摘要
HIGH-performance electric machines and drives(EMDs)have found extensive applications where characteristics,such as high power density,high efficiency,high reliability,high precision,good environmental adaptability,and low emission,are sorely demanded.The design and control of such high-performance EMDs pose some unique challenges due to the increased electromagnetic load,thermal load,and mechanical stresses exerted on different materials and components of the system.Moreover,the condition monitoring becomes a more important aspect for the high-performance EMDs because of small design margins and the high values of the applications in general.