Half wave rectifier Thyristor Three phase

Thyristor half-wave rectifier circuit with three three-phase thyristor Q1, Q2 and Q3. The third cathode Thyristor incorporated into the terminal positive, negative terminal of the neutral wire N, with a resistive load RL. Each thyristor get ignition pulses of different through UG1, UG2, UG3. Three-phase rectifier is used to obtain the average value of a higher output voltage with frequencies higher than one phase rectifier. Applications used in settings with high power DC motors. DC voltage generated through a resistive load R.
Negative direct current back to the secondary transformer through the wire N. DC voltage generated contains a ripple. Since each phase different input voltage is 120 degrees, then the pulse ignition is given by the phase difference of 120 degrees. On resistive load, angle setting ignition trigger from 0 degrees to 150 degrees. to inductive load firing angle setting between 0 degrees to 90 degrees.

 Equation voltage at resistive load:
 Uda : Unidirectional control voltage
 Udo   : DC Voltage Diode
U     : Effective voltage
 a      : Gate firing angle

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