Search results for: Dirk C. Jordan

Items from 1 to 13 out of 13 results

article

Future‐proofing photovoltaics module reliability through a unifying predictive modeling framework

Martin Springer, Dirk C. Jordan, Teresa M. Barnes

Progress in Photovoltaics: Research and Applications > 31 > 5 > 546 - 553

Solar energy, especially photovoltaics (PV), plays a significant role in the global energy transition required for decarbonization. Technological advancements in increasing efficiencies coupled with cost reductions through economies of scale made PV a cost‐competitive energy source set to exceed the milestone of 1 TW globally deployed capacity in 2022. However, ongoing downward price pressure coupled...

article

Photovoltaic fleet degradation insights

Dirk C. Jordan, Kevin Anderson, Kirsten Perry, Matthew Muller, more

Progress in Photovoltaics: Research and Applications > 30 > 10 > 1166 - 1175

In the PV Fleet Performance Data Initiative, high‐frequency data from commercial and utility‐scale photovoltaic (PV) systems have been collected to examine performance loss rates (PLRs) at a fleet scale. To date, performance data from more than 7.2‐gigawatt (GW) capacity, 1700 sites and 19,000 inverters—approximately equivalent to 6% to 7% of the entire US PV market—have been collected. An overall...

article

PV field reliability status—Analysis of 100 000 solar systems

Dirk C. Jordan, Bill Marion, Chris Deline, Teresa Barnes, more

Progress in Photovoltaics: Research and Applications > 28 > 8 > 739 - 754

In this study, we analyzed annual production data from 100 000 photovoltaic systems as well as comments relating to their performance and maintenance. Our analysis revealed that 80% to 90% of all systems performed within 10% of the predicted production or better. Also, 56% of the systems were still performing above P50 or the median at 5 years. However, a small but significant tail of about 7000 systems...

article

Silicon Heterojunction System Field Performance

Dirk C. Jordan, Chris Deline, Steve Johnston, Steve R. Rummel, more

IEEE Journal of Photovoltaics > 2018 > 8 > 1 > 177 - 182

A silicon heterostructure photovoltaic system fielded for 10 years has been investigated in detail. The system has shown degradation, but at a rate similar to an average Si system, and still within the module warranty level. The power decline is dominated by a nonlinear V_oc loss rather than more typical changes in I_sc or Fill Factor. Modules have been evaluated using multiple techniques including:...

article

Evaluation and modeling of the potential effects of a module manufacturing anomaly

Michael D. Kempe, Dirk C. Jordan

Progress in Photovoltaics: Research and Applications > 25 > 12 > 982 - 988

Photovoltaic lifetime predictions are in great demand, but are exceedingly difficult to achieve with uncertainties small enough to be useful. During the construction of photovoltaic modules, small unplanned variability in materials or processes can have profound effects on module durability. Thus, continual monitoring of production quality is needed. In the subject production run, module quality,...

article

PV degradation curves: non‐linearities and failure modes

Dirk C. Jordan, Timothy J. Silverman, Bill Sekulic, Sarah R. Kurtz

Progress in Photovoltaics: Research and Applications > 25 > 7 > 583 - 591

Photovoltaic (PV) reliability and durability have seen increased interest in recent years. Historically, and as a preliminarily reasonable approximation, linear degradation rates have been used to quantify long‐term module and system performance. The underlying assumption of linearity can be violated at the beginning of the life, as has been well documented, especially for thin‐film technology. Additionally,...

article

Photovoltaic failure and degradation modes

Dirk C. Jordan, Timothy J. Silverman, John H. Wohlgemuth, Sarah R. Kurtz, more

Progress in Photovoltaics: Research and Applications > 25 > 4 > 318 - 326

The extensive photovoltaic field reliability literature was analyzed and reviewed. Future work is prioritized based upon information assembled from recent installations, and inconsistencies in degradation mode identification are discussed to help guide future publication on this subject. Reported failure rates of photovoltaic modules fall mostly in the range of other consumer products; however, the...

article

Compendium of photovoltaic degradation rates

Dirk C. Jordan, Sarah R. Kurtz, Kaitlyn VanSant, Jeff Newmiller

Progress in Photovoltaics: Research and Applications > 24 > 7 > 978 - 989

Published data on photovoltaic (PV) degradation measurements were aggregated and re‐examined. The subject has seen an increased interest in recent years resulting in more than 11 000 degradation rates in almost 200 studies from 40 different countries. As studies have grown in number and size, we found an impact from sampling bias attributable to size and accuracy. Because of the correlational nature...

chapter

PV degradation methodology comparison — A basis for a standard

Dirk C. Jordan, Michael G. Deceglie, Sarah R. Kurtz

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) > 273 - 278

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)

What is the best method to determine long-term PV system performance and degradation rates? Ideally, one universally applicable methodology would be desirable so that a single number could be derived. However, data sets vary in their attributes and evidence is presented that defining two methodologies may be preferable. Monte Carlo simulations of artificial performance data allowed investigation of...

article

Performance and Aging of a 20-Year-Old Silicon PV System

Dirk C. Jordan, B. Sekulic, B. Marion, Sarah R. Kurtz

IEEE Journal of Photovoltaics > 2015 > 5 > 3 > 744 - 751

This paper examines the long-term performance of a 20-year-old crystalline silicon system. The degradation was found to be about 0.8%/year and is consistent with historical averages. In contrast with the majority of historical degradation, the decline for this particular system is more attributable to fill factor (FF) than to short-circuit current (Isc). The underlying cause was determined to be an...

article

Direct analysis of the current density vs. voltage curves of a CdTe module during outdoor exposure

Carolin Ulbrich, Dirk C. Jordan, Sarah R. Kurtz, Andreas Gerber, more

Solar Energy > 2015 > 113 > C > 88-100

Current density–voltage (JV) curves of a CdTe photovoltaic module measured during 2.5years of outdoor operation are analyzed using a phenomenological four-parameter equation. This approach is shown to be more accurate than fitting the same data set to the conventional five parameter diode equation. The four extracted parameters are the short-circuit current density J_sc, open-circuit voltage V_oc, and...

article

Field Performance of 1.7 GW of Photovoltaic Systems

Dirk C. Jordan, Sarah R. Kurtz

IEEE Journal of Photovoltaics > 2015 > 5 > 1 > 243 - 249

This paper presents performance data from nearly 50 000 photovoltaic systems totaling 1.7 GW of capacity installed in the USA from 2009 to 2012. Most systems without reported issues, about 90%, produced greater than 90% of the electricity predicted before installation. The data were shown to be consistent with the assumption of historical degradation rates of about 0.5% per year; excessive degradation...

article

The Dark Horse of Evaluating Long-Term Field Performance—Data Filtering

Dirk C. Jordan, Sarah R. Kurtz

IEEE Journal of Photovoltaics > 2014 > 4 > 1 > 317 - 323

This paper addresses an issue of long-term performance that has seen relatively little attention in the industry, yet we will show that it can be of vital importance, not only for obvious financial reasons but, technically, because of its linkage to field failure as well. We will discuss how different data filtering on one particular system can lead to a variety of different degradation rates compared...

Filter options

Publication date

Last 3 years (2)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

INFONA - science communication portal

Search results for: Dirk C. Jordan

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options