Micro grid plays an important role in power system. In recent years, renewable resources are becoming a most promising green energy sources all over the world for electricity production and for meeting out the today's demands, hence micro-grids are becoming widespread. A micro grid is a local energy grid with control capability, which means it can detach from the traditional grid and operates autonomously. The integration of Micro grid to the utility or grid through power electronic converters has risen worried about the quality of supply voltage. In this proposed work, in order to compensate for voltage sag and swell in the Micro grid system Dynamic Voltage Restorer (DVR) is used to inject three phase voltage in series and it is in synchronism with the transmission line voltages. The main objective is to enhance the Power Quality by using Dynamic Voltage Restorer (DVR) in a Solar PV and Battery integrated Renewable Energy System (RES) and to compensate the voltage profile. The system is simulated using MATLAB Simulink.
In this paper, an AC to DC rectifier circuit has been discussed and the simulation results are provided. This converter is very useful for the upcoming development of the electric vehicles charging technology. For producing steady DC from a rectified AC supply requires a smoothing circuit or filter. The main purpose of the filter circuit is to remove the ripple or ac components from the output of the diode circuit. So, to make the output DC pure, the filter circuit is used. The filter circuit may be inductive (built with only inductors in series) or capacitive (built with only capacitors in parallel) or Inductive-Capacitive (built with both inductors and capacitors). A voltage regulator which is used to maintain the constant output DC voltage. Design of the controller is detailed for reference. The converter will operate in continuous conduction mode (CCM). Finally, some selected experimental results are presented to verify the proposed theory.
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