An auxiliary power supply device (40) includes a capacitor (45) that is connected to a main power source (4), and that is able to discharge an electric current to an electric motor (21), the main power source (4) supplying electric power to the electric motor (21); and a booster circuit (43) that boosts a voltage of the main power source (4) and applies the boosted voltage to the auxiliary power source (43). An operation of the auxiliary power supply device (40) is controlled by a control device (30). When supply of the electric power from the main power source (4) to the capacitor (45) is started in a state where a voltage across terminals of the capacitor (45) (capacitor voltage V2) is equal to or higher than a voltage of the main power source (4), the control device (30) increases the voltage (boosted voltage V3) applied to the capacitor (45) by the booster circuit (43) as the capacitor voltage (V2) increases.
Auxiliary power supply device and electric power steering system including auxiliary power supply device
Hilfsstromversorgungsvorrichtung und elektrisches Servolenkungssystem mit Hilfsstromversorgungsvorrichtung
Dispositif d'alimentation électrique auxiliaire et système de direction assistée électrique comprenant un dispositif d'alimentation électrique auxiliaire
2015-12-23
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge / 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 / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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