| Summary: | 碩士 === 國立成功大學 === 機械工程學系 === 104 === The hybrid electric vehicles (HEVs) are gaining more and more attention with the concern of energy saving and carbon reduction improved. The switched reluctance motor is excellent candidate of the integrated starter-generator (ISG), which is the key component of HEVs. ISG is an important assisted power source of HEVs and PHEVs, which possesses a generator, a flywheel and a starter motor. ISG helps to starts the vehicle engine by producing a high torque and engaging the battery as a generator when the engine works steadily. This thesis investigates a novel design of switched reluctance integrated starter-generator that adopts double-gap and higher number of rotor poles than stator poles. The design not only increases the torque density per volume and fault tolerance, but also reduces the torque ripple. Moreover, the capability of motor mode and generator mode is optimized by the use of two stators. The performance of start, generate, assist and brake are analysed via finite element analysis (FEA). A prototype of this novel integrated starter-generator is made to verify the simulation result and the feasibility of double-gap design.
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