电压空间矢量脉宽调制的简单算法

A Simple Algorithm of Voltage Space Vector PWM

在电压空间矢量脉宽调制(SVPWM)控制技术原理的基础上,提出了一种简单快速算法,该算法只有普通的四则运算,计算变得非常简单,消除了常规的空间矢量控制算法中由于三角函数和无理数的近似计算而带来的计算误差及影响计算精度和速度的缺点,使结果更加准确。因而更适合应用于基于DSP的数字化控制。理论分析和大量的MATLAB仿真结果表明,该算法具有谐波含量低、直流电压利用率高的优点。

Based on the the principle of space vector pulse width modulation technology. A novel algorithm of space vector PWM was put forward. The algorithm has only normal arithmetic operations. The algorithm needs only four arithmetic operations ,so that the algorithm may become very easy and it eliminates the calculation errors resulted from the approximate calculation of trigonometric functions and irrational numbers and the defects impacting calculation accuracy and speed ,thus the result would be more precise and be more applicable to the digital control based on DSP,theoretical analyses and large numbers of MATLAB simulations have proved that the algorithm has the advantages of little harmonic content and high utilization coefficient of DC voltage.