Abstract
The paper is devoted to a finite element analysis based design of an electromagnetic system dedicated for hybrid propulsion systems. It consists of two concentric permanent magnet machines, yielding the so-called "single stator dual rotor permanent magnet machine", with an inner rotor, an outer rotor and a stator sandwiched between the two rotors. In order to decouple magnetically both machines, a non magnetic material ring is inserted between the two stators. Giving the small dimensions of the inner machine, special attention is focused upon its sizing.
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