Thyristor Based Dual Conversion

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Thyristor Based Dual Conversion

The project is a control system for power electronics that achieves polarity DC from AC rectification using forward and reverse converter. Thus Dc motor can be moved in both directions and the speed can also be controlled. Thyristor controlled bridge is used for the purpose of achieving DC motor reverse polarity for either direction rotation, in single phase converter. The speed is reduced by microcontroller gradually that triggers each bridge SCR bank which is interfaced through opto-isolators. Switches interfaced to microcontroller are used for providing input to microcontroller. For instance, if 230V AC is given as input to dual SCR Bridge and 100Watt lamp load is used, DC polarity is checked across lamp.

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