An electric leakage detecting device of an in-vehicle power supply system includes a detection signal generating unit which applies AC voltage to a voltage applying point on an electric cable connecting a power converting circuit which converts power from a power source to AC power to supply to a motor to the power source; a voltage measuring unit which measures voltage at a voltage measuring point between the detection signal generating unit and the voltage applying point; and an electric leakage detecting unit which detects whether there is electric leakage between the power converting circuit and the motor according to the voltage at the voltage measuring point measured by the voltage measuring unit when a control device of the motor provides an instruction to maintain a rotational angle constant to the motor.
Leckstrom-Nachweisvorrichtung für Fahrzeuginternes Stromversorgungssytem und Hydraulikbagger
2017-04-27
Patent
Electronic Resource
German
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / E02F Baggern , DREDGING / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 |
European Patent Office | 2020
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