Discussions on a battery energy storage system based on a cascade PWM converter with star configuration

Maharjan, Laxman; Yamagishi, Tsukasa; Akagi, Hirofumi

doi:10.1109/ipec.2010.5543507

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…Maharjan and Akagi proposed the utilization of the YCHB converter for BESS [27], [140]- [142]. As these references state, the star configuration is preferable to the delta in this applications, so as to minimize the number of power cells connected in cascade.…”

Section: Unequal Active Power Distribution In Bessmentioning

confidence: 99%

“…The authors add a fundamental-frequency v 0 expressed in (8), in such a way as to absorb/deliver three-phase balanced current in spite of operating all the power cells at different power levels. Two philosophies are distinguished: 1) phase cluster voltage balancing control [140]- [142], which has the function of balancing the three mean dc voltages of the three phase clusters; and 2) phase cluster state-of-charge (SOC) balancing [27], which has the function of balancing the three mean SOC values of the three phase clusters. The latter provides more effective utilization of battery energy.…”

Section: Unequal Active Power Distribution In Bessmentioning

confidence: 99%

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Power Balancing in Cascaded H-Bridge and Modular Multilevel Converters Under Unbalanced Operation: A Review

et al. 2021

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Multilevel Voltage-Source Converters (VSC) based on modular structures are envisioned as a prominent alternative for grid and industry applications. Foremost among these are the Cascaded H-Bridge (CHB) and the Modular Multilevel Converter (MMC). In this context, depending on the application and the power conversion structure, unbalanced operating conditions can be asked to the converter. Previous investigations regarding the operation and the solutions for modular structures under unbalanced conditions have already addressed this topic, but information is dispersed over a wide number of sources. This paper identifies, classifies, and analyzes the intercluster active power balancing strategies for the adequate operation of the most commonly used modular structures in some typical unbalanced operating scenarios: the Static Synchronous Compensator (STATCOM) under unbalanced voltage and/or current conditions, the unequal power generation in large-scale photovoltaic (PV) power plants, and the uneven power distribution in a battery energy storage system (BESS). Each of the applications has been independently studied so as to provide a comprehensive analysis of the alternative techniques found in the specialized literature, clearly explaining their respective strengths and drawbacks. Several future challenges have been identified during the study, which will involve greater research effort in this key research topic.

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Section: Unequal Active Power Distribution In Bessmentioning

confidence: 99%

Section: Unequal Active Power Distribution In Bessmentioning

confidence: 99%

Power Balancing in Cascaded H-Bridge and Modular Multilevel Converters Under Unbalanced Operation: A Review

et al. 2021

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show abstract

“…Phase and SM SOC balancing control diagrams zero-sequence voltage (v 0 ) injection to the voltage reference of each phase [38,64,121,[174][175][176][177][178][179][180][181][182]. The injected v 0 influences the power delivered by or extracted from each phase, hence changes phase voltages but does not affect line to line voltages.…”

Section: Soc Balancing In Csm-mlcssmentioning

confidence: 99%

“…For three‐phase CHB‐MLCSs, phase SOC balancing aims to make the average SOC of each phase equal to the average SOC of all phases. It is achieved by zero‐sequence voltage (

v_{0}

) injection to the voltage reference of each phase [38, 64, 121, 174–182]. The injected

v_{0}

influences the power delivered by or extracted from each phase, hence changes phase voltages but does not affect line to line voltages.…”

Section: Control Strategies For Multilevel Converter Based Battery St...mentioning

confidence: 99%

Bidirectional DC–DC converter based multilevel battery storage systems for electric vehicle and large‐scale grid applications: A critical review considering different topologies, state‐of‐charge balancing and future trends

Eroğlu

Kurtoğlu

Vural

2021

IET Renewable Power Gen

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The expanding share of renewable energy sources (RESs) in power generation and rise of electric vehicles (EVs) in transportation industry have increased the significance of energy storage systems (ESSs). Battery is considered as the most suitable energy storage technology for such systems due to its reliability, compact size and fast response. Power converters are vital for the integration of batteries into power grid and EVs as they play an active role in both power conversion and battery management. Multilevel converters (MLCs) are types of power converters and attract widespread interest due to their improved power quality, reliability and modularity. There are two main challenges in MLC based battery storage systems (BSSs) which are selecting a proper MLC topology and balancing state‐of‐charges (SOCs) of batteries. Although some research has been carried out on either MLCs or SOC balancing, no single study exists which presents a comprehensive review on MLC based BSSs for large‐scale grid and EV applications. This paper begins by reviewing several major battery storage technologies that are utilised in MLC based BSSs. Later on, a systematical review of commonly used and recently proposed MLC topologies for BSSs are provided along with different control schemes for MLCs by specifically focusing on SOC balancing techniques. Finally, potential challenges and suggestions for future improvement of MLC based BSSs are addressed.

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“…During the occurrence of a single-converter-cell or single-battery unit fault, the fault-tolerant control enables continuous operation and maintains state-of-charge balancing of the remaining healthy battery units. This enhances both system reliability and availability [11]. It provides a good solution for the design of cascade topology circuit, but it lacks detailed analysis how the major factors affect the stability of the system.…”

Section: Introductionmentioning

confidence: 99%

Small-signal Modeling and Analysis of Cascade Half-bridge Battery Energy Storage System with Distributed Control

Wang¹,

Tong²,

Cui³

et al. 2019

dteees

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This paper focus on the echelon use of batteries. One of the flexible battery group technologies is the cascade half-bridge battery energy storage system with distributed control. It has the advantages of simpler structure, higher reliability, lower cost and it is easier to achieve fault-tolerant. In the paper, the classical droop control method in Microgrid is introduced to the current control of series system. The small-signal model is built at first. By using impedance analysis and characteristic root analysis, the anti-disturbance capability of the system is analyzed，with the current source control and bus voltage source disturbing in different module numbers or inductances. At last, cascade half bridge experimental equipment is designed, constructed and tested to verify the analysis and stable operation.

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Discussions on a battery energy storage system based on a cascade PWM converter with star configuration

Cited by 8 publications

References 15 publications

Power Balancing in Cascaded H-Bridge and Modular Multilevel Converters Under Unbalanced Operation: A Review

Power Balancing in Cascaded H-Bridge and Modular Multilevel Converters Under Unbalanced Operation: A Review

Bidirectional DC–DC converter based multilevel battery storage systems for electric vehicle and large‐scale grid applications: A critical review considering different topologies, state‐of‐charge balancing and future trends

Small-signal Modeling and Analysis of Cascade Half-bridge Battery Energy Storage System with Distributed Control

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