Analysis and estimation of the maximum circulating current during the parallel operation of reconfigurable battery systems
Paper in proceeding, 2020

Reconfigurable battery systems (RBSs) are emerging as a promising solution to safe, efficient, and robust energy storage and delivery through dynamically adjusting the battery connection topology. When the system connection is switched from series to parallel, circulating currents between parallel battery cells/modules can be triggered due to their voltage imbalance. During the hardware design of an RBS, the current rating of associated components, such as batteries, switches, and wires, depends on the maximum circulating currents. Moreover, given a developed RBS, the maximum circulating current also determines whether it is feasible to perform the relevant system reconfiguration. Thus, this paper is focused on modeling and analyzing the current distribution during the series-to-parallel battery reconfiguration and estimating the maximum circulating currents as well as their upper bound under various system states and operating scenarios. A prototype is set up to experimentally verify the effectiveness of the proposed method for estimating the maximum circulating currents.

Author

Weiji Han

Chalmers, Electrical Engineering, Systems and control

Anton Kersten

Chalmers, Electrical Engineering, Electric Power Engineering

2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020

229-234 9161478

2020 IEEE Transportation Electrification Conference and Expo, ITEC 2020
Chicago, USA,

Loss and EMI reduction in electrified vehicle through the usage of a multilevel converter

Swedish Energy Agency (44807-1), 2017-07-01 -- 2021-12-31.

Areas of Advance

Transport

Energy

Subject Categories

Vehicle Engineering

Electrical Engineering, Electronic Engineering, Information Engineering

Energy Systems

Control Engineering

Mathematical Analysis

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ITEC48692.2020.9161478

More information

Latest update

11/7/2021