一种用于并网三相变换器的电流应力优化控制策略研究  

Study on Current Stress Optimization Control Strategy for Grid-connected Three-phase Converters

作　　者：王泽淇 李佳欣 张浩[2] 韩肖清[1] WANG Zeqi;Lljiaxin;ZHANG Hao;HAN Xiaoqing(l.shanxi key laboratory of power system operation and control,taiyuan university of technology,taiyuan,shanxi 030024,china;school of electrical engineering,beijing jiaotong university,beijing 100080,china)

机构地区：[1]太原理工大学电力系统运行与控制山西省重点实验室,山西太原030024 [2]北京交通大学电气工程学院,北京100080

出　　处：《山西电力》2023年第1期24-28,共5页Shanxi Electric Power

基　　金：山西省高等学校大学生创新创业训练计划项目(202110112056)。

摘　　要：针对含高频变压器结构的三相双向AC/DC变换器,提出了一种电流应力优化控制策略,其中前级双有源桥采用基于三重移相控制的电流应力优化控制策略,后级全桥逆变器采用脉冲宽度调制方式。与传统的移相控制相比,针对并网双向AC/DC变换器提出的控制策略显著降低了电流应力,所提优化控制策略减少了直流侧中间电容,降低了双向变换器的设计成本和体积,提高了系统功率密度。通过Simulink/MATLAB对所提出的控制策略进行了仿真验证。In this paper,a current stress optimization control strategy is proposed based on a three-phase bidirectional AC/DC converter with a high-frequency transfonner structure.The current stress optimization control strategy based on triple phase shifting(TPS)control is adopted for the front-end double active bridge(DAB),and the pulse width modulation is adopted for the back-end full bridge inverter.Compared with the traditional phase shifting control,the proposed control strategy for grid-connected bidirectional AC/DC converter significantly reduces the current stress.In addition,the proposed optimized control strategy reduces the DC-side intermediate capacitance,lowers the design cost and volume of the bidirectional converter,and improves the system power density.Finally,the proposed control strategy is simulated and verified by Simulink/MATLAB.

关 键 词：AC/DC变换器 三重移相控制 双有源桥 电流应力 

分 类 号：TM46[电气工程—电器]