Speed Control of Dc Motor Using Pi Tuned Buck Converter Fed from PV System

The electrical future moving very fast with continuous changes and less concerned about left out behind us. Deployment of electrical machines are coming as per demand & accordance with application requirement, but does not think about the power quality. Well known by us that without good power quality, any machine could not work efficiently and not take out the best output for the assigned applicable task. So taken into this consideration, we designed a circuit which will be very helpful for operating the electric machine efficiently. Solar PV is used as a main power source attached in the same circuit. Here batteries are used during the day-off time in place of the PV source for the smooth run of the system. PI technique used for switching transistor and flywheel circuit as a DC-DC converter to fed the ripple free power supply to DC Motor. DC-DC buck-boost converter is used in between DC Motor and Solar PV Source. With the control strategy implemented here, speed of dc motor is efficiently controlled and regulated. Result confirm the improvement in rise time and overshoot values.