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Eddy Current Losses in Solid Pole Shoes in a Two-Pole Permanent Magnet Motor
Department of Industrial Economics, Electrical and Mechanical Engineering, University West, Trollhättan, Sweden
Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
- 1 Department of Industrial Economics, Electrical and Mechanical Engineering, University West, Trollhättan, Sweden
- 2 Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
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Abstract
The aim of this paper is to present the eddy current losses in solid pole shoes in a permanent magnet two-pole electric motor. In the presented paper, the authors have chosen to work with three different analytical models, Carter’s theory, Gibb’s theory and Lawrenson’s theory, each with different degree of accuracy and simplifications. The results from the analytical models all present relatively low eddy current losses, giving the designer valuable arguments to utilize solid pole shoes, as a rotor with solid poles is from a construction point of view a more suitable choice, increasing the mechanical stability and reducing the production cost, compared to the laminated design.
KeywordsElectrical MachinesRotor Core LossesPermanent Magnet Motor
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