The application of CASED as a simulation tool for design and analysis of variable speed drives

Abstract

The features of a new simulation package called CASED are addressed. This simulation package was developed specifically for the analysis of a wide variety of complete variable speed drive systems. A model developed in CASED for a current-source inverter(CSI)-fed induction motor under indirect Field Oriented Control VOC) is described. The CSI model includes rectifier, inverter and induction motor dynamics. The simulated system has been implemented on a transputer based drive controller development platform and the practical results conlirm the validity of the simulation model. The power of CASED as a drive analyisis and design tool is then illustrated by way of investigating some of the more common problems facing the design and application engineer in a drive environment.