Invertis Journals of Renewable Energy

Manander Bangar ¹, Birinchi Bora ¹, Renu ¹, Rashmi Singh ¹, Supriya Rai ¹, O. S. Sastry ¹

Affiliations
1 National Institute of Solar Energy, Gurgaon, Gwalpahari, IN

Abstract

Concentrated photovoltaic (CPV) cells have always shown higher efficiencies (∼37%) compared to single junction high efficiency Maxeon cells(23%), HIT cells(22%) and the thin film CdTe (13%) cells/modules. However, outdoor field performance of these technologies does not reflect the similar performance, as shown under standard conditions. The techno-economic considerations for a specific site it is important to evaluate a technology as per field performance indicators such as annual yields (Yi) and Performance Ratio(PR). In this paper the performance of a multi junction solar cells based on III-V compound-materials (GaInP/GaInAs/Ge) concentrated photovoltaic (CPV) system with very high concentration ratio of 500X has been evaluated. The outdoor performance of CPV has been compared with the other high efficiency flat plate solar photovoltaic technologies under similar condition and same period of time. A radiation analysis on Direct Normal Incidence (DNI) has been also carried out throughout the year of 2011 for the test site to find out the suitability of CPV. It has been found that the CPV system showed lowest PR compared to the technologies.

Keywords

CPV, Flat Module, GaInP/GaInAs/Ge, PR, DNI.

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Renu ¹, Birinchi Bora ¹, Manander Bangar ¹, O. S. Sastry ¹, Supriya ¹, Rashmi Singh ¹

Affiliations
1 National Institute of Solar Energy, Village Gwalphari, Gurgaon-Faridabad Road, Gurgaon-122003, IN

Abstract

Ever since beginning of Jawaharlal Nehru National Solar Mission (JNNSM) in India, a boom is observed in the Solar Photovoltaic (SPV) applications. Usages of SPV water pumping systems for drinking water and irrigation purpose has increased. National Institute of Solar Energy (NISE) has established test facilities for evaluation of solar water pumping systems, and also studied various different SPV based water pumps of different capacities, types, and applications. It has been observed that the most of the pumps underperform due to poor design of the system, low efficiency of components and mismatch among components. It is observed that these pumps could have performed more efficiently if technical barrier discussed above are solved. This paper describes the major aspects needed to be incorporated in designing of SPV pumping systems. A specific case of assessment of two submersible pumps of same capacity and same type but with different array capacities has been presented. From experiment it found out that to maximise the water output of a solar water pumping system at a particular site, the incident radiation profile of that particular site should be studied& analysed and PV array capacity should be fixed according to a particular range of irradiance radiation where maximum annual irradiation has fallen.

Keywords

SPV, JNNSM, PV Array Designing, Submersible Pump, Irradiance.

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Birinchi Bora ¹, O. S. Sastry ¹, Yogesh Kumar Singh ¹, Ramayan Singh ¹, Kamlesh Yadav ¹, Vikrant Sharma ¹, Manander Bangar ¹, Mithilesh Kumar ¹

Affiliations
1 National Institute of Solar Energy, Gurgaon-122003, IN

Abstract

Performance of CdTe technology based PV modules in composite climate zone of India has been analyzed after 1.5 years of commissioning. The effect of module temperature and incident irradiance on generation of power by CdTe technology based PV modules has been studied by drawing contour graphs. Seasonal performance has also been studied to find out the most frequent conditions (MFC) at the site in terms of irradiance and module temperature. It is found that PR of CdTe technology is mainly governed by module temperature and most of the time, the hourly averaged PR of CdTe technology at composite climate zone of India is in the range 0.8 to 0.9.

Keywords

CdTe, Outdoor Performance, Module Temperature, Irradiance.

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