This paper gives an overview of snubber circuits used in railway traction inverter drives. The discussion is primarily restricted to GTO Voltage Source Inverter (VSI) propulsion equipment. Future trends, including the design targets for IGBT propulsion inverters are also described in this paper. The turn-on and turn-off snubber circuits are designed to limit the GTO dI/dt and dV/dt to around 200 A/microsecond and 500 V/microsecond typically. The stray inductance in the turn-off snubber loop is a critical design parameter. With a maximum permitted value of around 150 nH, this means that correct layout of the inverter leg circuitry is a crucial design requirement.
Snubber circuits for traction drives
Pulsdämpfungsschaltungen in Elektroloks
1994
5 Seiten, 3 Bilder, 1 Tabelle
Aufsatz (Konferenz)
Englisch
Elektrolokomotive , Leistungselektronik , Ausschaltthyristor , Leistungsthyristor , Schutzschaltung , Überspannungsschutz , Überstromschutz , Einschaltstoß , Stoßspannung , Stoßspannungsfestigkeit , Stoßstrom , Wechselrichter , IGBT (insulated gate bipolar transistor) , Streuinduktivität , Anstiegszeit , Impulsform , Dämpfungsglied , Verlustleistung , Systemvergleich , Energierückgewinnung
Snubber energy recovery for a high power traction drive
British Library Conference Proceedings | 1995
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