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Speed Torque Control Of single Phase Induction Motor Using Solid State Converter |
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General Description For The Project:
The project aims to operate a single phase induction motor (SPIM) as two phase induction motor , with purpose to run the motor at two windings instead of one running winding only . So the team designed and built a two phase solid state converter to drive the motor , where the converter is controlled by pulse width modulated sinusoidal (PWMS) generated by Matlab. It achieves 90 electrical degrees phase shift between the motor two currents . A closed loop control system is designed to control the motor speed. The motor is simulated using MATLAB software. The system is tested experimentally using Matlab and simplorer programs, some experimental results are presented.
Project Significance : The following can be achieved
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Operating the motor without need of
additional mechanical switching components, therefore reducing the mechanical elements
in such motors .
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Operating
the motor without need to start and run capacitors.
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Increasing
the starting and the rated torque of the motor with purpose to carry
heavy loads at starting.
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Increasing the motor efficiency through
improving the phase shift between the motor windings to be closed at approximately
90 dg time shifting, and reducing the flux harmonics and torque pulsations .
·
The
motor speed is controlled to operate in a wide speed range . So it will be significant
in the applications operates at variable speed modes.
Because of ruggedness and low price, single-phase induction motors are widely used
in several commercial and domestic applications. Although their performance is inferior when compared to that of poly-phase induction motors, they are still commonly used in small ratings where the three-phase supply is not usually available.
Some Applications:
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Heating, ventilation, and air conditioning (HVAC) .Which
needs variable speed modes
to minimize power consumption.
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Low power industrial plants.
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Widely used in households.
For More Information
Deanship of
Scientific Research
Power Electronic and Signal Processing Research Unit (PESPRU)
Dr. Sameer Khader ( Unit Director )
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