TY - JOUR
T1 - Design for Accelerated Testing of DC-Link Capacitors in Photovoltaic Inverters Based on Mission Profiles
AU - Sangwongwanich, Ariya
AU - Shen, Yanfeng
AU - Chub, Andrii
AU - Liivik, Elizaveta
AU - Vinnikov, Dmitri
AU - Wang, Huai
AU - Blaabjerg, Frede
N1 - Funding Information:
Manuscript received March 27, 2020; revised June 2, 2020 and August 14, 2020; accepted October 5, 2020. Date of publication October 13, 2020; date of current version December 31, 2020. Paper 2020-SECSC-0548.R2, presented at the 2019 IEEE Applied Power Electronics Conference and Exposition, Anaheim, CA, USA, Mar. 17–21, and approved for publication in the IEEE TRANSAC-TIONS ON INDUSTRY APPLICATIONS by the Renewable and Sustainable Energy Conversion Systems Committee of the IEEE Industry Applications Society. This work was supported in part by Innovation Fund Denmark through the Advanced Power Electronic Technology and Tools project, in part by the Reliable Power Electronic-Based Power System project at the Department of Energy Technology, Aalborg University as a part of the Villum Investigator Program funded by the Villum Foundation, in part by the Estonian Research Council under Grant PUT1443, and in part by the Estonian Centre of Excellence in Zero Energy and Resource Efficient Smart Buildings and Districts (ZEBE) under Grant 2014-2020.4.01.15-0016 funded by the European Regional Development Fund. (Corresponding author: Ariya Sangwongwanich.) Ariya Sangwongwanich, Huai Wang, and Frede Blaabjerg are with the Department of Energy Technology, Aalborg University, DK-9220 Aalborg, Denmark (e-mail: [email protected]; [email protected]; [email protected]).
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - The dc-link capacitor is considered as a weak component in photovoltaic (PV) inverter systems and its reliability needs to be evaluated and tested during the product development. Conventional reliability testing methods for capacitors are typically carried out under constant loading conditions, which do not reflect the real operating conditions (e.g., mission profile) of the dc-link capacitor in PV inverters. To address this issue, a new reliability testing concept for the dc-link capacitor in PV inverters is proposed in this article. In contrast to the conventional method, the proposed reliability testing method designs the test profile through the modification of the original mission profile (e.g., solar irradiance and ambient temperature) in order to maintain the test condition as close to the real application as possible. A certain acceleration factor is applied during the mission profile modification based on the lifetime model of the capacitor, in order to increase the thermal stress of the dc-link capacitor during test, and thereby effectively reduce the testing time.
AB - The dc-link capacitor is considered as a weak component in photovoltaic (PV) inverter systems and its reliability needs to be evaluated and tested during the product development. Conventional reliability testing methods for capacitors are typically carried out under constant loading conditions, which do not reflect the real operating conditions (e.g., mission profile) of the dc-link capacitor in PV inverters. To address this issue, a new reliability testing concept for the dc-link capacitor in PV inverters is proposed in this article. In contrast to the conventional method, the proposed reliability testing method designs the test profile through the modification of the original mission profile (e.g., solar irradiance and ambient temperature) in order to maintain the test condition as close to the real application as possible. A certain acceleration factor is applied during the mission profile modification based on the lifetime model of the capacitor, in order to increase the thermal stress of the dc-link capacitor during test, and thereby effectively reduce the testing time.
KW - Accelerated testing
KW - capacitors
KW - mission profile
KW - photovoltaic (PV) inverters
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=85098859371&partnerID=8YFLogxK
U2 - 10.1109/TIA.2020.3030568
DO - 10.1109/TIA.2020.3030568
M3 - Article
AN - SCOPUS:85098859371
SN - 0093-9994
VL - 57
SP - 741
EP - 753
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 1
M1 - 9222297
ER -
