电压空间矢量PWM控制技术的探讨

Discussion of Space Voltage Vector PWM Technology

本文利用SVPWM控制技术产生的正六边形旋转磁场,在基本电压矢量之间插入零电压矢量。利用得到的SVPWM波及傅立叶级数基本知识,证明了基频以下调速时,逆变器输出电压—频率比为恒值这一结论。这对准确而全面理解SVPWM控制技术、深刻掌握交流调速系统有关内容具有重要意义。

In this paper, SVPWM control technology is utilized method is employed by inserting zero voltage vectors between SVPWM w＇aves and the basic knowledge of Fourier series, the the fundamental frequency, which the inverter output U/f is a to produce hexagonal rotating magnetic field, and a the basic voltage vectors skillfully. Using the above proof is given when adjusting motor＇s speed under constant. It is important for students to understand and master the knowledge of SVPWM technology and AC drive system accurately and comprehensively.