Modeling and control of hybrid ac/dc microgrid

Priyadarshanee, Lipsa (2012) Modeling and control of hybrid ac/dc microgrid. MTech thesis.



Renewable energy based distributed generators (DGs) play a dominant role in electricity production, with the increase in the global warming. Distributed generation based on wind, solar energy, biomass, mini-hydro along with use of fuel cells and microturbines will give significant momentum in near future. Advantages like environmental friendliness, expandability and flexibility have made distributed generation, powered by various renewable and nonconventional microsources, an attractive option for configuring modern electrical grids. A microgrid consists of cluster of loads and distributed generators that operate as a single controllable system. As an integrated energy delivery system microgrid can operate in parallel with or isolated from the main power grid. The microgrid concept introduces the reduction of multiple reverse conversions in an individual AC or DC grid and also facilitates connections to variable renewable AC and DC sources and loads to power systems. The interconnection of DGs to the utility/grid through power electronic converters has risen concerned about safe operation and protection of equipment’s. To the customer the microgrid can be designed to meet their special requirements; such as, enhancement of local reliability, reduction of feeder losses, local voltages support, increased efficiency through use of waste heat, correction of voltage sag or uninterruptible power supply. In the present work the performance of hybrid AC/DC microgrid system is analyzed in the grid tied mode. Here photovoltaic system, wind turbine generator and battery are used for the development of microgrid. Also control mechanisms are implemented for the converters to properly co-ordinate the AC sub-grid to DC sub-grid. The results are obtained from the MATLAB/ SIMULINK environment.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Distributed generation, Grid tied mode, Renewable energy,MATLAB/SIMULINK
Subjects:Engineering and Technology > Electrical Engineering > Power Systems > Renewable Energy
Engineering and Technology > Electrical Engineering > Power Electronics
Divisions: Engineering and Technology > Department of Electrical Engineering
ID Code:3938
Deposited On:12 Jun 2012 09:35
Last Modified:12 Jun 2012 10:51
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Supervisor(s):Panda, A K

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