Multi-input dc boost converter supplied by a hybrid PV/Wind turbine power systems for street lighting application connected to the grid

Hybrid Wind/PV systems are one efficient solution to supply power either directly to a utility grid or to an isolated load with other advantages include the long lifetime and low maintenance requirements. This paper proposes a hybrid energy system contains a multi-input converter (MIC) which combines (WT) and (PV) as renewable power sources of electrical energy. The proposed converter interfaces two unidirectional input power ports, a port for a storage element in a unified structure. The proposed structure utilizes only four power switches which are independently controlled with four different duty ratios. The system is responsible for provision of the power needed for lighting system under any circumstances to promotion of reliability of the lighting system. A new method of Maximum power point tracking strategy based on Newton-Raphson algorithm is presented for PMSG variable speed turbine generation system, which makes a high efficiency wind power system. Description of the proposed hybrid system along with detailed simulation results which verify its feasibility are given to demonstrate the availability of the proposed system by PSCAD/EMTDC software.