Optimization design of interior PM starter-generator

Along with the higher requirement of aircraft's generation system proposed, Integrated Starter Generator system appeared on the stage of history which can work as an electric motor and a generator at the same time. This paper talks about a Permanent Magnet Machine (PMM) which is applied as Integrated Starter Generator (ISG) used into the unmanned aerial vehicle (UAV). Permanent Magnet Machine has superiority in high-efficiency compared with other motors such as Squirrel-cage Asynchronous Motor. Moreover it has advantages of excellent starting performance as a starter and higher quality when it works in the state of power generation. In this paper, the properties of a 12-slot/10-pole PMM such as the no-load operation, generation and elector kinetics, and the short-circuit fault ability are discussed, and the influence of slot width on short-circuit and torque is also investigated.