A discharge device (11) and method for actively discharging a main capacitor (C filter ); a discharge branch (13) is connected in parallel to the main capacitor (C filter ) and is provided with a discharge transistor (TD); a control device (14) is connected to the gate/base terminal of the discharge transistor (TD), controls the discharge transistor (TD) by biasing the discharge transistor (TD) to conduction mode when discharging the main capacitor (C filter ) is required, and has a safety capacitor (C safe ) which is interposed between the gate/base terminal of the discharge transistor (TD) and a power source which is charged when the discharge transistor (TD) is biased to conduction mode, thus determining a progressive reduction of the voltage/current at the gate/base terminal of the discharge transistor (TD) to bias the transistor (TD) to the isolated state after a time interval from the starting instant of the conduction of the discharge transistor (TD).
Apparatus and method for discharging a capacitor for use in the electric power system of a vehicle with electric drive
Vorrichtung und Verfahren zum Entladen eines Kondensators zur Verwendung im Stromversorgungssystem eines Elektrofahrzeugs
Dispositif et procédé pour décharger un condensateur destiné à être utilisé dans le système d'alimentation électrique d'un véhicule à entraînement électrique
2017-06-21
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H03K PULSE TECHNIQUE , Impulstechnik |
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