PWM调制模式对TSMC-S/G系统的影响  

Effect of PWM Modulation Modes on Two-Stage Matrix Converter-Starter/Generation System

作　　者：刘晓宇[1] 周波[1] 梁莹[1] 

机构地区：[1]南京航空航天大学江苏省新能源发电与电能变换重点实验室,南京210016

出　　处：《电工技术学报》2015年第16期94-102,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51177069);江苏省高校优秀科技创新团队资助项目

摘　　要：将双级矩阵变换器(TSMC)引入起动/发电系统,构成基于TSMC的新型起发系统(TSMC-S/G系统)。系统起动时采用三相六拍控制策略,并对TSMC采用PWM调制进行电流调节。针对系统特点,详细分析了不同PWM调制模式对TSMC母线电流、安全换流策略、转矩脉动以及非导通相端电压、电流的影响,研究了各种调制模式的特点,提出了优化的调制策略,最终确定了最适合TSMC-S/G系统起动的调制模式。仿真分析与实验结果均验证了理论分析的正确性与可行性。The usage of the two-stage matrix converter （TSMC） in the starter/generation system is investigated in this paper. Then a new generator/starter system based on TSMC （TSMC-S/G system） is constructed. Three-phase-six-beat modulation strategy is adopted when the system starts. The PWM modulation is used to regulate the current of TSMC. Considering the characteristics of the system, the effects of different PWM modulation modes on the bus current of TSMC, the safe commutation strategies, the torque ripple, and the voltage and the current of the non-conducting phase are analyzed in detail. The characteristics of various modulation modes are also studied, and the optimized modulation strategy is proposed to finalize the most suitable modulation mode for TSMC-S/G system at starting. The feasibility and effectiveness of the control strategy are validated by simulations and experimental results.

关 键 词：双级矩阵变换器起动/发电系统 PWM调制模式 母线电流 安全换流 转矩脉动非导通相电流 

分 类 号：TM464[电气工程—电器]