基于NPC的3D-SVPWM整流调制策略

Research on 3D-SVPWM Rectifying Modulation Strategy Based on NPC

为了优化三电平全功率变流器的调制策略,在二极管中点钳位型变流器NPC的基础上,分析了NPC的空间矢量脉宽调制SVPWM算法,并在该算法的基础上将二维αβ空间矢量转换到三维立方体空间矢量,分析NPC的三维空间矢量脉宽调制3D-SVPWM算法,运用PSIM仿真软件对NPC变流器整流部分进行了仿真。仿真结果验证了在NPC使用3D-SVPWM调制策略的有效性。

In order to optimize the modulation strategy of three-level full power converter, and based on the diode neutral pint clamped NPC, an analysis has been made of the NPC space vector PWM （SVPWM） algorithm. On the basis of the algorithm, the two-dimensional αβ space vector plane is to be converted to the three-dimensional cubic vector, followed by an analysis of the three-dimensional space vector PWM 3D-SVPWM algorithm of NPC and a simulation of the rectifler of NPC converter by using PSIM simulation software. The simulation results verify the effectiveness of 3D-SVPWM modulation strategy for the diode neutral point clamped converter.