HARMONIC ANALYSIS FOR SOLAR PV ARRAY FED VSI USING CURRENT CONTROLLER

A common method in the study of voltage source inverters is the hypothesis of a voltage-type input source even in the case of renewable energy (RE). The converter is supplied by an renewable energy sources, such as a Solar photovoltaic Array, the dc-link voltage is controlled by the converter with the closed loop to extract the maximum power from the solar PV. The main aim of the paper is to reduce the harmonics by the low pass filter and analyze the total harmonic distortion with current controller technique in three level voltage source inverter. The use of perturb and observe MPPT will help to produce high output efficiency from solar PV cell. The simulation result for the paper is analysed using MATLAB/SIMULINK software and the values for the total harmonic distortion is calculate

THD ANALYSIS IN THREE PHASE-THREE LEVEL VSI WITH MPPT TRACKER AND SEPIC CONVERTER FOR SOLAR PV ARRAY

This paper deals with the analysis of total harmonic distortion in three phase three level voltage source inverter (VSI) for the solar photovoltaic array. The Voltage source inverter as used in high power applications here we are using for the Renewable Energy as Application. The result for the Voltage Source Inverter will be quasi square wave or square wave. The Harmonics will be high if we are using the low level inverter. The 1200 or 1800 are the two modes of operation for voltage source inverter and its choose based upon its application. The MPPT technique is used to get the maximum power from the Solar PV. The SEPIC converter is DC-DC converter in which it can operates either buck or boost modes and it eliminates the ripples by using the filter. In order to improve the efficiency the SEPIC and Perturb and Observe Technique is used. The focus of the paper is to analyze and reduce the Total Harmonic Distortion with the MPPT Technique and DC-DC converter and its connected to the Grid. The simulation results for the paper and the THD values are calculated for voltage source inverter (VSI) are given below [13], [14]