Advanced Control Strategy for Stand-alone Solar Pv System with Dual Source Charging and Enhanced Battery Life

This paper proposes a Advanced control scheme for a stand-alone PV application. A two power stage approach has been used that consists of a front end high gain DC-DC converter followed by a three phase H-bridge inverter. A general reactive load has been considered. The control scheme uses abc to dq reference frame transformation. The active power demand is controlled by regulating the dc link voltage. Reactive power is controlled by varying the inverter output voltage magnitude. Provision for MPPT has been incorporated in the control scheme. As battery is involved due to MPPT and for providing power during the night time, special attention has been given to enhancing the battery life by ensuring that it is neither overcharged nor deep discharged. Yet, a dump load is not required to dissipate excess energy. A bidirectional converter is used to realize the battery interface with the dc link. All the analytical, simulation and experimental results of this work are included. The Additional advantage of this system includes the Dual Source Battery Charging Method, Solar and other alternative Source. The Control System includes the Sensing device which is give the priority for Solar Source. This system Suitable for Rural areas and hill Station. The Dual Source System we can Use Solar and Wind Energy or Solar and EB Source. The Solar Supply Available In Day Time and Wind Energy Produce the Maximum Power in Night Time.