A charger compatible with 1 phase and 3 phase supplies. With a 1 phase supply, the 1 phase source is connected between two of the three input lines of the charger. Each of the three input lines is coupled to an LCL filter 20 comprising grid and converter inductors with a filter capacitor between them. Each of the LCL filter legs is coupled to a respective leg of a 3 phase rectifier 30. With a 1 phase input, the three legs work in an unbalanced technique to control the power flow into the LCL filter to compensate the double-line frequency power pulsation. With a 1 phase input, when the rectifier is driven by a Space Vector Pulse Width 10 Modulation (SVPWM) scheme, the modulation range and DC voltage utilization of the charger is increased. The charger may be an on board charger for an electric vehicle.
A charger
2021-08-11
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
CHARGER SELECTION SYSTEM, CHARGER SELECTION METHOD, AND CHARGER SELECTION PROGRAM
European Patent Office | 2022
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