Finite element models are invaluable for determining expected machine performance. However, finite element analysis can be computationally intense; particularly if a large numbers of studies or high bandwidth studies are required. One method to avoid this difficulty is to extract machine parameters from the finite element model and use the parameters in lumped parameter models. While often useful, such an approach does not represent space harmonics or asymmetries in the motor. A methodology for constructing a state-variable model, based on a magnetic equivalent circuit of the motor is described herein. In addition, the parameters for this model are based solely on geometrical data. This approach is an excellent compromise between the speed of lumped parameter models and the ability of finite element methods to capture spatial effects. Experimental validation of the model is provided.
S. D. Sudhoff et al., "Magnetic Equivalent Circuit Modeling of Induction Motors," IEEE Transactions on Energy Conversion, Institute of Electrical and Electronics Engineers (IEEE), Jun 2007.
The definitive version is available at http://dx.doi.org/10.1109/TEC.2006.875471
Electrical and Computer Engineering
Article - Journal
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