Modular multilevel parallel converter based split battery system (M2B) for stationary storage applications

Singer, Arthur; Helling, Florian; Weyh, Thomas; Jungbauer, Johanna; Pfisterer, Hans-Jürgen

doi:10.23919/epe17ecceeurope.2017.8099064

Cited by 10 publications

(9 citation statements)

References 13 publications

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“…Doing so, the third terminal must be connected to the preceding and subsequent ESU [374,416,429,431,471]. Especially in MLIs, where the output voltage is periodically changed, advantages can be achieved with parallel reconfiguration [472]. Compared to the CHB topology, however, e.g., the Marx topology presented in [458,459] does not have the capability of direct voltage inversion.…”

Section: Microtopologymentioning

confidence: 99%

“…The MMC is mostly used with half bridge submodules, but there are also variants that for example use full bridge and Clamped-Double microtopologies [467,476]. Nonetheless, in MLI applications, the MMC provides only a quarter of the entire DC-link voltage on the AC-connections, which is a considerable disadvantage for drive applications [431,433,434,445,472]. Terbrack et al [457] introduce a new approach to achieve a DC-link with as few components as possible by integrating additional voltage taps into an MLI battery system.…”

Section: Macrotopologymentioning

confidence: 99%

“…Besides this feature, other advantages such as lower EMI and consequently smaller filter effort, the application of power semiconductors with smaller breakdown voltage, lower proportion of harmonics in the output signals, and smaller Total Harmonic Distortion (THD) can come along with this technology. The typical field of application is the medium-and high power and voltage range [426,[429][430][431]433,434,444,445,448,468,472,478].…”

Section: Multilevel Invertermentioning

confidence: 99%

See 2 more Smart Citations

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

et al. 2021

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This review provides an overview of new strategies to address the current challenges of automotive battery systems: Intelligent Battery Systems. They have the potential to make battery systems more performant and future-proof for coming generations of electric vehicles. The essential features of Intelligent Battery Systems are the accurate and robust determination of cell individual states and the ability to control the current of each cell by reconfiguration. They enable high-level functions like fault diagnostics, multi-objective balancing strategies, multilevel inverters, and hybrid energy storage systems. State of the art and recent advances in these topics are compiled and critically discussed in this article. A comprising, critical discussion of the implementation aspects of Intelligent Battery Systems complements the review. We touch on sensing, battery topologies and management, switching elements, communication architecture, and impact on the single-cell. This review contributes to transferring the best technologies from research to product development.

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Section: Microtopologymentioning

confidence: 99%

Section: Macrotopologymentioning

confidence: 99%

Section: Multilevel Invertermentioning

confidence: 99%

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Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

et al. 2021

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“…An RBS is normally operated with an additional, dedicated propulsion inverter. Using one strand per phase, the BM3 topology could even be applied as a propulsion converter, similar to the cascaded H-bridge (CHB) [41], [42] or the M2B/MMSP [6], [43] converter, shown in Fig. 2.…”

Section: Reconfigurable Battery and Multilevel Converter Systemmentioning

confidence: 99%

Online and On-Board Battery Impedance Estimation of Battery Cells, Modules or Packs in a Reconfigurable Battery System or Multilevel Inverter

Kersten

Kuder

Han

et al. 2020

IECON 2020 the 46th Annual Conference of the IEEE Industrial Electronics Society

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This paper shows two approaches to determine the battery impedance of battery cells or battery modules when used in a reconfigurable battery system (RBS) or in any type of modular multilevel converter (MMC) for electric drive applications. A generic battery model is used and the concepts of the recursive time and frequency-domain parameter extraction, using a current step and an electrochemical impedance spectroscopy, are explained. Thus, it is shown and demonstrated that the balancing current of neighboring cells/modules ,when in parallel operation, can be used, similar to the time-domain parameter extraction utilizing a current step, to determine the battery parameters. Furthermore, it is shown and demonstrated that a part of the inverter can be used as variable AC voltage source to control a sinusoidal current through the motor inductances of the drive train, which can be injected to the inserted battery cells/modules of an adjacent phase to perform an on-board impedance spectroscopy. Using either of the two presented approaches, the individual battery impedances can be easily determined, yielding the state of health (SOH) and the power capability of individual battery cells/modules. Nonetheless, the analyzed approaches were just considered to be applied at machine standstill, which is not suitable for grid-tied applications.

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“…A large amount of serially connected battery cells increases the need, complexity, and costs of battery balancing to maximize the usable battery capacity in the presence of varying states-of-charge. [3] This paper presents a novel BESS topology: The Modular Multilevel Parallel Converter based Split Battery System (M2B) presented before [4,5]. The general advantages are described, and the increase in usable battery capacity is highlighted.…”

Section: Introductionmentioning

confidence: 99%

A Novel, Scalable, Low-Cost and High-Efficiency Battery Storage System Topology

Singer¹,

Truong²,

Sprehe³

et al. 2019

Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)

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Battery Storage Systems are increasingly deployed in the grid for commercial applications and ancillary grid services. Current state-of-the-art systems suffer from several drawbacks regarding safety, efficiency, and costs. This paper presents a novel approach that avoids major challenges for the production, installation, and operation of battery storage systems. Based on modular power electronics the central inverter is omitted and each battery module acts according to grid voltage and power requirements. This leads to the flexibly adjustable m-Bee system with the highest efficiency and failsafety. This new topology also increases the usable battery capacity compared to state-of-the-art systems.

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Modular multilevel parallel converter based split battery system (M2B) for stationary storage applications

Cited by 10 publications

References 13 publications

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

Online and On-Board Battery Impedance Estimation of Battery Cells, Modules or Packs in a Reconfigurable Battery System or Multilevel Inverter

A Novel, Scalable, Low-Cost and High-Efficiency Battery Storage System Topology

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