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Liuchen Chang Graham E. Dawson Tony R. Eastham Department of Electrical Engineering Queen's University |
Permanent Magnet Synchronous Motor Design: Finite Element and Analytical MethodsWhile the design process for conventional induction and synchronous machines in now mature and constrained by frame sizes and standards, there are opportunities to exploit modern CAD techniques and the unique capabilities and characteristics of permanent magnet synchronous motors (PMSMs). This paper presents a design methodology involving the use of an analytical model, based on generalized machine theory, complemented by finite element analysis. The synergistic interaction of those two methods allows an engineer to design a PMSM to specific objectives with confidence. The effects of machine airgap and the span angle and thickness of permanent magnets are evaluated. A set of design specifications and a goodness function are established which are used to select an optimum geometry for the 30 hp prototype motor. |
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