Feasibility Analysis Of Modified High Gain Single Ended Primary Inductor Converter (SEPIC) Based DC-DC Converter In PV Applications

Maliha Maliat, Md Sakib Ur Rahman
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引用次数: 1

Abstract

This paper aims at a modified Single Ended Primary Inductor Converter (SEPIC) based switch mode DC-DC converter, which is appropriate for solar and industrial applications where efficient power conversion at desired voltage gain is required. In order to extract maximum power from PV systems, focusing on maximum power point tracking (MPPT) techniques has no alternative as generated power from PV system fluctuates significantly due to variations in atmospheric temperature and irradiation. Viability of using Perturb & Observe algorithm as MPPT control technique with proposed SEPIC in PV application has been also evaluated in this paper. A comparative simulation has been accomplished using PSIM9 at various duty cycles for both conventional and proposed SEPIC in order to maximize the voltage gain at convenient higher efficiency. Later on, modeling of PV system with Perturb and Observe method for different atmospheric conditions along with proposed SEPIC has also been executed using MATLAB/SIMULINK.
基于改进型高增益单端初级电感变换器(SEPIC)的DC-DC变换器在光伏应用中的可行性分析
本文的目的是改进单端初级电感变换器(SEPIC)为基础的开关模式DC-DC变换器,这是适用于太阳能和工业应用,在理想的电压增益需要有效的功率转换。由于大气温度和辐射的变化,光伏发电系统产生的功率波动很大,为了从光伏系统中提取最大功率,重点关注最大功率点跟踪(MPPT)技术是别无选择的。本文还评估了Perturb & Observe算法作为PV应用中带有SEPIC的MPPT控制技术的可行性。利用PSIM9在不同占空比下对传统和所提出的SEPIC进行了比较仿真,以便在方便的更高效率下最大化电压增益。随后,利用MATLAB/SIMULINK对不同大气条件下的PV系统进行了Perturb和Observe建模,并提出了SEPIC模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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