Definition ignition angle in thyristor power electronics
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In power electronics, the load (resistance R1 and inductance L1) is fed to the voltage source V1 via thyristor X1.
The principal characteristic of the circuit is that the current is not in phase with the voltage. This fact is due to the inductive component of the load.
The firing pulse is applied to the gate of thyristor X1 (trigger pin) at instant defined as α. It remains in the ON state until the load current tries to go to a negative value. This instant is defined as angle extinction β.
The principal characteristic of the circuit is that the current is not in phase with the voltage. This fact is due to the inductive component of the load.
The firing pulse is applied to the gate of thyristor X1 (trigger pin) at instant defined as α. It remains in the ON state until the load current tries to go to a negative value. This instant is defined as angle extinction β.
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Explanation:
Thyristor power controllers are operated with an alternating voltage in single-phase or three-phase. They are controlled by a controller and vary the activation time of the mains voltage for the load. ... In this operating mode, the controller changes the phase angle α of the thyristor ignition timing.
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