Effect of the Mission Profile on the Reliability of a Power Converter Aimed at Photovoltaic Applications—A Case Study

León-Aldaco, Susana Estefany De; Calleja, Hugo; Chan, F.; Jiménez-Grajales, Humberto Raúl

doi:10.1109/tpel.2012.2222673

Cited by 87 publications

(70 citation statements)

References 33 publications

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“…The mission profile has been witnessed as one determining factor of the failure in power converters [19], [20], [26], [27]. Thus, a mission profile based lifetime analysis approach [17] is extended in the following section considering both short-term and longterm mission profile effects.…”

Section: Mission Profile Based Reliability Analysismentioning

confidence: 99%

“…Regarding the reliability of PV inverters, it has become of intense importance and involves multiple disciplines [5], [7], [12]- [19]. The lifetime prediction research on power devices is transitioning from handbook-based approaches [18], [19] to more physics-based methods, which require in-depth understanding of various failure mechanisms and thus dedicated lifetime models, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The lifetime prediction research on power devices is transitioning from handbook-based approaches [18], [19] to more physics-based methods, which require in-depth understanding of various failure mechanisms and thus dedicated lifetime models, e.g. an analytical based Confin-Mason model [12]- [14], [16].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, the varying operation conditions due to the intermittent nature of solar energy has been one of the challenges to perform reliability analysis in PV systems. Currently, most of the existing reliability prediction methods for the lifetime estimation of power devices in PV inverters only consider either shortterm mission profiles [13], [14] or long-term mission profiles with a low data-sampling frequency, where the effects of small temperature cycles are not considered [19]. Moreover, the widely used lifetime models unfortunately consider only a few failure modes, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the widely used lifetime models unfortunately consider only a few failure modes, e.g. the junction temperature cycle amplitude and the mean junction temperature [16], [19]- [22]. However, improving the lifetime estimation accuracy requires an elaborated analysis of a long-term mission profile, and also a detailed reliability model.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Improved reliability of single-phase PV inverters by limiting the maximum feed-in power

Yang

Wang

Blaabjerg

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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Abstract-Grid operation experiences have revealed the necessity to limit the maximum feed-in power from PV inverter systems under a high penetration scenario in order to avoid voltage and frequency instability issues. A Constant Power Generation (CPG) control method has been proposed at the inverter level. The CPG control strategy is activated only when the DC input power from PV panels exceeds a specific power limit. It enables to limit the maximum feed-in power to the electric grids and also to improve the utilization of PV inverters. As a further study, this paper investigates the reliability performance of the power devices (e.g. IGBTs) used in PV inverters with the CPG control under different feed-in power limits. A long-term mission profile (i.e. solar irradiance and ambient temperature) based stress analysis approach is extended and applied to obtain the yearly electrical and thermal stresses of the power devices, allowing a quantitative prediction of the power device lifetime. A study case on a 3 kW single-phase PV inverter has demonstrated the advantages of the CPG control in terms of improved reliability.

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