Desing & modeling of scr based controller for speed control of single phase induction motor

This concept of restriction on the power supplied to a device is known as AC power control. AC power control allows us to efficiently use the available power for various applications. There are two types of AC power control: ON-OFF control or pulse skipping modulation control and phase angle control. In on-off control, the load is connected to the AC supply for short interval of time and the AC supply is switched off for some interval. A fast switching device like a thyristor is used to connect and disconnect the load to the AC power supply. In phase method, the load is connected to the AC supply for a specific period of both the half cycles. Firing angle control based AC power control is designed here which is a type of phase angle control. The circuit regulates the AC power supplied to any load like an electric bulb, motor, amplifier etc.