Maximum Power Point Tracking Of Pv Arrays And Wind Energy System Under Psc With Ic Technique

Abstract

An improved analysis of maximum power point tracking  with incremental conductance of wind energy system array under partial shaded condition is proposed in this paper. In this paper we use the IC techinque, it is used to track the maximum power point of the PV source. MPPT can minimize the system cost and maximize the array efficiency. The proposed system is simple and cost effective. In this paper, a novel two-stage MPPT method is presented to overcome this drawback. In the first stage, a method is proposed to determine the occurrence of PSC, and in the second stage, using a new algorithm that is based on ramp change of the duty cycle and continuous sampling from the P-V characteristic of the array, global maximum power point of array is reached. Open loop operation of the proposed method makes its implementation cheap and simple. The IC algorithm was designed to control the duty cycle of Buck Boost converter and to ensure the MPPT work at its maximum efficiency. The method is robust in the face of changing environmental conditions and array characteristics, and has minimum negative impact on the connected power system. By using the simulation results we can analyze the proposed method.

Index Terms— DC/DC converter, maximum power point tracking (MPPT), Incremental conductance method, Partial shading condition, wind generation system.