Proceedings of the 3rd International Conference on Mechatronics Engineering and Information Technology (ICMEIT 2019)

Power Distribution Strategy for Electric Vehicle Hybrid Power System

Authors
Xia Chen, Xinru Wang, Jinying Li, Di Wang, Yang Gao
Corresponding Author
Xinru Wang
Available Online April 2019.
DOI
https://doi.org/10.2991/icmeit-19.2019.116How to use a DOI?
Keywords
electric vehicles; lithium battery; Super-capacitor; hybrid power system; adaptation; power distribution.
Abstract
Aiming at the load power fluctuates greatly during the driving process of the electric vehicles, a large load current is required, it is difficult to meet the load demand by the lithium battery alone, so the super-capacitor is introduced. In order to give full play to advantages of both, and to reduce the transient high current fluctuation of lithium battery, a power allocation strategy based on adaptive frequency is proposed. The power supply current, super-capacitor and bus voltage are controlled with double closed-loop control, and the filter time constant is dynamically adjusted according to the state of charge and load requirements of the super-capacitor, the battery bears the low-frequency component of the load current, and the super-capacitor provides the residual component, therefore, the charge and discharge current of the battery can be reduced and reducing the large current fluctuation. The Matlab/Simulink the results show that the method fully utilizes the super-capacitor smooth load fluctuation, which effectively reduces the charge and discharge current of the lithium battery and reduces the fluctuation range, thus prolonging the service life.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Proceedings
3rd International Conference on Mechatronics Engineering and Information Technology (ICMEIT 2019)
Part of series
Advances in Computer Science Research
Publication Date
April 2019
ISBN
978-94-6252-708-9
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmeit-19.2019.116How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Xia Chen
AU  - Xinru Wang
AU  - Jinying Li
AU  - Di Wang
AU  - Yang Gao
PY  - 2019/04
DA  - 2019/04
TI  - Power Distribution Strategy for Electric Vehicle Hybrid Power System
BT  - 3rd International Conference on Mechatronics Engineering and Information Technology (ICMEIT 2019)
PB  - Atlantis Press
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmeit-19.2019.116
DO  - https://doi.org/10.2991/icmeit-19.2019.116
ID  - Chen2019/04
ER  -