Speed Control of Induction Motors Utilizing Two-level Inverter with Optimal Controller

This paper presents indirect field-oriented control method for two-level inverter FED induction motor. This research paper offers a simple switching strategy to provide optimized output torque, speed regulation and also, less switching losses. In addition to enabling fast torque and speed response this study also offers constant switching frequency. Conventional Hysteresis current controller has two main drawbacks; the first one is the variation of the switching frequency and the second one is more harmonics in motor currents. The aim of the present paper is to describe a novel switching technique, optimal controller, with the smallest possible tracking error and fixed switching frequency. Modeling and simulation of the proposed method are carried out using MATLAB/SIMULINK.

Keywords:

Hysteresis Current Controller HCC , Optimal Controller , Switching Pattern , Voltage Source Inverter VSI , Indirect Field Oriented Control IFOC , Induction Motor IM , Total Harmonic Distortion THD