Coordination Control for Grid Connected Photovoltaic and Fuel Cell system

ABSTRACT: Power system plays important role for the generation of power from conventional sources, transmutation and distribution power at different consumer applications it will faces a so many problems. This can be overcome to implement the micro grid concept. The micro grid concept introduces the power is generated from the renewable energy sources like P.V Wind, Fuel cell, Micro Turbine etc will give signifying moment in near future. These power generating stations interconnected to form a micro grid system. IN this paper power generated from P.V and Fuel Cell (PEM). Here Both are the DC power generating stations for the purpose of power generating from the P.V in night time, rain session and cloud time face difficulties. this can be overcome to power is generating by using fuel cell and without any interruption of energy supplies to load and this system can interconnected to the utility grid and coordinately between these two system by using P-Q control theory in bidirectional converter system. This concept to reduces multiple reserve conversions and it will consists of both A.C and D.C networks connected to distribution generation through multi-bidirectional converters and to maintain stable operation of system by using proposed coordination schemes in the MATLAB simulink environment. KEYWORDS: micro grid, grid-tied mode, coordination control operations, PV system, Fuel Cell power generation. I.INTRODUCTION The ever increasing energy consumption, the soaring cost and the exhaustible nature of fossil fuel, and the worsening global environment have created increased interest in green [renewable based energy sources] power generation systems. Wind and solar power generation are two of the most promising renewable power generation technologies. The growth of wind and photovoltaic (PV) power generation systems has exceeded the most optimistic estimation. Nevertheless, because different alternative energy sources can complement each other to some extent, multisource hybrid alternative energy systems (with proper control) have great potential to provide higher quality and more reliable power to customers than a system based on a single resource. Because of this feature, hybrid energy systems have caught worldwide research attention A hybrid scheme consists of wind PV[3] array and fuel cell with power electronic convertors and power balancing controls are proposed in this paper for the purpose of reduces the reversible covert ions smooth power variation between sources and maintain stable operation in the system. The battery bank, which is charged during the daytime, will supply the inverter during the night to provide fuel cell necessary. when solar irradiation reaches its peak, the proposed scheme with appropriate choice of the sizes of the PV array and fuel cel