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Study Dynamic Behavior of Fuel Cell Distributed Generation

Khojasteh, Meysam | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39850 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Abbaspour Tehrani Fard, Ali
  7. Abstract:
  8. The necessity of electrical energy, high cost of big power plants and high voltage transmission lines and also progressing of restructuring science has lead to the increasing of tendency to use the distributed generation in electrical industry. Among of different types of distributed generations, fuel cell power plants because of many advantages such as high efficiency, low emission, modular structure and ect., have a high potential to be used in power systems. The fuel cells produce electrical energy by chemical reactions. Due to the necessity of having the knowledge related to the chemical reaction which are effective on fuel cell, to study the fuel cell performance, this type of distributed generations are considered less by power engineers. In this project, at first an exact dynamic model of fuel cell is presented. This model is based on chemical reactions and thermodynamical equations and the mass and energy conservation law which are effective on fuel cell’s behaviour. This model can be used for dynamic study of power systems. Since the produced power by fuel cell units is DC, so to connect them to the power systems, the DC/DC and DC/AC power electronic converters are needed. Also the controlling of fuel cell power plant output power and voltage is done by power electronic converters. Hence, the rest of this project is about designing power electronic converters, which are used to connect the fuel cells to network and controlling them. Then different behavior of fuel cell units in different conditions and its effect on synchronous generator is evaluated
  9. Keywords:
  10. Dispersed Generation ; Stability ; Dynamics Models ; Fuel Cell ; Power Electronic Converter

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