The control strategy for a Solid Oxide Fuel Cell Hybrid System

Milewski, Jarosław; Miller, Andrzej; Dmowski, A.; Biczel, P.

doi:10.1109/icca.2009.5410247

Cited by 5 publications

(5 citation statements)

References 16 publications

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“…The SOFC generator of the reference system (HS100) consists of 1152 fuel cell. Each fuel cell has 834 cm 2 effective area . The cells are arranged in bundles of 24 units, which are organized in three series of eight cells.…”

Section: Optimization Resultsmentioning

confidence: 99%

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Improving hybrid SOFC-GT systems performance through turbomachinery design

Bakalis

Stamatis

2014

Int. J. Energy Res.

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SUMMARY A methodology to improve the performance of a hybrid solid oxide fuel cell gas turbine (SOFC‐GT) system for the whole operating range is proposed. The method suggests a way to estimate the geometric parameters of the turbomachinery components for a hybrid SOFC‐GT system. It is based on the search of the compressor and turbine operating lines giving the optimum system efficiency both in design and part load operation. Turbomachinery models are used to calculate the geometry that produces the desired performance maps and the corresponding operating lines. Based on the new turbomachinery design, the hybrid system shows a clear efficiency advantage for the whole operating range. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Optimization Resultsmentioning

confidence: 99%

“…Milewski et al . proposed a control system to optimize the part load performance of a large hybrid SOFC‐GT system. Wu and Zu proposed an iterative algorithm to optimize the operating parameters as the load changes.…”

Section: Introductionmentioning

confidence: 99%

Improving hybrid SOFC-GT systems performance through turbomachinery design

Bakalis

Stamatis

2014

Int. J. Energy Res.

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“…Several publications were carried out on various hybrid cycles in full-load, part-load, and transient conditions. Attention was also focused on control system development issues [2][3][4][5] and on thermo-economic features [6].…”

Section: Introductionmentioning

confidence: 99%

Emulator Rig for SOFC Hybrid Systems: Temperature and Power Control with a Real‐Time Software

Caratozzolo¹,

Ferrari²,

Traverso³

et al. 2013

Fuel Cells

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This work is based on the hybrid system emulator plant developed by the Thermochemical Power Group (TPG) of the University of Genoa. This rig is composed of a 100 kW microturbine coupled with high temperature fuel cell emulation devices. A real-time model is used for components not physically present in the laboratory (Solid Oxide Fuel Cell (SOFC), reformer, anodic circuit, off-gas burner, cathode blower). It is necessary to evaluate thermodynamic and electrochemical performance related to SOFC systems. Using an User Datagram Protocol (UDP) based connection with the control/acquisition software, it generates a hardware-in-the-loop (HIL) facility for hybrid system emulation. Temperature, pressure, and mass flow rate at the recuperator outlet and machine rotational speed are measured in the plant and used as inputs for the model. The turbine outlet temperature (TOT) calculated by the model is fed into the machine control system and the turbine electric load is changed to match the model TOT values (effective plant/model coupling to avoid modifications on microturbine controller).\ud Different tests were carried out to analyse hybrid system technology through the interaction between an experimental plant and a real-time model. Double step and double ramp tests of current and fuel provided the system dynamic response

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“…Many authors have discussed various hybrid cycles in fullload, part-load and transient conditions. Attention has also been focused on control system development issues [2][3][4] [5] and on thermo-economic features [6].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Simultaneous Temperature and Power Control in a Simulation Facility for a SOFC Hybrid System

Caratozzolo

Ferrari

Traverso

et al. 2012

Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration

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This study is based on a complete hybrid system emulator test rig developed at the University of Genoa (Savona laboratory) by the Thermochemical Power Group (TPG). The plant is mainly composed of a 100 kW recuperated micro gas turbine coupled with both anodic and cathodic vessels for high temperature fuel cell emulation. The test rig was recently equipped with a real-time model for emulating components not physically present in the laboratory (SOFC block, reformer, anodic circuit, off-gas burner, cathodic blower). This model is used to fully evaluate thermodynamic and electrochemical performance related to solid oxide fuel cell systems. Using a UDP based connection with the test rig control and acquisition software, it generates a real-time hardware-in-the-loop (HIL) facility for hybrid system emulation. Temperature, pressure and air mass flow rate at the recuperator outlet (downstream of the compressor) and rotational speed of the machine are inputs from the plant to the model. The turbine outlet temperature (TOT) calculated by the model is fed into the machine control system and the turbine electric load is moved to match the model TOT values.\ud In this study various tests were carried out to characterize the interaction between the experimental plant and the real-time model; double step and double ramp tests of current and fuel provided the dynamic response of the system.\ud The control system proved to be fast, compared to the slow thermal response of the SOFC stack, and also reliable. The hybrid systems operated at 90% of nominal power with electrical efficiency of about 56% based on natural gas LHV

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The control strategy for a Solid Oxide Fuel Cell Hybrid System

Cited by 5 publications

References 16 publications

Improving hybrid SOFC-GT systems performance through turbomachinery design

Improving hybrid SOFC-GT systems performance through turbomachinery design

Emulator Rig for SOFC Hybrid Systems: Temperature and Power Control with a Real‐Time Software

Demonstration of Simultaneous Temperature and Power Control in a Simulation Facility for a SOFC Hybrid System

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