MPPT controlled wind energy conversion system(WECS) supplying DC micro-grid

摘要

Due to popularity and support, especially for wind, the use of renewable energy is increasing. This also enables the generation of electricity without the emission of polluting gasses. Renewable energy resources are used as substitute for fossil fuels in electrical power generation. MPPT tracks the optimal power for the given wind speed and maintains the output constant at maximum power even though the input varies. The trend is moving towards the DC micro-grid, which can supply DC loads at various voltages. The DC voltage is fed into a grid, which can supply various subsystems. By considering various factors, voltage levels of 24/48V suits best for residential and low power application. The battery can also be used to store DC voltage. AC loads can also be supplied using this grid by connecting an inverter to the grid. The renewable energy resources are used as substitutes for fossil fuels in electrical power generation. This P&O MPPT algorithm automatically finds the WECS current and voltage at which it delivers a better voltage. If the output power decreases or increases because of the perturbation, then the perturbation corresponding to it will be in the opposite or same direction. In this on-going and increasing energy demand, many countries have started using renewable sources for power generation and transmission, and distributed grids interconnecting generators. This demonstration is carried out using Matlab/Simulink software.