Identifier

etd-11092016-113501

Degree

Master of Science in Electrical Engineering (MSEE)

Department

Electrical and Computer Engineering

Document Type

Thesis

Abstract

Induction motors are considered the workhorse in the majority of industrial applications. Their rugged, low-maintenance, and efficient designs keep finding new forms of use nowadays. In this work, power control strategies of induction motor drives based on principles of Direct Torque Control and Model Predictive Control are investigated. The proposed methods control the real and reactive power flow into/out of the machine by selecting and applying proper voltage space phasors to the stator. First, the impact of voltage space phasors on real and reactive power variations is explored. Based on these observations, two methods to choose the appropriate voltage space phasors are proposed based on: six-sector and twelve-sector direct power control, and model predictive power control. Methods to calculate reference and motor powers are then introduced. The presence of high currents during the motor start-up period is analyzed and solutions to limit them are proposed. Finally, simulations using ®Matlab ™Simulink are carried out to test the performance of the control strategies under different operating conditions, including presence of motor parameter variations.

Date

2016

Document Availability at the Time of Submission

Secure the entire work for patent and/or proprietary purposes for a period of one year. Student has submitted appropriate documentation which states: During this period the copyright owner also agrees not to exercise her/his ownership rights, including public use in works, without prior authorization from LSU. At the end of the one year period, either we or LSU may request an automatic extension for one additional year. At the end of the one year secure period (or its extension, if such is requested), the work will be released for access worldwide.

Committee Chair

Farasat, Mehdi

DOI

10.31390/gradschool_theses.4461

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