A method of representing the effects of magnetic saturation in a coupled-circuit model of a claw-pole alternator is presented. In the approach considered, the airgap flux density produced by each winding is expressed as a function of magnetic operating point. A challenge in the implementation is that the airgap flux densities consist of several significant harmonics, each of which changes at a distinct rate as iron saturates. Despite this complication, it is shown that relatively simple measurements can be used to determine model parameters. The model is implemented in the analysis of several alternator/rectifier systems using a commercial state-model-based circuit analysis program. Comparisons with experimental results over a wide range of speeds and operating conditions demonstrate its accuracy in predicting both the steady state and transient behavior of the systems.
H. Bai et al., "Incorporating the Effects of Magnetic Saturation in a Coupled-Circuit Model of a Claw-Pole Alternator," IEEE Transactions on Energy Conversion, Institute of Electrical and Electronics Engineers (IEEE), Jan 2007.
The definitive version is available at http://dx.doi.org/10.1109/TEC.2006.875444
Electrical and Computer Engineering
Mechanical and Aerospace Engineering
Keywords and Phrases
Electromagnetic Torque; Rectifiers; State Model; Synchronous Machines
Article - Journal
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