NVH performance study of centralized motor driven vehicle power train

In the form of a literature review,the paper presents recent research on vibration and noise of electric vehicles. Considered features of centralized driven electric vehicle power train,five areas are described,namely study on torsion vibration of power train systems,magnetism and solid coupling vibration power assembly,torque fluctuation of driven motor,power assembly mounting system and the power train mechanical and electrical integration. Finally,outlook study work in this area is given.