An optimal control strategy for a distributed low voltage system with unidirectional DC/DC converters of a vehicle system is presented. The DC/DC converter regulates the high voltage from the high voltage battery module and outputs the regulated current to the low voltage battery. The control system differentially varies the current input to the DC/DC converter to balance the state of charge in the high-voltage battery module by: calculating sets of currents that balance the state of charge in the high-voltage battery module based on the value of the low-voltage regulator current before knowing the value of the low-voltage regulator current; interpolating several sets of currents to be input to the DC/DC converter in response to receiving the value of the low voltage regulator current; and selecting an interpolated set of currents from the several sets as an input of the DC/DC converter according to the received values.
提出了一种车辆系统的具有单向DC/DC变换器的分布式低电压系统的最优控制策略。DC/DC转换器调节来自高电压电池模块的高电压,并将调节的电流输出到低电压电池。控制系统差分地改变输入到DC/DC转换器的电流以通过以下方式平衡高电压电池模块中的荷电状态:在知道低电压调节器电流的值之前,基于低电压调节器电流的值计算平衡高电压电池模块中的荷电状态的几组电流;响应于接收到低电压调节器电流的值,对要输入到DC/DC转换器的几组电流进行插值;以及根据所接收的值从所述几组中选择插值的一组电流作为所述DC/DC转换器的输入。
Optimal control strategy for distributed low voltage system with unidirectional DC converter
具有单向直流变换器的分布式低电压系统的最优控制策略
2024-08-16
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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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