Computer Aided Simulation for the Dynamic Analysis of Indirect Vector Controlled Induction Motor Drive Systems

Abstract

There is a growing demand for the indirect vector controlled induction motor drive sys-tems for diverse industrial applications such as machine tools, robotics, spindle drives, etc. due to its ease of control. A considerable amount of research led to the development of a systematic model for the drive system. While a number of software packages have been developed in-house at research and industrial centers, there is a lack of a user-friendly, menu driven, interactive CAD package which can be used universally by drives engineers. The current environment in the work place necessitates the involvement of more than one engineer for the development of any drive system. This enhances the need for a CAD package capable of performing the simulation of the drive system including the motor, load, inverter and the controllers while at the same time providing the feature to modify each subsystem inde-pendently. The ability to simulate the interaction of the subsystems would reduce the production cost and development time. An effort has been made to fill the need for an interactive simulation to assess the torque ripple, losses, efficiency, torque and speed responses and their bandwidth and the suitability of the drive system for a particular application. Such a CAD package, VCIM, has been developed by the authors and key results using the package are presented to highlight the implemented features. The system is under evaluation at major industrial research and development centers in USA