整流级有零矢量的TSMC调制策略  

Modulation technology for TSMC with zero vectors in rectifier stage

作　　者：董锋斌[1] 皇金锋[1] 钟彦儒[2] 

机构地区：[1]陕西理工学院电气工程系,陕西汉中723003 [2]西安理工大学电气工程系,陕西西安710048

出　　处：《电力自动化设备》2011年第3期66-70,共5页Electric Power Automation Equipment

基　　金：陕西省教育厅科学研究计划资助项目(09JK374;2010JK468);陕西省工业自动化省级重点实验室资助项目(2010JS042)~~

摘　　要：在整流级无零矢量调制的双级式矩阵变换器(TSMC)中,各个PWM周期内整流级输出平均直流电压为时变量,增加了逆变级的控制难度。将常规矩阵变换器双空间矢量调制技术推广到TSMC中,分析了整流级有零矢量的TSMC双空间矢量调制原理。由于整流级输出的直流平均电压在一个PWM周期内为恒值,逆变级的调制系数不需要在每个PWM周期内进行调整,简化了逆变级的控制。采用整流级与逆变级2级开关的协调控制仍能实现整流级零电流换流。用PSIM仿真软件对该调制策略进行实验,仿真结果验证了理论分析的正确性。The average DC output voltage of rectifier stage in a PWM cycle of TSMC（Two-Stage Matrix Converter） without zero vectors is variable,which increases the difficulty of inverter stage control.The two-space-vector modulation technology of conventional matrix converter is introduced to reduce the control difficulty of TSMC.The two-space-vector modulation principle of TSMC with zero vectors is analyzed.As the DC average output voltage of rectifier stage in a PWM cycle is constant,the modulation factor adjustment of inverter stage in a PWM cycle is avoided,which simplifies the control of inverter stage.Zero-current commutation is achieved with two-stage switching coordinative control.The modulation strategy is simulated with PSIM software and the correctness of theoretical analysis is verified.

关 键 词：双级式矩阵变换器 双空间矢量调制 零矢量 PSIM软件 

分 类 号：TM46[电气工程—电器]