The application of PWM rectifier used in self-feedback cascade speed control system

Author

Changxiao, Ma ; Aimeng, Wang

fYear

2008

fDate

6-9 April 2008

Firstpage

2266

Lastpage

2269

Abstract

Analyzed the reason that the power factor of self- feedback cascade speed control system is poor. A new cascaded speed-adjusting system scheme based on PWM technique is proposed in this paper. SCR is substituted with IGBT in the system. It can provide capacitive reactive power to compensate inductive reactive power which the conventional cascaded speed- adjusting system produces. So it can improve power factor. PWM rectifier and PWM direct current control strategy are introduced in the paper. At last, simulation result and conclusion are given. It shows that the new system works at unity power factor.

Keywords

PWM rectifiers; angular velocity control; cascade control; electric current control; electric motors; feedback; insulated gate bipolar transistors; machine control; power factor; reactive power; IGBT; PWM direct current control; PWM rectifier; capacitive reactive power; motor control; power factor; self- feedback cascade speed control system; Feedback; Pulse width modulation; Pulse width modulation inverters; Reactive power; Rectifiers; Rotors; Stator windings; Thyristors; Velocity control; Voltage; Cascade control; PWM; power factor;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies, 2008. DRPT 2008. Third International Conference on

Conference_Location

Nanjuing

Print_ISBN

978-7-900714-13-8

Electronic_ISBN

978-7-900714-13-8

Type

conf

DOI

10.1109/DRPT.2008.4523788

Filename

4523788