Single Phase AC Voltage Control by Phase Angle Control

Single phase Ac voltage is controlled by 2 ways. The one is phase control, wherever a partial wave form is passed each 0.5 cycle and other is integral cycle control methodology, wherever portion of wave shape is passed to manage the voltage. During this project we have a tendency to uses phase control methodology to manage the voltage. Within the phase controller, the firing pulse is delayed to turn on the semiconductor unit in the each 0.5 cycle. This suggests that each time a part of an AC cycle is cut, the voltage to the load also gets cut. To deliver additional or less voltage to the load, the phase is increased or attenuated, thereby controlling the voltage. There are many ways to manage; we have a tendency to uses the microcontroller to manage the phase. A microcontroller will be programmed to fire device over the full range of cycle to induce a good relationship between the phase and delivered output of voltage.