双级矩阵变换器空间矢量调制策略改进

双级矩阵变换器空间矢量调制策略改进

党存禄;赵鹏林;董瑞洪

【期刊名称】《工矿自动化》 【年(卷),期】2013(039)006

【摘要】针对双级矩阵变换器空间矢量脉宽调制策略存在控制复杂度高、不能对双级矩阵变换器的输入功率因数进行调节的问题,提出了采用间接空间矢量调制策略的方案:①各PWM周期内直流平均电压为一恒定值,从而免去了逆变级调制系数的修正；②输入功率因数角可调.同时,利用参考电压和变换矩阵对该调制策略进行简化,使其能够更有效地控制无功功率和输出电压.仿真结果验证了该调制策略的正确性和有效性.%In view of problems that space vector pulse width modulation strategy of two-stage matrix converter has high control complexity and cannot adjust input power factor of the two-stage matrix converter,a scheme of indirect space vector modulation strategy was proposed,which average DC voltage in PWM period is a constant value and so modification to modulation coefficient of the inverter is avoided,and which input power factor angle is adjustable.Then the modulation strategy was simplified by use of reference voltage and matrix converter,and so the reactive power and output voltage could be controlled more effectively.The simulation result verifies correctness and validity of the modulation strategy. 【总页数】6页(56-61)

【关键词】双级矩阵变换器;空间矢量调制;参考电压;整流级;逆变级;SVPWM