Title :
The smooth transition research of different PWM modulations for vector control of induction motor in medium voltage high power
Author :
Wang, Yongxing ; Wen, Xuhui ; Guo, Xinhua ; Zhao, Feng ; Cong, Wei
Author_Institution :
Inst. of Electr. Eng., Beijing, China
Abstract :
In high power AC speed regulation systems, frequency of inverter is wide and frequency of switching is limited. In this paper, the PWM strategy for vector control of induction motor in medium voltage high power is introduced. Asynchronous modulation and multi-step synchronous modulations are concluded in the PWM strategy. In synchronous modulations, selective harmonic elimination PWM (SHEPWM) is employed because of low switching frequency. The factors impacting smooth transition between different PWM modulation modes are analyzed. The corresponding solutions are put forward. And these methods are verified by some experiments in induction motor with 135kW.
Keywords :
PWM invertors; harmonics suppression; induction motors; machine vector control; PWM modulations; PWM selective harmonic elimination; asynchronous modulation; high power AC speed regulation systems; induction motor vector control; inverter frequency; multistep synchronous modulations; power 135 kW; smooth transition research; switching frequency; Delay; Harmonic analysis; Inductance; Induction motors; Pulse width modulation; Stators; SHEPWM; SPWM; induction motor; medium voltage high power; smooth transition;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073517
