A system includes a direct current (DC) link configured to receive DC power from a first converter that converts alternating current power into DC power. A bidirectional DC-DC converter, electrically connected between the DC link and a DC power source, is configured to convert DC power from a first voltage to a second voltage. The bidirectional DC-DC converter includes multiple switches. A controller is configured to control a switching parameter of the plurality of switches to charge the DC link to a threshold voltage from the DC power source before the first converter provides power to the DC power source. The switching parameter is at least one of a switching frequency and a phase shift. Controlling the switching parameter includes initially setting the switching parameter to a first value and, in response to determining that a set of criteria has been met, adjusting the switching parameter to a second value.
Precharging DC Link Between Battery and Power Connection
2025-07-10
Patent
Electronic Resource
English
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 / 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 |
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