Electrochemical Energy Storage

Křivík, Petr; Bača, Petr

doi:10.5772/52222

Cited by 12 publications

(8 citation statements)

References 3 publications

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“…In addition, since the charger/discharger must be controlled in both positive and negative power flows by the same controller and because the bandwidth of the system must be set as high as possible, i.e., no linearization processes involved, the proposed controller is based on sliding-mode theory. The proposed SMC is based on the sliding function Ψ and surface Φ presented in (3) and 4, respectively. This new surface includes the bus current i dc , a new parameter k b weighting the battery current i b , the error between the bus voltage v dc and the reference value v R weighted by the parameter k p , and the integral of the error between v dc and v R weighted by the parameter k i .…”

Section: Proposed Sliding-mode Controllermentioning

confidence: 99%

“…Therefore, finding cost-effective methods to store energy is of importance. There are currently many technologies for storing energy, including electro-chemical, mechanical, thermal, hydraulic and pneumatic technologies [2][3][4][5][6][7]. Among the electro-chemical technologies, the most well-known solutions are ultracapacitors, lithium ion batteries (Li-ion), lead-acid batteries and flow batteries [2,[8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Control of a Charger/Discharger DC/DC Converter with Improved Disturbance Rejection for Bus Regulation

2018

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Stand-alone power systems based on renewable energy sources are widely used for energy generation in remote locations and for distributed generation in urban environments. The DC bus is an essential component of these systems since it enables power transmission between the sources, loads and batteries. The batteries are interfaced with the bus using a charger/discharger DC/DC converter, which is controlled to regulate the DC bus voltage under any operating conditions. This is an important task because unsafe over-voltages and under-voltages in the bus could damage the sources, loads and power converters. This paper proposes a sliding-mode controller for a charger/discharger DC/DC converter with improved disturbance rejection to provide a tight bus voltage regulation for safe operation. The main novelty of this solution is the inclusion of the bus current in the sliding surface, which accelerates the controller response. Moreover, a formal proof of the system global stability is provided, and a detailed process is developed to calculate the controller and implementation parameters. Finally, the proposed solution is validated through simulations and experiments.

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Section: Proposed Sliding-mode Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control of a Charger/Discharger DC/DC Converter with Improved Disturbance Rejection for Bus Regulation

2018

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“…To better understand the influence of PbSO 4 on the negative electrodes of LAB during cycling, the surface morphology of the negative electrode after formation and after the termination cycle tests was investigated. Figure 6(a) shows the porous spongy structure of the negative electrode after formation, while Figure 6(b) displays that the negative electrode after the termination of the cycle tests consisted of some relatively smooth and big PbSO 4 particles [79]. It suggests that the PbSO 4 on the negative electrode is closely linked to battery failure.…”

Section: Irreversible Sulfation Of Negative Electrodementioning

confidence: 99%

“…Figure 6(a) shows the porous spongy structure of the negative electrode after formation, while Figure 6(b) displays that the negative electrode after the termination of the cycle tests consisted of some relatively smooth and big PbSO 4 particles [79]. Figure 6(a) shows the porous spongy structure of the negative electrode after formation, while Figure 6(b) displays that the negative electrode after the termination of the cycle tests consisted of some relatively smooth and big PbSO 4 particles [79].…”

Section: Irreversible Sulfation Of Negative Electrodementioning

confidence: 99%

Review on the research of failure modes and mechanism for lead-acid batteries

Yang

Wang

et al. 2016

Int. J. Energy Res.

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Summary The lead–acid battery (LAB) has been one of the main secondary electrochemical power sources with wide application in various fields (transport vehicles, telecommunications, information technologies, etc.). It has won a dominating position in energy storage and load‐leveling applications. However, the failure of LAB becomes the key barrier for its further development and application. Therefore, understanding the failure modes and mechanism of LAB is of great significance. The failure modes of LAB mainly include two aspects: failure of the positive electrode and negative electrode. The degradations of active material and grid corrosion are the two major failure modes for positive electrode, while the irreversible sulfation is the most common failure mode for the negative electrode. Introduction of carbon materials to the negative electrodes of LAB could suppress sulfation problem and enhance the battery performance efficiently. This paper will attempt here to pull together observations made by previous research to obtain a more comprehensive and integrative view of LAB failure modes. Moreover, according to a detail investigation to the battery market, we have drawn an objective and optimistic conclusion of LAB prospect. Copyright © 2016 John Wiley & Sons, Ltd.

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“…By processes of this kind, it is possible to convert chemical energy, trapped in chemical bonds of different molecules acting like fuels, into electrical energy as in fuel cells (FC) [1], or to harvest solar energy of photons thanks to the presence of proper molecules decorating the surface of a Electrospinning Method Used to Create Functional Nanocomposites Films semiconducting oxide as in dye-sensitized solar cells (DSSC) [2]. EEC also permits to store energy for its further use as in supercapacitors, by the creation of a double-layered charges, [3,4] and in Li-ion batteries, by the so-called intercalation process [5]. Moreover, EEC can be associated to redox reactions, induced to obtain new molecules, able to efficiently store the starting energy into their chemical bonds.…”

Section: Electrochemical Energy Conversionmentioning

confidence: 99%

Development of New Nanostructured Electrodes for Electrochemical Conversion: Energy and Fuels from the Environment

Massaglia¹,

Quaglio²

2018

Electrospinning Method Used to Create Functional Nanocomposites Films

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During the last decade, carbon-based nanofibers emerged as an important class of materials for the fabrication of electrodes for electrochemical energy conversion. Indeed carbon-based nanofibers combine high electrochemical stability and high porosity to high mechanical flexibility and low weight, resulting in a unique and versatile material for the design and fabrication of energy-related devices. This chapter aims to show and analyze new nanostructured materials, obtained by electrospinning technique, in order to design 3D arrangement of the electrodes and to improve the energy efficiency of energy production devices. Indeed, the design of new 3D nanostructured electrodes enhances the energy efficiency of these devices, optimizing the energy production, obtained by new renewable energy technologies. The chapter is focused on those devices able to generate power output through the electrochemical conversion of different fuels, like wastes, and environmental compounds, such as CO 2 .

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Electrochemical Energy Storage

Cited by 12 publications

References 3 publications

Control of a Charger/Discharger DC/DC Converter with Improved Disturbance Rejection for Bus Regulation

Control of a Charger/Discharger DC/DC Converter with Improved Disturbance Rejection for Bus Regulation

Review on the research of failure modes and mechanism for lead-acid batteries

Development of New Nanostructured Electrodes for Electrochemical Conversion: Energy and Fuels from the Environment

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