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Speed control of three-phase induction motor using variable frequency drive

Author: Sagarkumar Patel
Publisher: [Long Beach, California] : California State University, Long Beach, 2018.
Dissertation: M.S. California State University, Long Beach 2018
Series: California State University, Long Beach.; Master's thesis collection, Department of Electrical Engineering.
Edition/Format:   Thesis/dissertation : Document : Thesis/dissertation : eBook   Computer File : English
Summary:
Abstract: There are various methods for speed control of induction motors. This paper specifically describes one of the methods: speed control using variable frequency. The proposed system is a MATLAB simulink model, which is a closed loop model designed to achieve desired speed control of a three-phase induction motor by varying its frequency. The simulink model has four main blocks, namely the inverter,  Read more...
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Details

Genre/Form: Academic theses
Material Type: Document, Thesis/dissertation, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Sagarkumar Patel
ISBN: 9780355669732 0355669730
OCLC Number: 1032008800
Description: 1 online resource (vii, 25 pages) : color illustrations
Series Title: California State University, Long Beach.; Master's thesis collection, Department of Electrical Engineering.
Responsibility: by Sagarkumar Patel.

Abstract:

Abstract: There are various methods for speed control of induction motors. This paper specifically describes one of the methods: speed control using variable frequency. The proposed system is a MATLAB simulink model, which is a closed loop model designed to achieve desired speed control of a three-phase induction motor by varying its frequency. The simulink model has four main blocks, namely the inverter, synchronous machine, proportional integral control and current hysteresis control. For accuracy of output results and simplicity, we have used dq to abc transformation block and sin function block. The inverter is comprised of six integrated gate bipolar transistors (IGBTs), which are fired by gate pulses generated by current hysteresis control block. The inverter generates variable frequency and variable voltage output, which is given to motor terminals. The project presents the working principle of variable frequency drive (VFD), its performance, and the use of Pulse Width Modulation (PWM) in a three-phase inverter to control the frequency and thus the speed. The proposed method conformed to performance predictions and delivered the desired outputs.

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