A system for controlling a charging current while transferring energy from a source battery to a target battery in an electric vehicle (EV) comprises a four-switch buck-boost converter configured to couple to the source battery and the target battery and configured to operate in (i) a buck mode, in which voltage Vg across the source battery is higher than voltage VEV across the target battery, (ii) a boost mode, in which the voltage Vg is lower than the voltage VEV, and (iii) a buck-boost mode, in which the buck-boost converter operates between the buck mode and the boost mode, and in which the voltages VEV and Vg differ less by a predetermined amount, and a controller configured to, when transitioning to or from the buck-boost mode, instantaneously adjust at least one a buck duty cycle dbuck or a boost duty cycle dboost according to a predefined value.
Control Strategy for the Charge Current in a Buck-Boost Converter
24.07.2025
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 |
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