“…As the energy resources shortage and environment protection have become the major challenge for the world, it is imperative to alter the energy and power system for vehicle industry, the electric vehicle has become the essential choice for such alteration [1]. Integrated starter-generator has been widely used in hybrid vehicles to reduce the engine idle fuel consumption by intelligent start-stop controlling, and to increase engine power and economy by auxiliary driving and energy recovering, so as to realize the reduction of exhaust gas pollution and fuel saving effect [2,3,4].…”