基于优化SVPWM控制算法的三相电压型逆变器

Three-phase Voltage Source Inverter based on Optimized SVPWM Control Algorithm

针对传统的基于αβ坐标系的SVPWM控制算法需要进行坐标变换,算法繁琐、计算量大的缺点,本文提出了一种优化的基于三相静止abc坐标系的SVPWM控制算法,通过直接比较矢量沿abc坐标轴的各个分量的大小就可判断出矢量所在扇区及各个矢量的作用时间,大大简化了SVPWM控制算法的运算过程。将其用在三相电压型PWM逆变器中,对该SVPWM逆变器进行Matlab仿真实验的结果证明了此新型SVPWM控制算法的正确性和可行性。

Aiming at the disadvantages of complex coordinate transformation algorithm and large computation amount of traditional SVPWM control algorithm based on aβcoordinate system,an optimized SVPWM control algorithm based on three-phase stationary abc coordinate system was proposed in this paper.By directly comparing the size of each component of the vector along the abc coordinate axis,we can judge the sector and action time of each vector,which greatly simplifies the operation process of the SVPWM control algorithm.The results of Matlab simulation experiment on the three-phase voltage source PWM inverter used the optimized SVPWM control algorithm prove the correctness and feasibility of the new SVPWM control algorithm.