| Abstract |
A simulation tool for the dynamic analysis of scalar and vector controlled induction motor is proposed. The tool is builded under the MATLAB with SIMULINK programme environment. The ac drive considered consists of choppered power supply, filters, voltage source inverter, induction motor, mechanical load, controller. Each element of the whole system is represented as a Simulink block and it can be independently simulated or connected to the others in order to analyze their interaction. The tool is used to design and to test the effectiveness of an extended Kalman filter as :flux observer and rotor resistance estimator. Two different solutions to ensure good filter performance in the presence of a low switching frequency inverter are proposed: the variable sampling period technique and the voltage averaging approach. Simulation results on an high power ac drive are also provided. |
