Capacitor Bank Type Power Factor Control System

In a sine wave or other simple waveform, this normally occurs twice during each cycle The zero-crossing is important for systems which send digital data over AC circuits, In a system where an amplifier with digitally-controlled gain is applied to an input signal, signal artifacts will occur when the gain of the amplifier abruptly switches between its discrete gain settings while outputting a non-zero current.. Artifacts are disconcerting and clearly not desirable. If changes are made at a zero-crossing of the signal, the input is zero, so no matter how the amplifier gain setting changes, the output will also remain at zero. The zero-crossing of the mains voltage is the key to determining the proper switching time (phase angle) in both leading edge and trailing edge dimmers. Here the zero crossing detector detects the power factor values that is voltages and currents and sends the signal to the microcontroller and accordingly the switches are made ON/OFF. On the LCD the ON condition of capacitors is displayed. Hence by using bank of capacitors the power factor control is achieved.

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