基于固态变压器的大功率逆变技术研究.pdfVIP

第 3 9 卷第4 期 四 川 电 力 技 术 V ol.39,N o.4 2016 年 8 月 Sichuan Electric Power Technology Aug. ,2016 基于固态变压器的大功率逆变技术研究 宋飞宇S 张海燕、祁明龙2,郭 建 、孙忠鸣1 (1.上海电机学院，上海201306;2•上海电气富士电机电气技术有限公司，上 海 200070) 摘 要 ：固态变压器结合了电力电子变换技术和高频电能变换技术，实现将电能从一种电力特征的转变为另一种电 力特征。逆变器作为固态变压器中能量转换的装置，技术已经很成熟，但是在大功率逆变器运行的设计上还有许多 问题有待解决。逆变器并联运行控制技术是实现模块化、高可靠性冗余逆变电源系统的基础。分析了逆变器并联运 行时环流的产生原因，总结了目前已有的逆变器并联方案。又根据组合式逆变器运行原理，用仿真实验验证了三相 组合式逆变器用于固态变压器的优越性和可行性。 关键词：固态变压器;大功率逆变技术;并联逆变器;组合式逆变器 Abstract ：Solid state transformer combines power electronic conversion technology and high - frequency power conversion tech­ nology to realize the transformation of electric energy from one kind of electric power to another. As a power conversion device in solid state transformer, the technology of inverter has been very mature, but there are many problems still to be solved in the operation design of high - power inverter. The parallel operation control technology of inverter is the basis for the realiza­ tion of modular and redundant inverter power supply system with high reliability. The causes of the circulating current during the parallel operation of inverter are analyzed, and the existing parallel schemes are summarized. According to the operating principle of the combined inverter, the superiority and feasibility is verified by the simulation experiments that the three - phase combined inverter can be used in solid state transformer. Key words ：solid state transformer ；high - power inverter ；parallel inverter ；modular inverter 中图分类号:TM41文献标志码:A 文章编号 :1003 -6954(2016)04 -0018 -06 固态变压器工作拓扑如图1 所示，该固态变压 〇 固态变压器简介