Analytical derivation of a coupled-circuit model of a claw-pole alternator with concentrated stator windings

Author

Bai, Hua ; Pekarek, Steven D. ; Tichenor, Jerry ; Eversman, Walter ; Buening, Duane J. ; Holbrook, Gregory R. ; Hull, Michael L. ; Krefta, Ronald J. ; Shields, Steven J.

Author_Institution

Dept. of Electr. & Comput. Eng., Missouri Univ., Rolla, MO, USA

Volume

17

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

32

Lastpage

38

Abstract

A lumped-parameter coupled-circuit model of a claw-pole alternator is derived. To derive the model, analytical techniques are used to define a three-dimensional (3-D) Fourier-series representation of the airgap flux density. Included in the series expansion are the harmonics introduced by rotor saliency, concentrated stator windings, and stator slots. From the airgap flux density waveform, relatively simple closed-form expressions for the stator and rotor self- and mutual-inductances are obtained. The coupled-circuit model is implemented in the simulation of an alternator/rectifier system using a commercial state-model-based circuit analysis program. Comparisons with experimental results demonstrate the accuracy of the model in predicting both the steady-state and transient behavior of the machine

Keywords

Fourier series; air gaps; alternators; harmonic analysis; inductance; lumped parameter networks; machine theory; magnetic flux; rectifying circuits; rotors; stators; 3D Fourier series; airgap flux density; airgap flux density waveform; alternator/rectifier system; claw-pole alternator; closed-form expressions; concentrated stator windings; harmonics; lumped-parameter coupled-circuit model; power conversion harmonics; rotor mutual-inductances; rotor saliency; rotor self-inductances; series expansion; state-model-based circuit analysis program; stator mutual-inductances; stator self-inductances; stator slots; synchronous machines; torque measurement; Alternators; Analytical models; Circuit analysis; Circuit simulation; Closed-form solution; Coupling circuits; Predictive models; Rectifiers; Rotors; Stator windings;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.986434

Filename

986434