不平衡输入条件下矩阵变换器输入性能的改善  

Improvement of the Input Performance for Matrix Converter Under Unbalanced Input Voltage Condition

作　　者：谭国俊[1] 刘青[1] 马星河[1] 吴小兰[1] 

机构地区：[1]中国矿业大学信息与电气工程学院国家煤炭工业电力传动与控制重点实验室,江苏徐州221008

出　　处：《中国矿业大学学报》2008年第3期305-310,共6页Journal of China University of Mining & Technology

基　　金：江苏省普通高校高新技术产业发展项目(JHB05-35)

摘　　要：研究了不平衡输入电压条件下矩阵变换器（MC）的行为特征．依据功率理论对MC的输入电压与电流的关系进行了分析，阐明了输入电压不平衡情况下输入电流发生畸变的原因．提出了改进的双线电压合成策略，并给出了一种新的指令电流生成方法．结果表明：改进的策略同样适用于输入电压平衡的情况；与经典策略相比，在相同的电压不平衡条件下，改进的调制策略可使输入电流畸变率（THD）减小2％～3％；改进的策略只有在输入电压能够保证输出电压达到期望输出值的条件下才能有效减小输入电流的畸变．The behavior of ma voltage condition. According trix converter （MC） was investigated under an to power theory, the relationship of the input unbalanced input voltage and input current was analyzed. The reason of input current distortion under an unbalanced input voltage was demonstra new command be also applied the input curre vol wh t C ed. A urrent to the n improved double line voltage synthesis strategy was developed and a method was presented. The results show that the improved strategy can balanced input voltage condition. Compared with the classical method, nt distortion （THD） can be reduced by 2% to 3% under the same unbalanced tage condition. The improved strategy can effectively eliminate the input current distortion en the input voltage maintained the expected voltage.

关 键 词：不平衡输入电压 矩阵变换器 双线电压合成 指令电流 电流畸变 

分 类 号：TM464[电气工程—电器]