Thyristor module | thyristor module manufacturers | | thyristor module application

by:Positioning     2021-03-20
Ordinary thyristor module is the most basic purpose is controlled rectifier. The familiar diode rectifier circuit is controlled rectifier circuit. If the diode with silicon controlled rectifier, can constitute a controlled rectifier circuit, inverter, motor speed, motor excitation, non-contact switch and the power control, etc. Now I draw one of the most simple single-phase half-wave controlled rectifier circuit. In sinusoidal ac voltage during the positive half cycle of U2, if VS control no input trigger Ug, VS still can't conduction, only in the U2 in the positive half cycle, in the control and trigger pulse when the Ug, triggered thyristor module conduction. Only in Ug trigger pulse arrives, the load on the RL is output voltage UL Ug come early, thyristor module conduction time is earlier; Ug coming late, thyristor module conduction time is late. By changing the control trigger on Ug arrival time, can adjust the load on the output voltage of average UL ( The area of the shaded part size) 。 In the electrotechnics, often alternating current (ac) half cycle as 180 & deg; , known as the electrical point of view. In U2 are each half cycle, from zero to trigger Angle of arrival instant of electricity is called control Angle alpha; In each SCR module is half weeks conduction Angle of electric conduction Angle theta. Obviously, alpha and theta are used to represent thyristor module in the forward voltage under the half cycle of the scope of the conduction or block. By changing the control Angle alpha or conduction Angle theta, change the pulse dc voltage on load average UL, controlled rectifier is realized. If interested in our silicon controlled rectifier module or there is doubt, welcome your consultation.
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