Title :
Operation of induction machines with electromagnetic irregularities
Author :
Garces, Luis ; Kerkman, Russel J. ; Rowan, Timothy M. ; Schlegel, Dave ; Seibel, Brian J. ; Stachowiak, Kevin
Author_Institution :
Allen-Bradley Co., Mequon, WI, USA
Abstract :
The paper presents application data showing an induction motor developing torque at zero slip. This condition can prevent proper field commissioning of the motor drive system and contribute to inferior system performance. The paper examines rotor asymmetries, one cause for the nonzero torque condition. Voltage and current spectra, for current regulated and volts per hertz controllers, are presented. Another source for the nonzero torque at zero slip, machine space harmonics, is discussed and analyzed. The paper examines contributions to abnormal machine operation of each source by examining the signals present in the respective waveforms. Control strategies are developed where appropriate to mitigate the adverse effects of the motor irregularities
Keywords :
asynchronous machines; harmonics; machine testing; machine theory; slip (asynchronous machines); torque; current spectra; electromagnetic irregularities; induction machines; machine space harmonics; rotor asymmetries; torque development; voltage spectra; zero slip; Costs; Electromagnetic induction; Induction machines; Induction motor drives; Machine windings; Rotors; Stator windings; System performance; Torque; Wounds;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.643021
