کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
300110 512470 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Shading and bypass diode impacts to energy extraction of PV arrays under different converter configurations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Shading and bypass diode impacts to energy extraction of PV arrays under different converter configurations
چکیده انگلیسی


• PV energy extraction study under different converter configurations.
• Without shading, no difference in energy yield for different converter schemes.
• Under shading and no bypass diodes, a micro-converter-based PV array is better.
• Bypass diodes enhance energy capture of a central-converter-based PV array.

A solar photovoltaic (PV) energy conversion system requires power converters for maximum power extraction and grid integration. At present, typical converter configurations used in a solar PV system include central, string and micro-converter based PV systems. In order to develop efficient and reliable photovoltaic energy conversion technologies, this paper compares the energy extraction characteristics of a PV system for different converter schemes. The paper particularly focuses on how energy extraction characteristics of a PV array are affected by uneven shading and how different bypass diode arrangements improve and affect PV system energy extraction characteristics under different converter configurations. A detailed comparison study is conducted for central, string and micro-converter based PV systems. It is found that compared to micro-converter based PV systems, the central converter PV systems with large-scale distributed bypass diode connections could be an economic solution to enhance PV system efficiency, reliability and performance, in particular for utility-scale PV generators.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 68, August 2014, Pages 58–66
نویسندگان
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