Hybrid Power System Based Load Sharing and Maintaining the DC Voltage in UPS System

Power interruption is the major problem in many sectors, to overcome this issue Uninterruptible Power Supply is used. During emergency situation it is a reliable source. During backup time batteries are more efficient when supplied to low load. In case of connecting to heavy load, Pulsated power is extracted. This greatly reduces the lifetime of the battery and alters the battery cycle due to frequent charging and discharging. To overcome this issue ultra capacitors are used. The proposed method has a variable speed wind turbine using a permanent magnet synchronous generator (PMSG), integrated with the grid system. This combination will be reducing the wind turbine fluctuation and voltage variation. The design is simulated by using MATLAB Simulink. Results show that this method efficiently eliminates the battery stress and improve the power quality.