Conference Papers
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Item Combined model of fuel cell and microturbine based distributed generation system(2011) Nayak, S.K.; Gaonkar, D.N.; Kumar, A.S.Distributed Generation (DG) play an active role in the distribution network due to its minimum loss, maximum efficiency and environmental impact. Moreover DG can supply base load power which improves the system stability, reliability and power quality. Among the different combined DG systems like solar with wind, tidal with geothermal and others, fuel cell with microturbine is the most economical due to fuel flexibility and inner relation between each other. The hybrid system can utilize exhaust fuel and heat from fuel cell to increase the system efficiency. This paper investigates combined model solid oxide fuel cell/microturbine generator (SOFC/MTG) hybrid system, in which the anode exhaust of SOFC contains reminder of fuel. The exhaust hot gas and waste fuel are mixed with fresh fuel and compressed air is burned inside the burner. The pressurized hot gas from the combustor is expanded through turbine driving the Permanent Magnet Synchronous Machine (PMSM). The governing schemes of combined SOFC/MTG (Fuel & air flow) are controlled by the DC link voltage and current. The generated power of MTG is converted to AC/DC/AC to combine with fuel cell and frequency conversion. The hybrid model of SOFC/MTG with power converter is developed in MATLAB/Simulink library and simulation result shows transient response of hybrid SOFC/MTG DG system. © 2011 IEEE.Item Thermal and electrical model of fuel cell in connected to grid/isolated mode(2012) Nayak, S.K.; Gaonkar, D.N.The fuel cell based distributed generation (DG) system are gaining more attention due to stationary operation, reliable power and less maintenance. Among the different types of fuel cell, one of the high temperatures operating promising Solid Oxide Fuel Cell (SOFC) is preferred due to reliable operation and co-generation purpose. This paper presents the thermal and electrical model of SOFC in connected to the grid and isolated model of operation through power electronics interfacing circuit. The developed model SOFC includes the mathematical expression for thermal and electrical parameter variation inside the fuel cell. The developed model for this study is implemented using Matlab/Simulink environment and the simulation results reported in this paper validated the load following performance of SOFC based DG system. © 2012 IEEE.Item Modeling and performance analysis of hybrid fuel cell and microturbine based distributed generation system, 'A review'(2013) Nayak, S.K.; Gaonkar, D.N.The hybrid fuel cell and microturbine based distributed generation(DG) systems are predicted to play an important role in power distribution network in the near future. There are several models of hybrid DG sources such as, wind turbine generation with photovoltaic, tidal with geothermal, fuel cell with gas turbine, stealing engine with fly wheel and many more. Among all these source of DG fuel cell and microturbines are the well suitable hybrid DG system due to their power matching, size and operational relation. This paper presents the current status and future development of hybrid fuel cell and microturbine generation system and the research work of various issues related to their interconnection, operation and control in connected to the power distribution network. © 2013 IEEE.Item Performance of microturbine generation system in grid perturbation condition(2013) Nayak, S.K.; Gaonkar, D.N.The distributed generation (DG) with microturbine generation (MTG) system is an emerging approach for providing a quality power in the distribution network. Thus, interconnection of MTG system into the distribution network has to withstand several grid issues, such as, balanced voltage dip, unbalanced voltage, voltage swell and many more. This paper presents the performance of MTG system in utility interconnected mode along with consideration of grid perturbation. The developed model of MTG system includes a microturbine as a prime mover, permanent magnet synchronous generator (PMSG) and power electronics interfacing circuit for grid interface. The performance of MTG system is analyzed in grid connected mode along with grid disturbances developed in Matlab/Simulink environment. The programmable voltage source is used to inject the grid disturbance. © 2013 IEEE.Item Fuel cell based hybrid distributed generation systems, 'a review'(2013) Nayak, S.K.; Gaonkar, D.N.Fuel cell is most promising power source for hybrid operation with conventional and non-conventional energy source. This is due to its operating temperature, power matching and remote application. The fuel cell based distributed generator (DG) source can be operated in combined with wind turbine, photovoitaic's generation system, gas turbine and many more. The hybrid operation of fuel cell with conventional DG source may increase the reliability, power quality and system stability. This paper presents the hybrid operation of fuel cell with other conventional DG system in utility interconnected mode. In this, it is addressed that, the fuel cell and its hybrid operation with other power generation application are given. The solid oxide fuel cell (SOFC) and microturbine based DG system are more preferred for the efficiency, reliability and performance related issues. © 2013 IEEE.Item Power management of hybrid fuel cell and microturbine based DG system in utility connected mode(Institute of Electrical and Electronics Engineers Inc., 2014) Nayak, S.K.; Gaonkar, D.N.The distributed generation (DG) with fuel cell and microturbine generation (MTG) system is an emerging approach to provide a quality power in the distribution network though the renewable and nonrenewable energy resources. Thus, interconnection of fuel cell MTG based DG system to the distribution network has to withstand several grid issues. This paper presents the hybrid operation of fuel cell and MTG based DG system in utility interconnected mode. The hybrid DG system includes a solid oxide fuel cell (SOFC) and MTG system with DC link based air and fuel flow control strategy to limit their output power. The hybrid SOFC and MTG system are integrated at common at common DC link and is delivered to grid through the power electronics interfacing. The model of hybrid DG system with SOFC and MTG system is presented using Matlab/Simulink environment and it performance has been studied through the simulation. © 2014 IEEE.