Inverter control during overload and following power interruption

Author

Seibel, Brian J. ; Kerkman, Russel J. ; Leggate, David

Author_Institution

Allen-Bradley Co. Inc., Brown Deer, WI, USA

fYear

1989

fDate

1-5 Oct. 1989

Firstpage

408

Abstract

A frequency control method is presented that interacts with a voltage-controlled current-regulated pulse-width modulation (CRPWM) inverter to provide operation during and after a momentary overload and reconnection to a de-energized rotating motor under load. This is accomplished without overcurrent trips, knowledge of motor parameters, or velocity feedback. In addition, a stability study of the synchronous voltage-controlled CRPWM inverter is performed that determines the effects of controller, motor, and load variations on the region of instability. Results reveal that the synchronous voltage-controlled CRPWM inverter and traditional open velocity loop PWM inverter have similar unstable regions with respect to operating frequency.<>

Keywords

electric current control; invertors; pulse width modulation; voltage control; CRPWM; de-energized rotating motor; frequency control method; instability; overload; power interruption; pulse-width modulation; velocity feedback; voltage-controlled current-regulated PWM invertor; Feedback; Frequency control; Load management; Open loop systems; Pulse inverters; Pulse modulation; Pulse width modulation inverters; Stability; Synchronous motors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE

Conference_Location

San Diego, CA, USA

Type

conf

DOI

10.1109/IAS.1989.96684

Filename

96684