Kelebihan dan peningkatan teknologi hijau telah meluas di seluruh dunia. Ini telah menarik minat kerajaan untuk melabur dalam sektor ini dimana bilangan yang ketara kapasiti tenaga suria telah dipasang. Ini akan menyediakan sumber tenaga alternatif dalam masa yang sama untuk mengurangkan pergantungan terhadap fosil bahan api yang diimport. Permintaan pengkomersilan untuk teknologi suria meningkat selari dengan permintaan penguji photovoltan cahaya arus voltan (LIV). Penguji LIV digunakan untuk menguji dan mengesahkan prestasi peranti photovoltan melalui Penguji ciri-ciri lengkongan LIV dan parameter sel photovoltan. Penguji LIV digunakan secara meluas dalam penyelidikan dan pembangunan, perindustrian serta dalam aktiviti perdagangan. Penguji LIV yang boleh didapati secara komersial terlalu mahal untuk dimiliki. Kajian ini adalah satu usaha untuk mereka dan membangunkan kos rendah penguji cahaya arus voltan (LIV) sistem berdasarkan pengawal-mikro. Penguji ini yang direka dikendalikan berhampiran dengan piawaian ujian keadaan (STC) bagi mengukur peranti photovoltan. Piawaian ujian keadaan (STC) diuji pada suhu sel suria 25 °C, sinaran suria pada 1000 W/m2 atau keamatan sinaran suria bersamaan satu matahari dan jisim udara 1.5 (AM1. 5) spektrum. Daripada penguji I-V percanggahan dan ralat didapati kurang dari 4% untuk kedua voltan litar terbuka dan litar pintas semasa. Walau bagaimanapun, percanggahan kuasa maksimum mencapai kira-kira 21% kerana arus dan voltan mendapat rendah dari yang dijangka. Ini berlaku kerana faktor rintangan dalam sambungan wayar dan komponen dan ketepatan setup sinaran LED.
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The advantage and improvement of green technology have been widespread all over the world. This has attracted the interest of the government to invest in this sector in which significant solar power capacity had been installed. This will provide an alternative energy sources and at the same time reducing the dependency on expensive imported fossil fuels. The demand for solar technology increases in parallel with the demand of photovoltaic light current voltage (LIV) tester. LIV testers are used to test and verify performance of Photovoltaics devices through LIV curve characteristics and photovoltaic cell parameters. The LIV tester was used extensively in research and development, industrial as well as in commercial activities. The existing LIV testers that were available commercially was too expensive to own. This research is an attempt to design and develop low cost light current voltage (LIV) measurement system based on microcontroller. The tester will be designed and operated close to the standard test condition (STC) for measuring photovoltaic device. The STC test conditions are testing temperature of the sample at 25°C, Solar Irradiance at 1000 W/m2 or solar irradiation intensity of 1 Sun and air mass of 1.5 (AM1.5) spectrum. From the measurement of designed I-V tester gained discrepancy or error of less than 4% for both the open circuit voltage and short circuit current. Despite of that, the maximum power discrepancy reaches about 21% because the current and voltage gained were lower than expected result. This happen because factors of resistance in wires connection and components and accuracy of LED irradiance setup.
Design and development of light current voltage (liv) measurement system for solar cell based on microcontroller / Mohamad Hafiz Ahmad Azehar