Snubber Capacitor. A snubber capacitor is a capacitor that is connected to a large current switching node for the purpose of reducing the parasitic inductance of electric wiring. The simplest snubber network is a series rc circuit at the switch node fig.
Snubbers are any of several simple energy absorbing circuits used to eliminate voltage spikes caused by circuit inductance when a switch either mechanical or semi conductor opens. Power systems containing igbts must be designed so the transient voltage caused by the high di dt that occurs at gate turn off is minimized. Snubber capacitors have also undergone changes in construction enabling increased power handling capability.
The capacitor prevents dc currents from flowing.
This charge focuses on giving the reader a brief overview on the igbt snubber capacitor. This combination can be used to suppress the rapid rise in voltage across a thyristor preventing the erroneous turn on of the thyristor. A resistor capacitor snubber helps to suppress peak voltage and minimize ringing. Snubbers are any of several simple energy absorbing circuits used to eliminate voltage spikes caused by circuit inductance when a switch either mechanical or semi conductor opens.
