Design and part-load performance of a hybrid system based on a solid oxide fuel cell reactor and a micro gas turbine

Costamagna, Paola; Magistri, Loredana; Massardo, Aristide F.

doi:10.1016/s0378-7753(00)00668-6

Cited by 381 publications

(173 citation statements)

References 19 publications

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“…This type of hybrid system has been proven to have electrical efficiency of up to 53% at 200 kW output [3], and is considered to have potential electrical efficiencies that are higher than 60% [4][5][6]. To further study and understand the SOFC-MGT hybrid system, both static [7][8][9] and dynamic [10][11][12][13] performance analyses have been conducted recently.…”

Section: Introductionmentioning

confidence: 99%

Power and temperature control of fluctuating biomass gas fueled solid oxide fuel cell and micro gas turbine hybrid system

Kaneko

Brouwer

Samuelsen

2006

Journal of Power Sources

101

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Power and temperature control of fluctuating biomass gas fueled solid oxide fuel cell and micro gas turbine hybrid system AbstractThis paper addresses how the power and temperature are controlled in a biomass gas fueled solid oxide fuel cell (SOFC) and micro gas turbine (MGT) hybrid system. A SOFC and MGT dynamic model are developed and used to simulate the hybrid system performance operating on biomass gas. The transient behavior of both the SOFC and MGT are discussed in detail.An unstable power output is observed when the system is fed biomass gas. This instability is due to the fluctuation of gas composition in the fuel. A specially designed fuel controller succeeded not only in allowing the hybrid system to follow a step change of power demand from 32 to 35 kW, but also stably maintained the system power output at 35 kW. In addition to power control, fuel cell temperature is controlled by introduction and use of a bypass valve around the recuperator. By releasing excess heat to the exhaust, the bypass valve provided the control means to avoid the self-exciting behavior of system temperature and stabilized the temperature of SOFC at 850• C.

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Section: Introductionmentioning

confidence: 99%

Power and temperature control of fluctuating biomass gas fueled solid oxide fuel cell and micro gas turbine hybrid system

Kaneko

Brouwer

Samuelsen

2006

Journal of Power Sources

101

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“…If the isolation or a high ratio of the voltage conversion is required, a transformer is usually integrated into the system. The main drawback for this configuration is that the low-frequency transformer placed at the output of the inverter makes the system very bulky and expensive (Palsson et al, 2000;Costamagna et al, 2001;Bayoumi et al, 2001Bayoumi et al, , 2002Selimovic and Palsson, 2002;Alcaide et al, 2006;Pillai et al, 2008;Maamoun et al, 2002). 2 It produces sufficient voltage for the inverter input so that the required magnitude of the AC voltage can be produced .…”

Section: Fuel Cell System Configurationsmentioning

confidence: 99%

Power electronics in smart grid distribution power systems: a review

Bayoumi

2016

IJIED

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Distributed generation (DG) in smart grid (SG) is being employed as a means of achieving increased reliability for electrical power systems as regarded by consumers. As the most of DG technologies utilise renewable sources, the power electronic interface plays a vital role to match the characteristics of a DG unit with the grid requirements. This paper presents the power electronics capabilities required for DG systems in SG to convert the generated power into useful power that can be directly interconnected with the utility grid and/or that can be used for consumer applications. Because of the enhancement and the different power ranges of power electronics devices, the development of advanced power electronic interface that is scalable to meet different power requirements, with modular design, lower cost, and improved reliability, will improve the overall performance and durability of smart grid distributed power systems.

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“…Similar results were found at the University of Genova, Italy, where a SOFC/GT system with a pressurized SOFC was analyzed for design and part load performance. Two cases were presented: (1) fixed speed GT, and (2) variable speed GT [4]. The variable speed GT provided a more efficient and flexible system with respect to part load operation.…”

Section: Bopmentioning

confidence: 99%

Control design of an atmospheric solid oxide fuel cell/gas turbine hybrid system: Variable versus fixed speed gas turbine operation

Roberts

Brouwer

Jabbari

et al. 2006

Journal of Power Sources

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This study is focused on a hybrid fuel cell/gas turbine (FC/GT) system with an atmospheric pressure solid oxide fuel cell (SOFC). The impact of the gas turbine rotational speed on dynamic performance and controllability of a hybrid system is investigated. The transient response of the FC/GT system to perturbations in the power demand has been investigated. Two operational strategies of gas turbines are compared: (1) fixed speed operation, and (2) variable speed operation. For both operation strategies, a wide range of power production is numerically simulated. The results show that variable speed operation is superior for the FC/GT hybrid configuration studied. Variable speed operation allows a 50% turn down in power with no additional balance of plant equipment required. The system efficiency is maintained above 66% for variable speed operation compared to 53% for fixed speed operation with auxiliary combustion.

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Design and part-load performance of a hybrid system based on a solid oxide fuel cell reactor and a micro gas turbine

Cited by 381 publications

References 19 publications

Power and temperature control of fluctuating biomass gas fueled solid oxide fuel cell and micro gas turbine hybrid system

Power and temperature control of fluctuating biomass gas fueled solid oxide fuel cell and micro gas turbine hybrid system

Power electronics in smart grid distribution power systems: a review

Control design of an atmospheric solid oxide fuel cell/gas turbine hybrid system: Variable versus fixed speed gas turbine operation

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