A power conversion apparatus includes a filter capacitor, a contactor to electrically connect the filter capacitor to a power source or electrically disconnect the filter capacitor from the power source, and a failure determiner to determine whether a failure occurs in the contactor. When the contactor is kept closed during a determination period since closing of the contactor and a reduction in the voltage in the filter capacitor during the determination period is greater than or equal to a reference value, the failure determiner determines occurrence of a failure in the contactor.
POWER CONVERSION DEVICE AND FAILURE DETERMINATION METHOD
2022-01-27
Patent
Elektronische Ressource
Englisch
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES |
POWER CONVERSION DEVICE AND FAILURE DETERMINATION METHOD
Europäisches Patentamt | 2020
|Power conversion device and failure determination method
Europäisches Patentamt | 2023
|POWER CONVERSION DEVICE AND FAILURE SYMPTOM DETECTION METHOD
Europäisches Patentamt | 2015
|FAILURE DETECTION DEVICE FOR POWER CONVERSION DEVICE, AND VEHICLE
Europäisches Patentamt | 2018
|CONTACT FAILURE DETERMINATION METHOD AND CONTACT FAILURE DETERMINATION DEVICE
Europäisches Patentamt | 2016
|