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Title: Extended Pulse-Powered Humidity-Freeze Cycling for Testing Module-Level Power Electronics

Conference ·
OSTI ID:1411134
 [1];  [1];  [1];  [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)

An EMI suppression capacitor (polypropylene film type) failed by 'popcorning' due to vapor outgassing in pulse powered humidity-freeze cycles. No shorts or shunts could be detected despite mildly corroded metallization visible in the failed capacitor. Humidity-freeze cycling is optimized to break into moisture barriers. However, further studies will be required on additional module level power electronic (MLPE) devices to optimize the stress testing for condensation to precipitate any weakness to short circuiting and other humidity/bias failure modes.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
DOE Contract Number:
AC36-08GO28308
OSTI ID:
1411134
Report Number(s):
NREL/PR-5J00-68261
Resource Relation:
Conference: Presented at the NREL/SNL/BNL PV Reliability Workshops, 28 February - 2 March 2017, Lakewood, Colorado
Country of Publication:
United States
Language:
English