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Volume 15
Issue 19
10.3390/en15197226
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Article

Balanced Control System Based on Bidirectional Flyback DC Converter

by
Dongchen Qin
,
Shuai Qin
*,
Tingting Wang
,
Hongxia Wu
and
Jiangyi Chen
School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
*
Author to whom correspondence should be addressed.
Energies 2022, 15(19), 7226; https://doi.org/10.3390/en15197226
Submission received: 26 July 2022 / Revised: 23 September 2022 / Accepted: 26 September 2022 / Published: 1 October 2022
(This article belongs to the Special Issue Electric Vehicles Power Train, Storage and Charging: Design, Modelling and Simulation)
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Abstract

The inconsistency of the battery pack will cause the “barrel effect“ when the battery pack is working. The battery with lower power will first reach the discharge cut-off condition, resulting in the battery pack not being fully discharged, reducing the battery utilization rate. This paper uses the state of charge (SOC) as an equilibrium variable and the forgetting factor recursive least square–extended Kalman filter (FFRLS-EKF) method to estimate the SOC. Using a balanced topology based on a bidirectional impact direct current (DC) converter, the energy transfer can occur between any battery and only between batteries that need to be balanced, increasing energy utilization and the effect of equalization. The equalization system is simulated under various conditions, which proves the effectiveness of the equalization control system.
Keywords: lithium-ion battery; bidirectional flyback DC converter; balanced control strategy; availability energy lithium-ion battery; bidirectional flyback DC converter; balanced control strategy; availability energy

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MDPI and ACS Style

Qin, D.; Qin, S.; Wang, T.; Wu, H.; Chen, J. Balanced Control System Based on Bidirectional Flyback DC Converter. Energies 2022, 15, 7226. https://doi.org/10.3390/en15197226

AMA Style

Qin D, Qin S, Wang T, Wu H, Chen J. Balanced Control System Based on Bidirectional Flyback DC Converter. Energies. 2022; 15(19):7226. https://doi.org/10.3390/en15197226

Chicago/Turabian Style

Qin, Dongchen, Shuai Qin, Tingting Wang, Hongxia Wu, and Jiangyi Chen. 2022. "Balanced Control System Based on Bidirectional Flyback DC Converter" Energies 15, no. 19: 7226. https://doi.org/10.3390/en15197226

APA Style

Qin, D., Qin, S., Wang, T., Wu, H., & Chen, J. (2022). Balanced Control System Based on Bidirectional Flyback DC Converter. Energies, 15(19), 7226. https://doi.org/10.3390/en15197226

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