Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs

M. Muneeb Ur Rehman; Fan Zhang; Michael Evzelman; Regan Zane; Dragan Maksimovic

doi:10.1109/COMPEL.2015.7236506

Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs

M. Muneeb Ur Rehman, Fan Zhang, Michael Evzelman, Regan Zane, Dragan Maksimovic

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

37 Scopus citations

Abstract

Cell balancing circuits are required in battery packs to equalize the state-of-charge (SOC) of series-connected cells. This paper presents a control strategy for a modular cell balancing architecture based on low-voltage bypass dc-dc converters that perform real-time active cell balancing using a shared low-voltage (LV) bus. Each bypass converter includes an autonomous controller, which employs a faster loop with a standard PI compensator to regulate the LV bus voltage and a slower loop with droop control to regulate SOC of each cell. The control strategy results in balanced LV load current sharing among bypass converters. Design and stability analysis details are provided for the cell balancing system and bypass converters. The control approach is verified by experimental results for a three series-connected Li-ion NMC battery cell system with three digitally controlled dual-active bridge bypass converters.

Original language	English
Title of host publication	2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015
Publisher	Institute of Electrical and Electronics Engineers
ISBN (Electronic)	9781467368476
DOIs	https://doi.org/10.1109/COMPEL.2015.7236506
State	Published - 1 Sep 2015
Externally published	Yes
Event	16th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2015 - Vancouver, Canada Duration: 12 Jul 2015 → 15 Jul 2015

Publication series

Name	2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015

Conference

Conference	16th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2015
Country/Territory	Canada
City	Vancouver
Period	12/07/15 → 15/07/15

ASJC Scopus subject areas

Energy Engineering and Power Technology
Control and Systems Engineering
Modeling and Simulation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/COMPEL.2015.7236506

Cite this

Ur Rehman, M. M., Zhang, F., Evzelman, M., Zane, R., & Maksimovic, D. (2015). Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs. In 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015 Article 7236506 (2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/COMPEL.2015.7236506

Ur Rehman, M. Muneeb ; Zhang, Fan ; Evzelman, Michael et al. / Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs. 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015. Institute of Electrical and Electronics Engineers, 2015. (2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015).

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title = "Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs",

abstract = "Cell balancing circuits are required in battery packs to equalize the state-of-charge (SOC) of series-connected cells. This paper presents a control strategy for a modular cell balancing architecture based on low-voltage bypass dc-dc converters that perform real-time active cell balancing using a shared low-voltage (LV) bus. Each bypass converter includes an autonomous controller, which employs a faster loop with a standard PI compensator to regulate the LV bus voltage and a slower loop with droop control to regulate SOC of each cell. The control strategy results in balanced LV load current sharing among bypass converters. Design and stability analysis details are provided for the cell balancing system and bypass converters. The control approach is verified by experimental results for a three series-connected Li-ion NMC battery cell system with three digitally controlled dual-active bridge bypass converters.",

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Ur Rehman, MM, Zhang, F, Evzelman, M, Zane, R & Maksimovic, D 2015, Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs. in 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015., 7236506, 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015, Institute of Electrical and Electronics Engineers, 16th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2015, Vancouver, Canada, 12/07/15. https://doi.org/10.1109/COMPEL.2015.7236506

Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs. / Ur Rehman, M. Muneeb; Zhang, Fan; Evzelman, Michael et al.
2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015. Institute of Electrical and Electronics Engineers, 2015. 7236506 (2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Maksimovic, Dragan

PY - 2015/9/1

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N2 - Cell balancing circuits are required in battery packs to equalize the state-of-charge (SOC) of series-connected cells. This paper presents a control strategy for a modular cell balancing architecture based on low-voltage bypass dc-dc converters that perform real-time active cell balancing using a shared low-voltage (LV) bus. Each bypass converter includes an autonomous controller, which employs a faster loop with a standard PI compensator to regulate the LV bus voltage and a slower loop with droop control to regulate SOC of each cell. The control strategy results in balanced LV load current sharing among bypass converters. Design and stability analysis details are provided for the cell balancing system and bypass converters. The control approach is verified by experimental results for a three series-connected Li-ion NMC battery cell system with three digitally controlled dual-active bridge bypass converters.

AB - Cell balancing circuits are required in battery packs to equalize the state-of-charge (SOC) of series-connected cells. This paper presents a control strategy for a modular cell balancing architecture based on low-voltage bypass dc-dc converters that perform real-time active cell balancing using a shared low-voltage (LV) bus. Each bypass converter includes an autonomous controller, which employs a faster loop with a standard PI compensator to regulate the LV bus voltage and a slower loop with droop control to regulate SOC of each cell. The control strategy results in balanced LV load current sharing among bypass converters. Design and stability analysis details are provided for the cell balancing system and bypass converters. The control approach is verified by experimental results for a three series-connected Li-ion NMC battery cell system with three digitally controlled dual-active bridge bypass converters.

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Ur Rehman MM, Zhang F, Evzelman M, Zane R, Maksimovic D. Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs. In 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015. Institute of Electrical and Electronics Engineers. 2015. 7236506. (2015 IEEE 16th Workshop on Control and Modeling for Power Electronics, COMPEL 2015). doi: 10.1109/COMPEL.2015.7236506

Control of a series-input, parallel-output cell balancing system for electric vehicle battery packs

Abstract

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ASJC Scopus subject areas

UN SDGs

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