随着电力电子技术的发展，变频调速异步电机越来越广泛地应用在各种工业领域。而变频调速系统的使用也给电力电子与电气传动学科带来了新的活力和研究课题，本文从变频调速异步电机的设计出发，首先将传统异步电机的设计方法与变频调速异步电机的设计方法进行了比较。指出了传统异步电机设计方法在变频调速异步电机设计中存在的局限性。同时，本文详细而系统地分析了变频调速异步电机中时间谐波和空间谐波的产生机理，论述了时间谐波和空间谐波对异步电机运行性能的影响，以及对异步电机绝缘系统的损害。-Following with the development of power electronics technology, the inverter-driven induction motor is widely used in all kinds of industry field. The utility of variable frequency and adjustable speed systems brings a new research area and activity of power electronics and motor drive subject, this paper begins with the design of inverter-driven induction motor. Firstly, compare the design method of inverter-driven induction motor with that of conventional induction motor. And point out the limitations of design method of conventional induction motor which is used in the design of inverter-driven induction motor. At the same time, the generation mechanics of time and space harmonics in the inverter-driven induction motor is analyzed in details. The influences of both types of harmonics to the operation of induction motor are described, especially the harm to the insulation structure of induction motor.