Question

Difference between on-off control and phase control

Answer 1

Explanation:

• In on-off control, thyristor switches connect the load to the ac source for a few cycles of the input voltage and then disconnected for a feww cycles
• In phase control, thyristor switches connect the load to the ac source tor a portion of each cycle

Answer 2

Answer:

Thyristor switches are used in on-off control to connect the load to the ac source for a few input voltage cycles before disconnecting it for a similar number of cycles. Thyristor switches in phase control link the load to the ac supply for a portion of each cycle.

Explanation:

Thyristor switches are used in on-off control to connect the load to the ac source for a few input voltage cycles before disconnecting it for a similar number of cycles.

With On-Off Control, the final control element (FCE) is either fully open or totally closed by assigning the Controller Output (CO) to one of two places, as the name suggests. There is no middle ground, as opposed to PID control or intermediate value.

A technique for power limiting used with AC voltages is called phase-fired control (PFC), sometimes known as phase cutting or "phase angle control." A thyristor, SCR, triac, thyratron, or other similar gated diode-like device is modulated into and out of conduction at a predefined phase of the applied waveform to get the desired result.

To learn more about phase control, visit:

https://brainly.in/question/2456509

https://brainly.in/question/2077678

#SPJ2