三电平空间矢量PWM的实现

在介绍二极管箝位三电平逆变器空间矢量PWM原理的基础上,提出了一种实用的易于数字化实现的三电平逆变器空间矢量PWM算法,该算法很好地继承了两电平SVPWM算法的思想.在此基础上给出了基于DSP和CPLD的三电平SVPWM实现方案,该方案充分发挥了DSP和CPLD各自的特点.实验结果证实了所提出方法是正确可行的.

Realization of Three-Level Space Vector PWM

The principle of space vector PWM (SVPWM) for diode-clamped three-level inverter is introduced.The algo-rithm of space vector PWM for three-level inverter is proposed,which is practical and easy to realize.This algorithm in-herits primely the idea from two-level SVPWM which is applied extensively.On the basis of it,the scheme for realizing three-level SVPWM based on digital signal processor (DSP) and complex programmable logic device (CPLD) is pre-sented.The role of DSP and CPLD is plotted definitely by three-level SVPWM algorithm.The scheme makes use well of the DSP and CPLD's advantages.The experimental results verify that the proposed space vector PWM algorithm and realizing method are valid and feasible.