A Permanent Magnet Synchronous Machine with Motor and Generator Functionalities in Single Stator Core

This paper introduces design and analysis performed for a dual winding electric machine that operates both motor and generator mode. The proposed structure could be a considerable choice for multitasking operation and fault tolerant applications. Motor and generator windings of the electric machine are located on the same stator core. Windings are concentrated type so that electrical and magnetic isolation is maintained. With the proposed technique, simultaneous motoring and generating operations can be implemented in the single housing of electric machine. This structure provides low volume, low mass and low inertia for industrial applications. It also provides economical benefit compared to using separate motor and generator. Design considerations of the proposed electric machine are outlined in the paper. Also a comparison between distributed winding topology and concentrated winding topologies is performed. Finally experimental results are discussed.

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