کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5450881 1513061 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An MPPT technique for unshaded/shaded photovoltaic array based on transient evolution of series capacitor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
An MPPT technique for unshaded/shaded photovoltaic array based on transient evolution of series capacitor
چکیده انگلیسی
For maximum power point (MPP) application, the transient evolution of capacitor can be exploited to examine the power-voltage (P-V) characteristics of a photovoltaic (PV) array. This method is simple and inexpensive. In addition, it can be implemented on any array size whether un-shaded or partially shaded. This paper presents a new MPPT technique that scans the P-V curve of PV array with a series capacitor (Cscan) through a unique H-bridge architecture. The proposed technique employs a simple algorithm, which controls the H-bridge to scan the P-V curve in two sequences: (1) during charging of capacitor, and (2) during discharging of capacitor. The proposed MPPT neither requires the isolation of PV array from load nor executes power loss during checking of P-V curve. The effects of input capacitor (Cin) of converter during scanning of P-V curve are comprehensively discussed, and then the correct sizing of Cscan according to array size is explained with a design example. A comparative analysis of different MPPTs in the context of tracking ability, dynamic, and steady state efficiencies is presented. This analysis highlights the advantage of proposed technique over other MPPTs. Finally, the fundamental operation of proposed MPPT is verified through experimental results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 157, 15 November 2017, Pages 377-389
نویسندگان
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