Title :
Variable speed motor drive generated magnetic fields
Author :
Karady, G.G. ; Berisha, Sh H. ; Muralidhar, M. ; Demcko, J.A. ; Samotyj, M.
Author_Institution :
Arizona State Univ., Tempe, AZ, USA
fDate :
7/1/1994 12:00:00 AM
Abstract :
Variable speed motor drives produce nonsinusoidal currents and generate periodic magnetic fields with significant frequency content. This paper describes measuring techniques and an evaluation method to characterize the generated fields. The study involved three drives rated from 1-150 hp. They produced field strengths up to 100-200 mG and had harmonic distortion factors of 50-60% in the 15-60 cm range from the motor. The dominant frequency range is 15-1000 Hz. The results emphasize the importance of the characterization of electronic device generated magnetic fields
Keywords :
electric field measurement; electric motors; electromagnetic fields; harmonics; machine testing; magnetic field measurement; variable speed drives; 1 to 150 hp; 100 to 200 mG; 15 to 1000 Hz; 15 to 60 cm; EM field strengths; characterization; dominant frequency range; frequency content; harmonic distortion factors; measuring techniques; nonsinusoidal currents; periodic magnetic fields; variable speed motor drives; Character generation; Frequency; Magnetic field measurement; Magnetic fields; Motor drives; Power electronics; Power generation; Pulse width modulation inverters; Switches; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
