Eddy‐current computation on a one pole‐pitch model of a synchronous claw‐pole alternator

Abstract

This paper deals with 3D finite‐element calculation of eddy currents in the claws of a claw‐pole alternator taking the rotational geometry movement into account. Two transient edge‐based vector formulations are utilised. The reduction of the model to only one pole pitch in combination with a special boundary pairing in the air gap for the applied lock‐step method is presented. Calculations of varying material conductivity are performed with simplified end windings. The speed characteristics of the eddy currents with real conductivity and realistic end windings concludes the paper.

Citation

Kaehler, C. and Henneberger, G. (2003), "Eddy‐current computation on a one pole‐pitch model of a synchronous claw‐pole alternator", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 22 No. 4, pp. 834-846. https://doi.org/10.1108/03321640310482841