Projekter pr. år
Abstract
Capacitors have been witnessed as one of the weak points in grid-connected PhotoVoltaic (PV) applications, and thus efforts have been devoted to the design of reliable DC-link capacitors in PV applications. Since the hot-spot temperature of the capacitor is one of the failure inducers, instantaneous thermal modeling approaches considering mission profiles for the DC-link capacitor in single-phase PV systems are explored in this paper. These thermal modelling approaches are based on: a) fast Fourier transform, b) look-up tables, and c) ripple current reconstruction. Moreover, the thermal modelling approaches for the DC-link capacitors take into account the instantaneous thermal characteristics, which are more challenging to the capacitor reliability during operation. Such instantaneous thermal modeling approaches enable a translation of instantaneous capacitor power losses to capacitor thermal loading from the operating conditions. As a consequence, it offers new insights into the temperature monitoring and reliability-oriented design of the DC-link capacitors, and thus a more reliable operation of single-phase grid-connected PV systems can be enhanced. Study results on a 3-kW single-phase grid-connected PV system have been adopted to demonstrate a look-up table based modelling approach, where real-field daily ambient conditions are considered.
Originalsprog | Engelsk |
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Titel | Proceedings of the 2015 IEEE Applied Power Electronics Conference and Exposition (APEC) |
Antal sider | 7 |
Forlag | IEEE Press |
Publikationsdato | mar. 2015 |
Sider | 2733-2739 |
ISBN (Trykt) | 978-1-4799-6735-3 |
DOI | |
Status | Udgivet - mar. 2015 |
Begivenhed | 30th Annual IEEE Applied Power Electronics Conference and Exposition - Charlotte, USA Varighed: 15 mar. 2015 → 19 mar. 2015 |
Konference
Konference | 30th Annual IEEE Applied Power Electronics Conference and Exposition |
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Land/Område | USA |
By | Charlotte |
Periode | 15/03/2015 → 19/03/2015 |
Navn | I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings |
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ISSN | 1048-2334 |
Fingeraftryk
Dyk ned i forskningsemnerne om 'Instantaneous thermal modeling of the DC-link capacitor in PhotoVoltaic systems'. Sammen danner de et unikt fingeraftryk.Projekter
- 1 Afsluttet
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Center Of Reliable Power Electronics (CORPE)
Blaabjerg, F., Munk-Nielsen, S., Pedersen, K. & Popok, V.
01/04/2011 → 31/12/2016
Projekter: Projekt › Forskning
Aktiviteter
- 1 Organisering af eller deltagelse i konference
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30th Annual IEEE Applied Power Electronics Conference and Exposition
Huai Wang (Deltager)
15 mar. 2015 → 19 mar. 2015Aktivitet: Deltagelse i faglig begivenhed › Organisering af eller deltagelse i konference