Solid State Tape Changer for Utility Transformer

The on load tap changing regulator have been used in wearies industries & power application they ensures good regulation of the output voltage in proses larger changes of the input voltage they are time form mile second to several seconds. The mechanical type tap changers were into practice. But they had considerable limitations arcing, high maintenance, service costs and slow reaction times. In limitations and drawbacks reducing using electronic equipment in solid state tap changers are developed. The continuous growth of semiconductor devices, such as using insulated gate bipolar transistor, solid state relay has allowed the development of fast on load tape changer regulators which has help to fix other problems in the ac mains, like sags. The actually idea in the solid state tap changer for utility transformer is that using solid state switches and best control ability operate during the tap changing process instead of mechanical switches which helps in reducing the arc during the tap changing process.