摘要
在二极管箝位型(NPC)三电平逆变器中,若使用直角坐标系的SVPWM算法需要大量的三角函数运算,使得算法繁琐复杂。为简化SVPWM算法,本文提出基于60°坐标系的SVPWM算法,该算法巧妙利用60°坐标系非正交且坐标轴与某些基本矢量存在着空间平行等特点,简化了参考电压矢量所在位置的判定;使用最近三矢量法和伏秒平衡原理求得基本矢量及其作用时间,然后用七段式SVPWM产生实际的脉宽调制波形。本文提出算法的有效性和可行性已在MATLAB仿真平台上得到了验证。
In the Neutral Point Clamped(NPC)three-level inverter,if the SVPWM algorithm using the rectangular coordinate system requires a large number of trigonometric function operations,the algorithm is complicated and complicated.To simplify the SVPWM algorithm,this paper proposes the SVPWM algorithm based on the 60°coordinate system.This algorithm cleverly utilizes the 60°coordinate system is nonorthogonal and the coordinate axis is parallel to some basic vectors to simplify the reference voltage vector.Determination of location;Use the latest three-vector method and the volt-second balance principle to obtain the basic vector and its action time,and then use the seven-segment SVPWM to generate the actual pulsewidth modulation waveform.The correctness and implementability of the algorithm proposed in this paper are verified on the MATLAB simulation platform.
作者
贾万水
张德军
张阳
JIA Wan-shui;ZHANG De-jun;ZHANG Yang(College of Electrical and Information Engineering,Hunan University of Technology,Hunan Zhuzhou 412007,China)
出处
《新一代信息技术》
2020年第7期22-29,共8页
New Generation of Information Technology
基金
湖南省教育厅一般项目(项目编号:18C0510)。
