Title :
Study of a Novel Over-Modulation Technique Based on Space-Vector PWM
Author :
Quan, Hengli ; Gang, Zhang ; Jie, Chen ; Wu, Zuomin ; Liu, Zhigang
Author_Institution :
Sch. of Electr. Eng., Beijing Jiao-tong Univ., Beijing, China
Abstract :
In this paper, according to the operational principle of SVPWM, a novel over-modulation technique is proposed. By means of graphical analysis and Fourier decomposition, the accurate relationship between modulation index(MI) and auxiliary parameter mref is derived respectively under two over-modulation area. With this unified auxiliary parameter, the output voltage of three phases could increase continuously up to that of six-step operation. In addition, the total harmonic distortion (THD) of the output voltage using the novel over-modulation technique proposed is analyzed. An experiment setup is presented at the end of this paper, which proves the over-modulation technique proposed to be realizable.
Keywords :
Fourier analysis; PWM invertors; graph theory; harmonic distortion; Fourier decomposition; SVPWM; THD; auxiliary parameter; graphical analysis; modulation index; overmodulation technique; space-vector PWM invertor; total harmonic distortion; voltage source inverter; Computers; Distributed control; Monitoring; Fourier decomposition; Harmonic Analysis; Over-Modulation; Space Vector PWM;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.187
