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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1500

Authors: Dereje, Shibeshi
Advisors: Dr. Mengesha Mamo
Keywords: PMSM
vector control
field weakening
Copyright: 2007
Date Added: 18-Oct-2008
Publisher: Addis Ababa University
Abstract: This thesis deals with control of PMSM (Permanent Magnet Synchronous Motor) with field weakening capability using DSP board and simulation using Matlab/Simulink. The practical part will only cover up to open loop control due to the failure of some I/O pins for PWM output. A PMSM motor model has been analyzed in order to control the motor both in the constant-torque (constant flux) and in the constant-volt-ampere (flux weakening) regions. A flux-weakening technique is applied when extension of the motor speed beyond base speed is desired. The field-oriented control, with its flux/torque decoupling feature is realized with a digital PWM controller in rotating d-q coordinate system. This kind of control requires a relatively powerful microprocessor along with the relevant peripherals to make vector control a practical proposition. The DSP board used, TDS2407 EA is designed for such drive application. Simulation results demonstrate that the speed range of the surface mounted PMSM use can be extended up to approximately 350 rpm by field weakening while the speed is limited to 175 rpm without field weakening.
Description: A thesis submitted to the School of Graduate Studies in partial fulfillment of the requirement for the degree of Master of Science in Electrical and Computer Engineering (Control)
URI: http://hdl.handle.net/123456789/1500
Appears in:Thesis - Computer Engineering

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