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

Volume

9

Issue

3

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

1639

Lastpage

1646

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;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.311199

Filename

311199