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Long-term field test of solar PV power generation using one-axis 3-position sun tracker
- Source :
-
Solar Energy . Sep2011, Vol. 85 Issue 9, p1935-1944. 10p. - Publication Year :
- 2011
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Abstract
- Abstract: The 1 axis-3 position (1A-3P) sun tracking PV was built and tested to measure the daily and long-term power generation of the solar PV system. A comparative test using a fixed PV and a 1A-3P tracking PV was carried out with two identical stand-alone solar-powered LED lighting systems. The field test in the particular days shows that the 1A-3P tracking PV can generate 35.8% more electricity than the fixed PV in a partly-cloudy weather with daily-total solar irradiation HT =11.7MJ/m2 day, or 35.6% in clear weather with HT =18.5MJ/m2 day. This indicates that the present 1A-3P tracking PV can perform very close to a dual-axis continuous tracking PV (). The long-term outdoor test results have shown that the increase of daily power generation of 1A-3P tracking PV increases with increasing daily-total solar irradiation. The increase of monthly-total power generation for 1A-3P sun tracking PV is between 18.5–28.0%. The total power generation increase in the test period from March 1, 2010 to March 31, 2011, is 23.6% in Taipei (an area of low solar energy resource). The long-term performance of the present 1X-3P tracking PV is shown very close to the 1-axis continuous tracking PV in Taiwan (). If the 1A-3P tracking PV is used in the area of high solar energy resource with yearly-average HT >17MJ/m2 day, the increase of total long-term power generation with respect to fixed PV will be higher than 37.5%. This is very close to that of dual-axis continuous tracking PV. The 1A-3P tracker can be easily mounted on the wall of a building. The cost of the whole tracker is about the same as the regular mounting cost of a conventional rooftop PV system. This means that there is no extra cost for 1A-3P PV mounted on buildings. The 1A-3P PV is quite suitable for building-integrated applications. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 0038092X
- Volume :
- 85
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Solar Energy
- Publication Type :
- Academic Journal
- Accession number :
- 64852530
- Full Text :
- https://doi.org/10.1016/j.solener.2011.05.001