A new control system for grid-feeding power converters of solid oxide fuel cells

Control structures of power converters in an AC microgrid are classified into grid supporting, grid feeding, and grid forming. In this paper, a new control system has been designed for a grid-feeding power converter belonging to a solid oxide fuel cell stack. Also, the model of the solid oxide fuel cell stack for power systems introduced in recent studies has been improved in this research study considering the double-layer charging effect. The simulation results confirm capability of the proposed control system and show dynamic behaviour of the solid oxide fuel cell stack.

[1]  M. H. Nehrir,et al.  A Physically Based Dynamic Model for Solid Oxide Fuel Cells , 2007 .

[2]  Caisheng Wang,et al.  Short-time Overloading Capability and Distributed Generation Applications of Solid Oxide Fuel Cells , 2007, 2007 IEEE Power Engineering Society General Meeting.

[3]  Josep M. Guerrero,et al.  Mode Adaptive Droop Control With Virtual Output Impedances for an Inverter-Based Flexible AC Microgrid , 2011, IEEE Transactions on Power Electronics.

[4]  Juan C. Vasquez,et al.  Distributed Secondary Control for Islanded Microgrids—A Novel Approach , 2014, IEEE Transactions on Power Electronics.

[5]  J. Driesen,et al.  Control of Microgrids , 2007, 2007 IEEE Power Engineering Society General Meeting.

[6]  Yun Wei Li,et al.  An Accurate Power Control Strategy for Power-Electronics-Interfaced Distributed Generation Units Operating in a Low-Voltage Multibus Microgrid , 2009, IEEE Transactions on Power Electronics.

[7]  M.H. Nehrir,et al.  Dynamic models and model validation for PEM fuel cells using electrical circuits , 2005, IEEE Transactions on Energy Conversion.

[8]  Hassan Bevrani,et al.  An Intelligent Droop Control for Simultaneous Voltage and Frequency Regulation in Islanded Microgrids , 2013, IEEE Transactions on Smart Grid.

[9]  Reza Iravani,et al.  Potential-Function Based Control of a Microgrid in Islanded and Grid-Connected Modes , 2010, IEEE Transactions on Power Systems.

[10]  J. A. Pecas Lopes,et al.  MICROGRIDS BLACK START AND ISLANDED OPERATION , 2005 .

[11]  S. Chowdhury,et al.  Microgrids and Active Distribution Networks , 2009 .

[12]  Caisheng Wang,et al.  Load Transient Mitigation For Stand-alone Fuel Cell Power Generation Systems , 2007, 2007 IEEE Power Engineering Society General Meeting.

[13]  W. He.  Dynamic Simulations of Molten-Carbonate Fuel-Cell Systems , 2000 .

[14]  K. Agbossou,et al.  PEM Fuel Cells Modeling and Analysis Through Current and Voltage Transient Behaviors , 2008, IEEE Transactions on Energy Conversion.

[15]  A. Feliachi,et al.  Dynamic and transient analysis of power distribution systems with fuel Cells-part I: fuel-cell dynamic model , 2004, IEEE Transactions on Energy Conversion.

[16]  B V Rajanna,et al.  Defining Control Strategies for Micro Grids Islanded Operation with Maximum Power Point Tracking using a Fuzzy Logic Control Scheme , 2016 .

[17]  Reza Iravani,et al.  Voltage-Sourced Converters in Power Systems: Modeling, Control, and Applications , 2010 .

[18]  Kevin Tomsovic,et al.  Development of models for analyzing the load-following performance of microturbines and fuel cells , 2002 .

[19]  Miguel Castilla,et al.  Control of Power Converters in AC Microgrids , 2018, Microgrids Design and Implementation.