An Optimization Framework for Dynamically Reconfigurable Battery Systems

Lin, Ning; Ci, Song; Wu, Dalei; Guo, Haifeng

doi:10.1109/tec.2018.2850853

Cited by 33 publications

(20 citation statements)

References 12 publications

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“…When it is desired to optimize the overall system performance across successive control periods, as in [34], [38], [42], [44], and [59], the system evolution has to be considered, including the time-varying OCVs, SoCs, and total available charge or energy of the cells. To take this into account, a dynamic system model needs to be appended to the optimization problem as a constraint.…”

Section: Optimization Algorithms Based On Reconfigurationmentioning

confidence: 99%

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Han

Wik

Kersten

et al. 2020

EEE Ind. Electron. Mag.

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Section: Optimization Algorithms Based On Reconfigurationmentioning

confidence: 99%

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Han

Wik

Kersten

et al. 2020

EEE Ind. Electron. Mag.

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“…When it is desired to optimize the overall system performance across successive control periods, as in [34,38,42,44,59], the system evolution over these periods has to be considered, such as the time-varying OCVs, SoCs, and total available charge or energy of the cells. To take this into account, a dynamic system model has to be appended to the optimization problem as a constraint.…”

Section: B Optimization Algorithms Based On Reconfigurationmentioning

confidence: 99%

“…The problems proposed in [34,42,44,59] are all solved by DP, a common tool for solving multistage optimization problems. When solving these optimal control problems formulated for RBSs, the computational time and memory requirements are influenced by a number of factors, such as the system dimension, model nonlinearity, number of feasible configurations, and control horizon.…”

Section: B Optimization Algorithms Based On Reconfigurationmentioning

confidence: 99%

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Han¹,

Wik²,

Kersten³

et al. 2020

Preprint

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<div>Batteries are widely applied to the energy storage and power supply in portable electronics, transportation, power systems, communication networks, etc. They are particularly demanded in the emerging technologies of vehicle electrification and renewable energy integration for a green and sustainable society. To meet various voltage, power, and energy requirements in large-scale applications, multiple battery cells have to be connected in series and/or parallel. While battery technology has advanced significantly in the past decade, existing battery management systems (BMSs) mainly focus on state monitoring and control of battery systems packed in fixed configurations. In fixed configurations, though, the battery system performance is in principle limited by the weakest cells, which can leave large parts severely underutilized. Allowing dynamic reconfiguration of battery cells, on the other hand, allows individual and flexible manipulation of the battery system at cell, module, and pack levels, which may open up a new paradigm for battery management. Following this trend, this paper provides an overview of next-generation BMSs featuring dynamic reconfiguration. Motivated by numerous potential benefits of reconfigurable battery systems (RBSs), the hardware designs, management principles, and optimization algorithms for RBSs are sequentially and systematically discussed. Theoretical and practical challenges during the design and implementation of RBSs are highlighted in the end to stimulate future research and development.</div>

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“…The battery temperature management is another task in charge of a BMS, usually carried out by activating fans for the battery cooling or even heaters, when the battery operates at very low temperatures and needs to be pre-heated before being fully operational. BMSs are sometimes also asked to dynamically manage the battery architecture [54,55], by controlling the parallelization of battery strings when the battery architecture is modular, and the battery capacity in ampere-hour can be selected and adapted to the application requirements by choosing the number of strings to be connected in parallel. Even part of the battery module series, that increase the battery voltage, can be excluded by the BMS with a bypass switch, in order to allow the module substitution or maintenance without interrupting the energy storage service [56].…”

Section: Energy Storage System Technologies For Micro-gridsmentioning

confidence: 99%

Hybrid Micro-Grids Exploiting Renewables Sources, Battery Energy Storages, and Bi-Directional Converters

2019

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This paper analyzes trends in renewable-energy-sources (RES), power converters, and control strategies, as well as battery energy storage and the relevant issues in battery charging and monitoring, with reference to a new and improved energy grid. An alternative micro-grid architecture that overcomes the lack of flexibility of the classic energy grid is then described. By mixing DC and AC sources, the hybrid micro-grid proposes an alternative architecture where the use of bi-directional electric vehicle chargers creates a micro-grid that directly interconnects all the partner nodes with bi-directional energy flows. The micro-grid nodes are the main grid, the RES and the energy storage systems, both, on-board the vehicle and inside the micro-grid structure. This model is further sustained by the new products emerging in the market, since new solar inverters are appearing, where a local energy storage for the RES is available. Therefore, the power flow from/towards the RES becomes bi-directional with improved flexibility and efficiency.

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An Optimization Framework for Dynamically Reconfigurable Battery Systems

Cited by 33 publications

References 12 publications

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Hybrid Micro-Grids Exploiting Renewables Sources, Battery Energy Storages, and Bi-Directional Converters

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