An Overview of Various DC-DC Converter Techniques used for Fuel Cell based Applications

Ravi, Deepak; Letha, Shimi Sudha; Samuel, Paulson; Reddy, Bandi Mallikarjuna

doi:10.1109/peeic.2018.8665465

Cited by 17 publications

(6 citation statements)

References 42 publications

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“…stacks is fed to these converters, which convert it to a regulated voltage as per application. The desired characteristics of the DC-DC converter in power applications are given below (Rao and Phadke, 2017;Ravi et al, 2019;Sumathi et al, 2015): Table 2 gives a brief overview of various DC-DC Converters topologies employed for F. C. applications. The pros and cons of each topology are concisely outlined.…”

Section: Power Conditioning Unitmentioning

confidence: 99%

Section: Power Conditioning Unitmentioning

confidence: 99%

“…stacks is fed to these converters, which convert it to a regulated voltage as per application. The desired characteristics of the DC-DC converter in power applications are given below (Rao and Phadke, 2017;Ravi et al, 2019;Sumathi et al, 2015): As F.C. output is connected to A.C. load or grid/microgrid (as per application), it is needed to be converted to A.C., requiring the incorporation of an inverter in PCU.…”

Section: Power Conditioning Unitmentioning

confidence: 99%

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PEMFC application through coal gasification along with cost-benefit analysis: A case study for South Africa

Gilani

Amjad

Khan

et al. 2021

Energy Exploration & Exploitation

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The availability of cost-effective and environmentally friendly electricity to the entire population is a prime concern of the South African government. It has brought attention to microgrid projects, especially when rural population is considered properly. To address the energy needs of any country, the focus line should be the cost and availability of local resources. Due to the abundance of coal reserves and lack of alternative resources, coal dependence cannot be overlooked in the near future. This paper focuses not only on microgrid needs in South Africa but also on the possible use of hydrogen extracted from coal as a fuel in Proton Exchange Membrane Fuel Cell (PEMFC) in microgrids. The complete assembly of PEMFC and its use in the microgrid are discussed. To make the H2 extraction process eco-friendly and hence worth considering, Carbon capture and sequestration process is discoursed. Furthermore, cost benefit analysis and the long term benefit of the use of PEMFC in microgrids with coal-based hydrogen production are presented in this research.

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Section: Power Conditioning Unitmentioning

confidence: 99%

Section: Power Conditioning Unitmentioning

confidence: 99%

“…stacks is fed to these converters, which convert it to a regulated voltage as per application. The desired characteristics of the DC-DC converter in power applications are given below (Rao and Phadke, 2017;Ravi et al, 2019;Sumathi et al, 2015): As F.C. output is connected to A.C. load or grid/microgrid (as per application), it is needed to be converted to A.C., requiring the incorporation of an inverter in PCU.…”

Section: Power Conditioning Unitmentioning

confidence: 99%

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PEMFC application through coal gasification along with cost-benefit analysis: A case study for South Africa

Gilani

Amjad

Khan

et al. 2021

Energy Exploration & Exploitation

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show abstract

“…According to [24], fuel cells are now becoming the preferred alternative renewable energy source, as their power production process is not affected by fluctuating environmental factors, contrary to solar cells and wind power plants. However, fuel cells produce low DC output voltage which requires stepping-up and interfacing them to the DC bus.…”

Section: An Overview Of Various Fuel Cell Dc-dc Convertersmentioning

confidence: 99%

Power Converters and EMS for Fuel Cells CCHP Applications: A Structural and Extended Review

Bayendang¹,

Kahn²,

Balyan³

2021

Adv. sci. technol. eng. syst. j.

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Fuel Cells (FCs) and Combined Cooling, Heating and Power (CCHP) systems are becoming very popular due to their environmental friendliness and immense applications. This extended review paper commenced by introducing the rampant South Africa's electricity crisis as the basis for the study, followed by some structural analyses of up to forty-four miscellaneous power electronics converters case studies applicable to fuel cells including at least sixteen FCs energy management systems (EMS) applicable case studies. The review rationale is to determine innovative best practices that can be applied to devise an efficient power converter and EMS for an energy efficient FC CCHP system. From these analyses, it is realized that each power converter and EMS scheme has its merits and demerits depending on the targeted applications and most importantly the research project objectives − that is, whether the goals are to reduce costs, enhance efficiency, reduce size, boost performance, simplicity, durability, reliability, safety etc. Therefore, the conclusion drawn is, there is no "one size fits all" approach, as all the various reviewed case studies reported relatively good results based on their chosen schemes for their targeted applications. Notwithstanding, this review highlights are, i) the interleaved boost converter and variants as well as ii) the maximum power point tracking (MPPT) technique; are the most widely used schemes, as they are reasonably effective and simple to implement. The contributions brought forward are i) an apt single reference study that presents a quick topological insight and synopsis of assorted FCs power converters as well as EMS and ii) our proffered FC CCHP system undergoing research to offer an innovative energy efficient solution for basic household energy needs such as electricity, heating, cooling and lighting.

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“…The use of the dual-half-bridge structure in the conventional buck and boost converters is presented in [17,18]. Detailed reviews of bidirectional converters of recent years are given in [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Family of universal bidirectional DC–DC converters with an extended voltage gain

Axelrod

Berkovich

Beck

2019

IET Power Electronics

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This study presents a family of non-isolated bidirectional DC-DC converters with extended DC gain. Increasing of the DC gain range is achieved due to splitting the base inductor and also by using magnetically coupled inductors. All the variants of the proposed schemes are based on the use of the dual-half-bridge DC-DC converter. As a result, a number of improved schemes of buck, boost and buck-boost bidirectional converters were obtained with the possibility of increasing the voltageboosting ratio in boost converter mode and simultaneously reducing the voltage gain in the buck converter mode. The converters have a symmetrical structure, and this ensures the operation of each of them in four modes, which gives greater flexibility in matching the voltages of the power supply with storage devices. The formulas for the DC gain, maximum voltage stresses on the switches and a comparative evaluation of these parameters are presented. The modes of operation and equivalent schemes are considered in detail. For each of the schemes, the corresponding tables for the operation of the transistors are given. The analyses of the dynamic modes of the proposed converters is shown. The experimental verification completely confirms the theoretical results.

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An Overview of Various DC-DC Converter Techniques used for Fuel Cell based Applications

Cited by 17 publications

References 42 publications

PEMFC application through coal gasification along with cost-benefit analysis: A case study for South Africa

PEMFC application through coal gasification along with cost-benefit analysis: A case study for South Africa

Power Converters and EMS for Fuel Cells CCHP Applications: A Structural and Extended Review

Family of universal bidirectional DC–DC converters with an extended voltage gain

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