电力电子变压器高压级的综合控制及其DSP实现  

The high voltage stage comprehensive control of a power electronic transformer and its implementation of DSP

作　　者：赵刚[1] 卢子广[1] 杨达亮[1] 

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《电测与仪表》2016年第4期51-56,共6页Electrical Measurement & Instrumentation

基　　金：广西科技攻关计划项目(桂科攻1348007-4)

摘　　要：为了使电力电子变压器适应配电网高压大功率场合,文章采用了高压级H桥级联低压级H桥并联的电路结构,该结构可以提高系统的电压等级和电流等级。文中主要对系统的工作原理、拓扑结构进行了分析,研究了高压级的控制策略。MATLAB/Simulink仿真验证了本方案的可行性。最后用MOSFET开关管IRFP460自制H桥搭建实验平台,采用32位定点DSP处理器TMS320F2812实现对高压级的综合控制。实验结果表明,该系统可以实现H桥均压,单位功率因数运行和实时无功补偿等功能,具有良好的动静态响应性能。In order to make power electronic transformer （PET） apply to high voltage and high power situation, a cir- cuit structure of high voltage stage consisting of cascaded H bridges and low voltage stage consisting of parallel H bridges is proposed in this paper, which could improve the voltage and current class. The operation principles and to- pology structure of the system are described and analyzed and the control strategy of high voltage stage is discussed in detail. The practicability of the method is verified by MATLAB/simulation results. Finally, the high voltage stage ex- periment platform is established by H bridges made of IRFP460, and comprehensive control of the stage is realized by fixed-point 32-bits DSP controller TMS320F2812. The experiment results show that the system, possessed of a good performance of dynamic and static response, can achieve voltage equalizing of every H bridge, operate under a unit power factor condition on the grid side and realize real-time reactive power compensation.

关 键 词：电力电子变压器 级联H桥 载波移相SPWM技术 DSP 

分 类 号：TM42[电气工程—电器]