Miss Noor Ul Ain

The project demonstrates the speed control of a three-phase induction motor using isolated boost converter. The converter employs the push-pull topology for continuous source current from the renewable solar energy source. To have more gain and high energy density in the dc to dc converter the output voltage of the solar source is boosted up by using a high frequency transformer. Also a voltage feedback loop is implemented in the converter in order to keep the output dc voltage constant. For an efficient speed control of the three-phase induction motor, V/f speed control method is employed with the Space Vector Pulse Width Modulation(SVPWM) technique in the inverter. In parallel, a Variable Frequency Drive(VFD) is made for a three-phase induction motor rated up to 50 hp or below. The VFD is intended to achieve low value of starting current for the motor and also a complete control on the motor�s speed. Real-time power quality monitoring is done using NI my RIO to improve the performance of converter as well as inverter qualitatively and to reduce losses.

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