An optimal control strategy for a distributed low voltage system with unidirectional DC/DC converters is provided. DC/DC converters regulate high electrical voltages from high voltage battery modules and output regulated electrical currents to a low voltage battery. A control system differentially varies electrical currents input to the DC/DC converters to balance states of charge in high voltage battery modules, by: calculating sets of electrical currents that balance states of charge in high voltage battery modules based on values for a low voltage regulator electrical current, in advance to knowing a value for the low voltage regulator electrical current, interpolating the sets of electrical currents to be input to the DC/DC converters in response to receiving the value for low voltage regulator electrical current, and selecting an interpolated set of the electrical currents from the sets as input to the DC/DC converters in accordance with the value received.
Optimal control strategy for a distributed low voltage system with unidirectional direct current converters
2024-05-21
Patent
Elektronische Ressource
Englisch
IPC: | 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 |
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