Title :
Inverter control during overload and following power interruption
Author :
Seibel, Brian J. ; Kerkman, Russel J. ; Leggate, David
Author_Institution :
Allen Bradley, Mequon, WI, USA
Abstract :
A frequency control method that interacts with a voltage-controlled current-regulated pulse-width modulated (VC-CRPWM) inverter to provide tripless operation during abnormal operating conditions is presented. Specifically, operation during and after a momentary overload and reconnection to a deenergized rotating motor under load is accomplished without experiencing overcurrent trips, knowledge of motor parameters, or velocity feedback. In addition, a stability study of the synchronous VC-CRPWM inverter that determines the effects of controller, motor, and load variations on the region of instability is performed
Keywords :
controllers; electric current control; electric motors; electrical faults; frequency control; invertors; load (electric); pulse width modulation; stability; voltage control; PWM; controller; current control; electrical faults; frequency control; inverter; load; motor; overcurrent; overload; power interruption; reconnection; stability; synchronous invertor; tripless operation; voltage control; Acceleration; Control systems; Feedback; Frequency control; Industry Applications Society; Pulse inverters; Pulse modulation; Pulse width modulation inverters; Velocity control; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
