On The Possibility To Use A Hybrid Synchronous Machine As An Integrated Starter-Generator

The hybrid and mild hybrid cars require high performance integrated starter-generators (ISG). Several electrical machines were designed and used as ISGs up today. A hybrid synchronous machine (HSM) to be employed for such purpose is proposed in this paper. The HSM has the excitation field produced both by permanent magnets and auxiliary excitation winding. Three construction variants of the HSM were studied comparatively. A prototype was designed, constructed and tested. The background of the HSM, operating as a generator is discussed, too. All the obtained results, by tests or by computer simulations, emphasise that HSM could be an excellent ISG for a hybrid car.