Mathematical Modeling and Analysis of Different Vector Controlled CSI Fed 3-Phase Induction Motor Drive

Arul Prasanna Mark,Rajasekaran Vairamani,Gerald Christopher Raj Irudayaraj

doi:10.1155/2014/623982

Arul Prasanna Mark, Rajasekaran Vairamani + Show 1 more

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https://doi.org/10.1155/2014/623982

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Abstract

The main objective of this paper is to build a simple mathematical competent model that describes the circuits and interconnections of a 3-phase squirrel cage induction motor used for industrial applications. This paper presents the detailed analysis of theoretical concepts used in mathematical modeling, simulation’ and hardware implementation. The objective of this work is to compare the dynamic performances of the vector control methods for CSI fed IM drives. Based on the results, dynamic performances of the proposed drives are individually analysed using the sensitivity tests. The tests that are chosen for the comparison are step changes in the reference speed and torque of the motor drive. Here the IM is mathematically modeled in different reference frames for input output linearization (IOL) control, field oriented control (FOC), and direct torque control method (DTC) which are designed using hardware equivalent mathematical equations. The most important contributions in this paper are mathematical simulation structure of IM model in rotor flux frame using current and speed that were developed and implemented in MATLAB-Simulink. The operation and performance of the different vector control methods are verified by simulation using MATLAB/SIMULINK and experimental results.

Highlights

The alternating current (AC) motor, especially asynchronous three-phase induction motor (IM), has been the motor of choice in industrial settings for about the past half century as power electronics can be used to control its output behavior
The high performance current source inverter (CSI) fed variable speed drives, especially IM drives have been dominated by various control methods
Brief experimental results are presented for input output linearization (IOL) method and direct torque control (DTC) method using TMS320F2812 DSP based hardware setup

Summary

Introduction

The alternating current (AC) motor, especially asynchronous three-phase induction motor (IM), has been the motor of choice in industrial settings for about the past half century as power electronics can be used to control its output behavior. For variable speed electric motor applications in low to moderate power, pulse width modulation (PWM) with voltage source inverter (VSI) is usually used. Phillips [1], Lipo and Cornell [2], Palaniappan et al [3], Kaimoto et al [4], Krishnan et al [5], Kazmierkowski and Koepcke [6], and Hombu et al [7] tried to develop the CSI and make it suitable for ac motor (especially IM) variable speed drives; since both stator current and voltage waveforms are close to the sinusoidal waveform, the above problems are reduced. The high performance CSI fed variable speed drives, especially IM drives have been dominated by various control methods. IFOC offers similar dynamic torque control performance to that of DC motors, giving fast, near step changes in machine torque

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