Variable speed motor drive generated magnetic fields

Variable speed motor drive generated magnetic fields

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 prod...

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Veröffentlicht in:IEEE transactions on power delivery 1994-07, Vol.9 (3), p.1639-1646
Hauptverfasser: Karady, G.G., Berisha, S.H., Muralidhar, M., Demcko, J.A., Samotyj, M.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Character generation
Electrical engineering. Electrical power engineering
Electrical machines
Exact sciences and technology
Frequency
Magnetic field measurement
Magnetic fields
Motor drives
Power electronics
Power generation
Pulse width modulation inverters
Regulation and control
Switches
Voltage
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Beschreibung
Zusammenfassung: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.< >
ISSN:0885-8977
1937-4208
DOI:10.1109/61.311199