环控制,设计了无功补偿模块,实现网侧电压和电流同相位。同时,逆变侧得到的移相电压配合逆变压器输出对称的三相电压。最后,在Matlab/Simulink平台上搭建了系统模型,仿真结果验证了该方案的可行性。Inthefield of 220V power distribution,adoption of single⁃phase supply can not meetthethree⁃phase power demand of users.In view of this problem,a power supply scheme based on single⁃phase converter and inverse transformer is proposed in this paper,which can transform the power from single⁃phase to three⁃phase.This scheme is based on the inverter principle of transformer inverter and the converter plays the role of voltage transformation.The voltage and current double closed⁃loop control is adopted for the rectifier side,the reactive power compensation module is designed and the same phase of voltage and current at network side is achieved.At the same time,the phase⁃shifted voltage obtained from the inverter side matches with the inverse transformer to output a symmetrical three⁃phase voltage.Finally,the system model is set up on the Matlab/Simulink platform and feasibility of the scheme is verified by the simulation result.

关 键 词：低压配电网 电压变换 单相变流器 无功补偿 

分 类 号：TM46[电气工程—电器]