This blog post summarize Single Phase Semi Controlled Rectifier using TMS320F28027F
Introduction of Single Phase Semi Controlled Rectifier
Single Phase Semi Controlled Rectifier is used to convert the AC voltage to DC voltage, both the positive and Negative half cycle are converted. This circuit includes two SCR`s and two Diodes for this operation. One SCR and one diode conducts for positive half cycle and other one SCR and diode conducts for negative half cycle to convert the AC voltage to DC voltage.
Working of Single Phase Semi Controlled Rectifier
Here the above diagram shows the Single Phase Semi Controlled Rectifier which converts the AC voltage source to DC voltage.
In positive half cycle SCR T1 is triggered and diode D2 conducts in forward bias, In negative half cycle SCR T3 is triggered and diode D1 Conducts in forward bias, T1 and T3 turns OFF, when the input voltage to SCR reaches zero. Hence by using Zero Crossing Detection method, the pulse applied to SCR is derived from the input AC voltage.