三相电压型PWM整流器的数学模型和主电路设计

Mathematical model and main circuit design of three-phase voltage-source PWM rectifier

提出了一套主电路设计方法 .首先利用状态空间平均法建立了三相PWMVSR的数学模型 ,并在此基础之上进一步建立了三相PWMVSR的等效电路模型 ;然后根据上述模型分别对三相PWMVSR的交流侧和直流侧进行了理论分析 ;最后着重分析讨论了交流电感、直流电压、直流电容等参数的选择 .这对三相PWMVSR的主电路设计有着理论指导作用 .

A design method of main circuit of 3-phase PWM VSR is presented. Firstly, the mathematical model of 3-phase PMW VSR using state space average method is studied and an equivalent circuit model is developed. Then theoretical analysis of the DC and AC side characteristics of PWM VSR is given, Finally, the emphasis is put on how to select AC inductor, DC voltage and DC capacitor. This work will be beneficial to the design of main circuit of 3-phase PMW VSR.