Energy Recovery and Utilization Efficiency Improvement for Motor-Driven System Using Dynamic Energy Distribution Method

The hybrid energy storage system with the battery as the main energy source and the supercapacitor as the auxiliary energy source has been widely applied in the motor-driven system. However, the uncoordinated distribution of energy between energy storage units would cause unnecessary energy loss in...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2022-10, Vol.71 (10), p.10327-10336
Main Authors: Wang, Xiaoji, Zhang, Hongjuan, Sun, Shizhen, Gao, Yan, Jin, Baoquan
Format: Article
Language:English
Subjects:
Batteries
Control systems
DC motors
Efficiency
Electric converters
Electric power distribution
Energy distribution
Energy flow
Energy loss
Energy recovery
Energy sources
Energy storage
hybrid energy storage system
Hybrid systems
motor-driven system
Optimization
power tracking control
Prediction models
State of charge
Storage units
Supercapacitors
Topology
Tracking control
Utilization
Voltage converters (DC to DC)
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Summary:The hybrid energy storage system with the battery as the main energy source and the supercapacitor as the auxiliary energy source has been widely applied in the motor-driven system. However, the uncoordinated distribution of energy between energy storage units would cause unnecessary energy loss in the system. The energy recovery and utilization efficiency of the system needs to be further improved. In this paper, a power tracking control strategy considering total energy loss is proposed. The energy flow path of the motoring or generating process is investigated. The energy loss prediction models of the battery, the supercapacitor and the bidirectional DC/DC converter are established, respectively. Afterward, the objective optimization control function is deduced from the perspective of the minimum comprehensive energy loss. Dynamic power distribution ratios are obtained under the constraints. The superiorities of the supercapacitor are fully utilized and the dynamic supply-demand power balance is maintained. The results of simulations and experiments verify that energy recovery and utilization efficiency of the system is increased by 26.4% using the proposed control strategy in one running cycle.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2022.3187051