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- 摘要
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Photovoltaic Module Reliability || Qualification Testing
摘要： Chapter 3 described the types of accelerated stress tests that are typically applied to photovoltaic (PV) modules. These tests are used in research to evaluate how well modules perform in relation to the specific stresses applied during these tests. However, what the industry needs is a defined set of accelerated stress tests that can be applied to all modules in the same way. Such a set of tests are called Qualification Tests or often in Europe are referred to as Type Approval Testing. Qualification tests are a set of well‐defined accelerated stress tests developed out of a reliability program. They incorporate strict pass/fail criteria. Hoffman and Ross [1] defined the purpose of qualification testing as a means of rapidly detecting the presence of known failure or degradation modes in the intended environment(s). The stress levels and durations are limited so the tests can be completed within a reasonable amount of time and cost. One of the goals of Qualification testing is for a significant number of commercial module types to pass and that all subsequent production modules will be built the same way as the modules that were tested. Passing the Qualification test says the product meets the specific set of criteria, but doesn’t predict product lifetime nor indicate which product will last longer or which will degrade in operation. However, if properly designed, the Qualification test will be a good indicator that modules passing the test sequence will not suffer from infant mortality – that is they will survive for a reasonable amount of time in the field. The real usefulness of such a Qualification test sequence can only be validated by assessing the field performance of products that have successfully passed the test sequence.
关键词： failure or degradation modes,reliability program,pass/fail criteria,photovoltaic (PV) modules,Type Approval Testing,field performance,Qualification Tests,infant mortality
更新于2025-09-19 17:13:59
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[IEEE 2019 European Space Power Conference (ESPC) - Juan-les-Pins, France (2019.9.30-2019.10.4)] 2019 European Space Power Conference (ESPC) - The JUICE Photovoltaic Assembly - from prequalification coupons to full-scale qualification model
摘要： In the frame of the JUICE (JUpiter ICy moon Explorer) mission, Leonardo Spa has been selected as PVA supplier of the Solar Array module. Due to the demanding environmental and general requirements, it was necessary to develop specific technological solutions to fulfill the low temperature, low sun intensity and very high radiation levels linked to the Jovian specific environment. The paper illustrates this development process, verified with engineering coupons and then applied to full-scale qualification model, which test campaign is currently ongoing.
关键词： Solar cell,Solar panel,qualification,Solar Array,JUICE
更新于2025-09-16 10:30:52
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Melt pool monitoring for laser beam melting of metals: assistance for material qualification for the stainless steel 1.4057
摘要： Laser Beam Melting of Metals (LBM-M) is an additive manufacturing technique that is successfully applied for the manufacturing of complex parts, small batch series and prototypes. In LBM metallic parts are generated layer by layer directly from sliced CAD data. For each layer a thin powder layer is deposited and subsequently, irradiated by a focused laser beam, which is guided by a galvanometer scanner. A major drawback of this relatively new manufacturing technology is a limited material portfolio. Today, the whole procedure of material qualification is time-consuming and resource intensive because a fast and reliable modelling of the process is not yet possible. In this work we are going to show the results of a qualification procedure applying a coaxial melt pool monitoring system to determine suitable processing parameters for a material, which has not yet been processed. In this work, a stainless steel material was exemplarily used to proof the feasibility. Furthermore, we are discussing the usability of this methodology for the material qualification in LBM-M in general.
关键词： Laser Beam Melting,Additive Manufacturing,Stainless Steel,Material Qualification,Quality Assurance,Selective Laser Melting,Process Stability,Melt pool Monitoring
更新于2025-09-12 10:27:22