基于空间直角坐标系的逆变器调制波研究.PDF

2015 年 2 月 电 工 技 术 学 报 Vol.30 No. 4 第 30 卷第 4 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Feb. 2015 基于空间直角坐标系的逆变器调制波研究 1 1 2 卢远宏 郑琼林 马 亮 （1. 北京交通大学电气工程学院 北京 100044 2. 北京京仪绿能电力系统工程有限公司 北京 100009 ） 摘要 基于空间直角坐标系，对逆变器三相调制波进行研究，提出三维空间调制波矢量的概 念并讨论其特点。利用调制波矢量得到了SPWM 和SVPWM 的解析表达式，使调制方法、控制策 略、主电路成为一个整体，便于进行统一建模，具有几何含义清晰、理解直观、计算简单等优点。 利用Matlab/Simulink 进行仿真和逆变器平台进行实验，结果证明研究方法正确有效。 关键词：三维空间 直角坐标系 调制波 矢量 过调制 中图分类号：TM464 Research on Modulation Wave of Inverter Based on Space Rectangular Coordinate System Lu Yuanhong 1 Zheng Trillion Q 1 Ma Liang2 （1. School of Electrical Engineering, Beijing Jiaotong University Beijing 100044 China 2. Beijing Jingyi Renewable Energy Engineering Co. LTD Beijing 100009 China ） Abstract Research on three-phase inverter modulation wave based on the space rectangular coordinate system is presented in this paper, and the concept and characteristics of 3-D space modulation wave vector and new research methods is presented as well. Analytical expressions of SPWM and SVPWM can be obtained with modulation wave vector, which makes the modulation method, control strategy and the main circuit model can be analyzed and modeled in the unified form. The Judge condition for over modulation is presented as well. This new method is correct, clear, intuitive, easy to calculate, which is proved by simulation and experiment. Keywords ：3-D space, rectangular coordinate system, modulation wave, vector, over modulation 主要基于 abc 三相平面坐标系[15] 、αβ两相静止平面 1 引言