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在传统三电平空间矢量脉宽调制算法中,计算各基本矢量的占空比常常涉及到三角函数或查表计算,计算比较复杂,从而耗费大量的控制器资源。鉴于此,提出了一种三电平空间矢量脉宽调制的简化算法,它以两电平空间矢量脉宽调制简化算法为基础,运用到原有的将三电平空间矢量图划分为6个小的正六边形的算法中,使原有的调制算法得到了简化。仿真结果验证了此简化算法的准确性和可行性。
In traditional three-level space vector pulse width modulation algorithm, calculating the duty cycle of each basic vector often involves trigonometric functions or look-up table calculation, the calculation is more complicated, which consumes a large amount of controller resources. In view of this, a simplified algorithm for three-level space vector pulse width modulation is proposed, which is based on the simplified two-level space vector PWM algorithm and the original three-level space vector graph is divided into six Small hexagonal algorithm, the original modulation algorithm has been simplified. Simulation results verify the accuracy and feasibility of this simplified algorithm.