Magnetic lumped parameter modeling of rotor eccentricity in brushless permanent-magnet motors
Abstract
Vibration, giving rise to acoustical noise, is an important index of motor performance. The unbalanced force due to rotor eccentricity caused by manufacturing imprecision or bearing defects is one possible source of excitation to vibration. The previously developed fast design package for permanent magnet motors, based on magnetic lumped parameter modeling, is modified to predict the influence of rotor eccentricity. Both static and dynamic cases are investigated. Magnetic material nonlinearity is taken into consideration. A two-dimensional relative permeance function is derived by conformal transformation followed by the modification of permeances modeling the air gap. Static and dynamic rotor eccentricity bring different effects to symmetric and asymmetric motors and are discussed separately.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of California, Berkeley, CA (US)
- OSTI Identifier:
- 20000591
- Resource Type:
- Journal Article
- Journal Name:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
- Additional Journal Information:
- Journal Volume: 35; Journal Issue: 5Pt3; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ELECTRIC MOTORS; PERFORMANCE; MECHANICAL VIBRATIONS; NOISE; PERMANENT MAGNETS; MATHEMATICAL MODELS; ROTORS
Citation Formats
Wang, J P, and Lieu, D K. Magnetic lumped parameter modeling of rotor eccentricity in brushless permanent-magnet motors. United States: N. p., 1999.
Web. doi:10.1109/20.799071.
Wang, J P, & Lieu, D K. Magnetic lumped parameter modeling of rotor eccentricity in brushless permanent-magnet motors. United States. https://doi.org/10.1109/20.799071
Wang, J P, and Lieu, D K. 1999.
"Magnetic lumped parameter modeling of rotor eccentricity in brushless permanent-magnet motors". United States. https://doi.org/10.1109/20.799071.
@article{osti_20000591,
title = {Magnetic lumped parameter modeling of rotor eccentricity in brushless permanent-magnet motors},
author = {Wang, J P and Lieu, D K},
abstractNote = {Vibration, giving rise to acoustical noise, is an important index of motor performance. The unbalanced force due to rotor eccentricity caused by manufacturing imprecision or bearing defects is one possible source of excitation to vibration. The previously developed fast design package for permanent magnet motors, based on magnetic lumped parameter modeling, is modified to predict the influence of rotor eccentricity. Both static and dynamic cases are investigated. Magnetic material nonlinearity is taken into consideration. A two-dimensional relative permeance function is derived by conformal transformation followed by the modification of permeances modeling the air gap. Static and dynamic rotor eccentricity bring different effects to symmetric and asymmetric motors and are discussed separately.},
doi = {10.1109/20.799071},
url = {https://www.osti.gov/biblio/20000591},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt3,
volume = 35,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 1999},
month = {Wed Sep 01 00:00:00 EDT 1999}
}