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Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
Faculty of Technology >
Thesis - Electrical Engineering >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/2812
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| Title: | DSP BASED FIELD WEAKENING CONTROL OF PMSM |
| Authors: | Dereje, Shibeshi |
| Advisors: | Dr. Mengesha Mamo |
| Keywords: | PMSM
vector control
field weakening,
SVPWM |
| Copyright: | Oct-2007 |
| Date Added: | 8-May-2012 |
| Publisher: | AAU |
| 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. |
| URI: | http://hdl.handle.net/123456789/2812 |
| Appears in: | Thesis - Electrical Engineering
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