Method for estimating core losses in switched reluctance motors
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Cita com:
hdl:2117/11193
Tipus de documentArticle
Data publicació2010-07-12
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The prediction of switched reluctance motor (SRM) performance requires knowledge of core losses.
However, the calculation of iron losses in SRM is especially complex first because the flux waveforms are
nonsinusoidal and different parts of the magnetic circuit have different waveforms and second because they
are conditioned by the type of control used. This study proposes an analytical method for calculating core
losses that comprises simulation of the SRM using finite element analysis to determine the magnetization
curves, and SRM modeling, which enables transient simulations with the associated electronic power
converter run under different control strategies. The flux density waveforms in the different parts of the SRM
are derived from the flux density waveform of the stator pole that is obtained from the transient simulation.
The specific core losses (in W/kg) are separated into three parts (hysteresis losses, classical eddy current
losses and excess losses) and calculated using the waveforms and time derivatives of the local flux density.
The core losses for each part of the SRM’s magnetic circuit can be estimated using the calculated values for
specific hysteresis losses, specific classical eddy current losses and specific excess losses for each zone.
Adding these individual losses yields the total core losses. The method was applied to three-phase 6/4 SRM,
and the calculated results were compared with experimentally obtained measurements.
CitacióTorrent, M. [et al.]. Method for estimating core losses in switched reluctance motors. "European transactions on electrical power", 12 Juliol 2010.
ISSN1430-144X
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