High Voltage Ratio DC–DC Converter for Fuel-Cell Applications

Shahin, Ahmed; Hinaje, Melika; Martin, Jean-Philippe; Pierfederici, Serge; Raël, Stéphane; Davat, Bernard

doi:10.1109/tie.2010.2045996

Cited by 137 publications

(70 citation statements)

References 32 publications

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“…9, the converter operates in CCM and includes two operating states. When the duty ratio is equal to 0.2, the capacitor voltages V C1 (or V C3 ) is about 3.3 V and V C2 is about 16.67 V, and the output voltage V o is about 30 V. When the duty ratio is 0.3, the capacitor voltageV C1 (or V C3 ) is 7.5 V, V C2 is 25 V, and the output voltages is 42.5 V. When the duty ratio is 0.4, the capacitor voltage V C1 (or V C3 ) is 20 V, V C2 are 50 V, and the output voltage is 80 V. Theseare all in accordance with the theoretical values calculated from (1), (2), and (3).…”

Section: Simulation Resultssupporting

confidence: 87%

“…Therefore, it is necessary to develop new energy resources such as solar energy, and wind energy, which are renewable and environmental protection, to replace the traditional fossil energy [1,2]. However, the output voltage of renewable energy sources tends to be low, and far from the desired dc-link voltage level of grid-connected inverters.…”

Section: Introductionmentioning

confidence: 99%

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High step-up quasi-Z-source DC–DC converters with single switched capacitor branch

Zhu

Zhang

2017

J. Mod. Power Syst. Clean Energy

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Aiming to integrate the respective merits of the switched-capacitor converter and the quasi-Z-source converter. An novel high step-up quasi-Z-source DC-DC converter with a single switched-capacitor branch is proposed. Compared to other high boost DC-DC converters, the proposed converter can provide higher output voltage gain, lower current stress across the switches, and lower voltage stress across the output diodes by using the same or similar passive and active components. Therefore, the efficiency and reliability of the converter can be improved. The topological derivation, operating principle, parameter selection, and comparison with other DC-DC converters are presented. Finally, both simulations and experimental results are given to verify the characteristics of the proposed converter.

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Section: Simulation Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

High step-up quasi-Z-source DC–DC converters with single switched capacitor branch

Zhu

Zhang

2017

J. Mod. Power Syst. Clean Energy

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show abstract

“…Different demands are considered depending on application of DC-DC converters, like high efficiency [1][2][3], high voltage gain [4], low voltage and/or current stress on switches [5,6], smaller size of magnetics [7], etc. A resonant converter is one kind of converter satisfying these needs [6,[8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of an interleaved current-fed high step-up quasi-resonant DC-DC converter for fuel cell applications

Salehi¹,

Vahidi

Milimonfared³

et al. 2015

Turk J Elec Eng & Comp Sci

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This paper proposes a current-fed quasi-resonant converter with soft switching method. Input current ripple is reduced by employing two boost circuits at the input, which makes this converter appropriate for fuel cell application.Current stress on switches is reduced because of the resonance in switches, and also, as a result of zero voltage switching in switches, switching losses will be reduced in this proposed converter. In the output, the reverse recovery problem of diodes is alleviated by zero current switching, so there is no need for fast diodes anymore. The reduction of losses improves the efficiency, and in a wide range of load, efficiency is high. Experimental results on a 1-kW prototype are provided to validate the proposed concept.

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“…Therefore, batteries, ultracapacitors or other auxiliary power sources are needed to support the operation of the FC, in order to ensure a fast response to any load power transient. The systems formed by a FC and an other auxiliary power source, known as FC hybrid systems, have been extensively researched over recent years [49][50][51][52]. These hybrid systems can limit the slope of the current or power generated by the FC, with the use of current-controlled dc-dc converters.…”

Section: Reactant Gas Starvationmentioning

confidence: 99%

A Review of the Main Power Electronics' Advances in Order to Ensure Efficient Operation and Durability of PEMFCs

et al. 2012

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Original scientific paperThis article focuses on the main issues that affect the lifetime and performance of proton-exchange membrane fuel cells. The short lifespans of these fuel cells represent a barrier to their massive commercialization and usage in mobile and stationary applications. As fuel cell is a very complex system, a lot of knowledge of different areas is required, such as chemistry, electricity and mechanics, in order to completely understand its operation and all the problems that can occur during it. It is for this reason that an interdisciplinary approach needs to be taken when designing fuel-cell energy systems. This paper focuses on identifying and solving those issues that negatively affect the lifetime and performance of fuel cells. It is hoped that this article would be a valuable aid for power electronics' researchers and engineers for better understanding the presented issues and a useful guide for solving them with the use of proper power electronic-devices. Initially, the basic operation and structure of a proton-exchange membrane fuel cell is explained. Three main issues that can occur during operation of a mobile or stationary fuel cell energy system are pointed out and discussed in details, on the basis of the state-of-the-art on fuel cell technology. These issues are poor water management, reactant gas starvation and fuel cell current ripple. This article provides answers as to why they occur, how they affect the fuel cell, how they can be mitigated, and what are the future trends within this research field.Key words: PEMFC, Water management, Reactant gas starvation, Current ripple, Power electronics.Pregled znanstvenih napredaka u učinskoj elektronici usmjerenih ka osiguravanju efikasnog rada i dužeg životnog vijeka PEM gorivihćelija.Članak se osvrće na ključna pitanja koja utječu na vrijeme rada i performanse gorivihćelija s polimernom membranom kao elektrolitom. Kratak životni vijek gorivihćelija takve vrste prepreka je njihovoj komercijalizaciji i masovnoj upotrebi u mobilnim i stacionarnim stanicama. Budući da su gorivećelije komplicirani sustavi potrebno je znanje iz raznih područja kemije, elektrotehnike i mehanike da bi se u potpunosti mogao razumjeti njihov način rada i problemi koji se dogadaju. Upravo je zbog toga multidisciplinarni pristup nužnost pri razvoju sustava koji koriste gorivećelije. Ovaj ječlanak usmjeren prema identifikaciji i rješavanju onih problema koji negativno utječu na životni vijek i performanse gorivihćelija. Autori se nadaju daće sečlanak pokazati kao korisna pomoć i vodič istraživačima i inženjerima u domeni učinske elektronike pri susretu s navedenim problemima. Objašnjen je način rada i struktura gorivećelije s polimernom membranom kao elektrolitom. Izložena su, i diskutirana do u detalje, tri glavna problema sa stajališta trenutačnih spoznaja u području učinske elektronike. Ti problemi su: loše upravljanje vodom, nestanak reaktantnog plina i strujni trzaji u gorivimćelijama. Objašnjeno je zašto se ovi problemi dogadaju, kako utječu na gorivućelij...

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High Voltage Ratio DC–DC Converter for Fuel-Cell Applications

Cited by 137 publications

References 32 publications

High step-up quasi-Z-source DC–DC converters with single switched capacitor branch

High step-up quasi-Z-source DC–DC converters with single switched capacitor branch

Analysis and design of an interleaved current-fed high step-up quasi-resonant DC-DC converter for fuel cell applications

A Review of the Main Power Electronics' Advances in Order to Ensure Efficient Operation and Durability of PEMFCs

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