单极性移相控制矩阵式高频链逆变器控制方法  

Control method of uni-polarity phase-shifted controlled high frequency link inverter with matrix converter

作　　者：赵永涛[1] 郑连清[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电源技术》2010年第3期284-287,共4页Chinese Journal of Power Sources

基　　金：重庆市自然科学基金(CSTC2006BB2218)

摘　　要：提出了一种针对矩阵变换器的新型控制策略。通过将常规的SPWM波进行软化处理后,引入脉冲密度调制方式将软化的SPWM波与逆变桥生成的高频正负脉冲进行同步,对同步后的双极性高频脉冲信号分别进行正负极性调制,对调制后生成的软化同步高频脉冲信号进行逻辑处理后作为矩阵变换器功率开关管的驱动信号。此驱动信号可使矩阵变换器的开关管在移相全桥电路生成的电压凹槽处换相,实现了零电压换相。利用Saber软件对电路进行了仿真研究,仿真结果验证了该控制策略的可行性。A novel control strategy for matrix converter was proposed.After the intenerate of the conventional SPWM waveform,pulse-density modulation was introduced to synchronize the soft SPWM waves with the high frequency pulse train signals,which were produced from the former high frequency inverter bridge stage,and modulated the synchronized signals in positive and negative polarity respectively to obtain gate drive signals of matrix converter that commutated in zero-voltage tank produced from the phase-shifted full bridge and zero voltage commutation was obtained.Computer simulation was carried out in terms of Saber software and the results verify the feasibility of the proposed scheme.

关 键 词：高频链 移相控制 矩阵变换器 脉冲密度调制 

分 类 号：TM464[电气工程—电器]