State-of-Charge (SOC)-Balancing Control of a Battery Energy Storage System Based on a Cascade PWM Converter

Maharjan, Laxman; Inoue, Shozo; Akagi, Hirofumi; Asakura, Jun

doi:10.1109/tpel.2009.2014868

Cited by 511 publications

(224 citation statements)

References 33 publications

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“…The key result, however, is that it has been shown that multilevel converters are not only a novel topology that may yield some novel benefits, such as the active cell balancing utility discussed in [2][3][4][5][6], but can also potentially be more efficient that their conventional counterparts. For instance, these results suggest that total loss will be lower with five cascaded H-bridges (i.e.…”

Section: Discussionmentioning

confidence: 99%

“…The first element to be calculated is the Miller charge. This is responsible for the plateau that can be seen in the centre of the graph in (2). The Miller charge can be expressed as the following integral:…”

Section: B Transient Gate Dissipationmentioning

confidence: 99%

“…Thus it has also been demonstrated that multilevel converters can not only perform essential string balancing operations, but also adapt to battery strings as they degrade, reducing the barriers to use of already degraded batteries such as second life electric vehicle batteries. An aspect consistent across papers published in the field, is the lack of justification for the number of levels chosen in their analyses [2,3,6,7]. While this is not a criticism of the research, and certainly does not invalidate their efforts, some sort of analytical method for evaluating multilevel converters of increasing order would be of use in moving this technology from research into industrial application.…”

Section: Introductionmentioning

confidence: 97%

“…Multilevel converters that can also manage balancing of cell strings within the converter topology are an area of active research. Papers can be found referring to it dating from 2009 [2,4], covering the hardware and algorithms utilised and the results attained, with many common, or at least similar, approaches. This has been demonstrated to be able to very effectively balance between strings even with very different capacities and initial state of charge [5,6].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Switching loss optimisation of cascaded H-bridge converters for bidirectional grid-tie battery energy storage systems

Petersen

Stone

Foster

et al. 2017

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

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Abstract-Multilevel converters are an emerging industrial technology and are the subject of a substantial amount of research. However, they are yet to find their way into many mainstream engineering applications. This paper presents a method of quantifying the benefits and disadvantages of multilevel converters of increasing order. The analysis focuses on the cascaded H-bride topology for grid-tie battery inverter applications. The analysis includes both semiconductors losses and semiconductor driver losses. It is shown that multilevel converters can have significant benefits over their conventional counterparts, but that more levels is not necessarily better. This paper's important result is to create a quantitative measure of the pros and cons of multilevel architecture.

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Section: Discussionmentioning

confidence: 99%

Section: B Transient Gate Dissipationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Switching loss optimisation of cascaded H-bridge converters for bidirectional grid-tie battery energy storage systems

Petersen

Stone

Foster

et al. 2017

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

View full text Add to dashboard Cite

show abstract

“…supercapacitor or battery cells are unbalanced because of manufacturing variance, difference of converter loss and fault [5]. The traditional voltage balancing approaches of CMI make small alternations on the switching signals [6]. The power and speed of the energy balancing process depends on the delivered active/reactive power of the inverter.…”

Section: Introductionmentioning

confidence: 99%

Energy Storage System Based on Cascaded Multilevel Inverter with Decoupled Energy Balancing Control

Cao¹,

Jun-fen²,

Zhuang³

et al. 2015

MATEC Web of Conferences

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Abstract. This paper presents a three phase cascaded multilevel inverter based supercapacitor (SC) energy storage system with novel structure and control strategy to maintain the energy balance of between phases. Every two phases are coupled with a series LC filter. With the filter, SC cells in different phases could exchange energy with an auxiliary power flow at high frequency. The auxiliary power flow is orthogonal to the primary power flow. The phase difference between high frequency voltage and current components of each phase determines whether the energy is absorbed into or released from its SC cells. Unlike traditional energy balancing strategies, the proposed method is independent to the fundamental real power drawn by the energy storage system. Simulation results confirmed the effects of proposed theories.

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State of charge and state of power management in a hybrid energy storage system by the self‐tuned dynamic exponent and the fuzzy‐based dynamic PI controller

Bhowmik

Chandak

Rout

2019

Int Trans Electr Energ Syst

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Summary The study converges the system stability for the steady‐state and transient state simultaneously. The battery and compressed air storage systems are considered to address the steady power demand, on the other hand, flywheel and supercapacitor‐based storage unit functions to minimize the transient system fluctuation. The study derives the integrated state variables of the hybrid unit to implement the proposed control strategies. The paper proposes a self − tuned dynamic exponent control strategy to regulate the charge equalization among the battery and compressed air, as they possess a large energy per unit volume. Similarly to regulate the high power content of the flywheel and supercapacitor, a fuzzy tuned dynamic PI is proposed. The proposed strategies ensure an efficient decentralized control among the hybrid units. The designed system under study integrated with the control strategies is tested under the critical operational constraints of load and generation. Further the improvement of the system stability is analyzed using the Nyquist's stability criterion.

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State-of-Charge (SOC)-Balancing Control of a Battery Energy Storage System Based on a Cascade PWM Converter

Cited by 511 publications

References 33 publications

Switching loss optimisation of cascaded H-bridge converters for bidirectional grid-tie battery energy storage systems

Switching loss optimisation of cascaded H-bridge converters for bidirectional grid-tie battery energy storage systems

Energy Storage System Based on Cascaded Multilevel Inverter with Decoupled Energy Balancing Control

State of charge and state of power management in a hybrid energy storage system by the self‐tuned dynamic exponent and the fuzzy‐based dynamic PI controller

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