Computer aided design of induction motor drives

A typical drive system comprises a motor, an inverter and a controller. To limit costs it is necessary to reach a compromise between the performance of each component. By modelling the entire drive system on a computer, the `best´ compromise can be established. To do this requires an easy and meaningful measure of drive performance. One useful approach is to consider the drive as a torque actuator in a control system, and to establish the frequency response of the drive. The computer model described adopts this method. The authors briefly describe the performance analysis method and the simulation program. The results of simulation of a 1.5 kW 4 pole induction motor are discussed