Adaptive Optimization of Energy Management Strategy for a Multi-Mode Hybrid Energy Storage System in Electric Vehicles[J]. 2015, 49(12): 130-136.
DOI:
Adaptive Optimization of Energy Management Strategy for a Multi-Mode Hybrid Energy Storage System in Electric Vehicles[J]. 2015, 49(12): 130-136.DOI: 10.7652/xjtuxb201512021.
Adaptive Optimization of Energy Management Strategy for a Multi-Mode Hybrid Energy Storage System in Electric Vehicles
An adaptive optimization method(ADM)for energy management strategy is proposed to improve the efficiency of the multi-mode hybrid energy storage system(HESS)in electric vehicles. The operating modes of the multi-mode HESS are first analyzed
and an adaptive reference voltage of the ultracapacitor(UC)is defined. The objective of optimization focuses on the efficiency of the overall system. And the compensation rules of the battery power output and the ADM for energy management strategy are designed by combining the battery state of charge(SOC)and the UC voltage. A simulation model and an experimental platform are then established. Compared with the multi-mode HESS with the hysteresis control strategy in the UDDS and the NEDC drive cycles show that the ADM improves the overall system efficiency of the multi-mode HESS up to 1.13% and 1.02%
respectively. The multi-mode HESS with the ADM for energy management strategy can not only achieve the adaptive selection of operating modes and the compensation of the battery power output
but also avoid the excessive power output of the battery
so the battery safety is ensured.
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references
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