Electric Motors and Generators in Hybrid-Electric Powertrains
Date Published: 2003-06-23
Paper Number:2003-01-2313
DOI: 10.4271/2003-01-2313
Citation:
Walker, A. and Lampérth, M., "Electric Motors and Generators in Hybrid-Electric Powertrains," SAE Technical Paper 2003-01-2313, 2003, doi:10.4271/2003-01-2313.
Hybrid-Electric vehicle powertrains combine conventional power sources and energy storage with electric machines, in either motoring operation, generating operation or combined operation. The specifications for operation in minimal- or fully-hybrid powertrains lead some electric machine candidates to be more attractive than others. Starter motor and alternator suppliers now offer the next generation product: an Integrated Motor-Generator, with initial application in 42V systems. The characteristic strengths of the Lundell alternator, the commutated dc motor, the brushless dc motor-generator, the wound rotor generator, the induction motor, and the switched reluctance motor-generator are discussed, and compared. A selection is offered based on operation, while considering unit cost. The brushless dc motor-generator stands out as the most attractive candidate for applications either generating or in combined operation.
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