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Abstract
The dc-link capacitor is one of the lifetime-limiting components in the photovoltaic (PV) micro-inverters, whose reliability should be evaluated carefully during the design. In micro-inverters, the PV module size (e.g., number of cells) is the parameter that determines the power rating of the PV module. The PV module size employed in the micro-inverter can vary for different manufacturers, and this variation can strongly affect the thermal stress and reliability of the dc-link capacitor in micro-inverters. To address this issue, an experimental-based reliability assessment is carried out in this paper using a two stage micro-inverter where 60-cell and 72-cell PV modules are considered. Three different daily mission profiles are employed during the experimental test. The thermal stress and reliability of the dc-link capacitor under different operating conditions are evaluated together with the energy yield. The results indicate that employing a 60-cell PV module is more beneficial for the micro-inverter, especially during a clear day, where 19 % more energy can be captured during the entire lifespan of the micro-inverter. Thus, using the 60-cell PV module offers a better tradeoff between the reliability and energy yield of the micro-inverter.
Originalsprog | Engelsk |
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Titel | Proceedings of 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia) |
Antal sider | 6 |
Udgivelsessted | Korea |
Forlag | IEEE Press |
Publikationsdato | maj 2019 |
Sider | 1867-1872 |
Artikelnummer | 8797298 |
ISBN (Trykt) | 978-1-7281-1612-9 |
ISBN (Elektronisk) | 978-89-5708-313-0 |
Status | Udgivet - maj 2019 |
Begivenhed | 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia) - Busan, Sydkorea Varighed: 27 maj 2019 → 30 maj 2019 |
Konference
Konference | 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia) |
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Land/Område | Sydkorea |
By | Busan |
Periode | 27/05/2019 → 30/05/2019 |
Navn | International Conference on Power Electronics |
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ISSN | 2150-6078 |
Fingeraftryk
Dyk ned i forskningsemnerne om 'Reliability of DC-link Capacitors in Two-Stage Micro-Inverters Under Different PV Module Sizes'. Sammen danner de et unikt fingeraftryk.Projekter
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