Title :
Variable speed drives evaluation test
Author :
Strangas, Elias G. ; Wagner, Van E. ; Unruh, Tim D.
Author_Institution :
Michigan State Univ., East Lansing, MI, USA
Abstract :
We present a test protocol and results of tests on pulse width modulated (PWM) drives rated at 3 hp and 20 hp and supplied from a 480 V line. The induction motor was turning a 25 hp computer-controlled DC dynamometer. This dynamometer was powered from the same source through a stepdown transformer and a regenerative controlled rectifier. Data (speed, torque, input voltages, currents) were collected and processed in a data acquisition system. The following tests were performed: efficiency and harmonics, voltage sags, and capacitor switching transients. Tests wee also conducted on three nontypical drive configurations
Keywords :
angular velocity measurement; data acquisition; dynamometers; electric current measurement; harmonics; induction motor drives; machine testing; power capacitors; power system transients; torque measurement; variable speed drives; voltage measurement; 20 hp; 25 hp; 3 hp; capacitor switching transients test; computer-controlled DC dynamometer; currents measurement; data acquisition system; drives evaluation test; efficiency test; harmonics test; induction motor; input voltages measurement; pulse width modulated drives; regenerative controlled rectifier; speed measurement; stepdown transformer; torque measurement; variable speed drives; voltage sags test; Induction motors; Protocols; Pulse transformers; Pulse width modulation; Rectifiers; Space vector pulse width modulation; Testing; Torque; Turning; Variable speed drives;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/2943.644887
