Standalone hybrid generation system for the remote area of Thar, Pakistan
Dialog Box and Parameters
Number of bridge arms
Determine the bridge topology: one, two, or three arms.
Snubber resistance Rs
The snubber resistance, in ohms (Ω). Set the Snubber resistance Rs parameter to inf to eliminate the
snubbers from the model.
Snubber capacitance Cs
The snubber capacitance, in farads (F). Set the Snubber capacitance Cs parameter to 0 to eliminate the
snubbers, or to inf to get a resistive snubber.
For forced-commutated devices (GTO, IGBT, or MOSFET) the Three-Level
Bridge block operates
satisfactorily with resistive snubbers as long as the firing pulses are sent to the switching devices.
If the firing pulses to forced-commutated devices are blocked, the bridge operates as a diode rectifier.
In this condition, you must use appropriate values of Rs and Cs. If the model is discretized, you can
use the following formulas to compute approximate values of Rs and Cs:
55
Where:-
