{ "item_title" : "Performance of Solar Energy Converters", "item_author" : [" G. Beghi "], "item_description" : "Solar cell and solar cell module have to be tested for their performance, i.e. their ability to produce electrical power under well-defined conditions of illumination and temperature. The need for performance measurements arises at various stages of development, design and production from different requirement: at the development level, the main objective is to as ess the performance of a new concept in comparison with state-of-the-art competitors; at the design level, performance data are required as input for the izing and dimensions of photovoltaic y tem operating under certain environmental conditions; at the produc- tion level, the cells and modules must be acceptance te ted against a set of specifications in order to separate deliverables from reject . For accurate performance measurements and calibration, several methods exist which can be generally categorised into two clas e: outdoor methods in natural sunlight, and indoor method, u ing imulated unlight or indirect analytical method . Depending on the purpose of a performance test, each of these method can offer specific advantage . Therefore, the various methods are not to be looked at as competing, but rather as complementary tool for the achievement of accurate electrical performance measurement .", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/9/40/119/815/9401198152_b.jpg", "price_data" : { "retail_price" : "54.99", "online_price" : "54.99", "our_price" : "54.99", "club_price" : "54.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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