Numerical study of electrode vaporization rates in an Automotive HVDC Relay in hydrogen and open air in a short circuit situation
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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Proceedings of the 66th IEEE Holm Conference on Electrical Contacts, HLM 2021. Institute of Electrical and Electronics Engineers Inc., 2021. S. 24-31 (Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts; Band 2021-October).
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - Numerical study of electrode vaporization rates in an Automotive HVDC Relay in hydrogen and open air in a short circuit situation
AU - Ewuntomah, Crispin Masahudu
AU - Oberrath, Jens
N1 - Conference code: 66
PY - 2021
Y1 - 2021
N2 - The occurrence of electric arcs during the unintended separation of contacts often does significant damage to the contacts. In high voltage direct current (HVDC) relays, such unintended contact separation mostly occurs during short circuit situations, which lead to the supply of large magnitudes of electric currents to the relays. Due to the high temperature of the resulting electric arcs, the contacts of the relays are rapidly and significantly vaporized. The vaporization of the contacts of a Panasonic AEV14012 relay is investigated in hydrogen and open air. Two relay samples are tested under similar short circuit conditions. The experimental results are used to validate a numerical model established in COMSOL to model electric arcs. The temperature of the arcs is estimated from the results of the numerical model and are used to estimate the vaporization rates of the electrodes in hydrogen and open air.
AB - The occurrence of electric arcs during the unintended separation of contacts often does significant damage to the contacts. In high voltage direct current (HVDC) relays, such unintended contact separation mostly occurs during short circuit situations, which lead to the supply of large magnitudes of electric currents to the relays. Due to the high temperature of the resulting electric arcs, the contacts of the relays are rapidly and significantly vaporized. The vaporization of the contacts of a Panasonic AEV14012 relay is investigated in hydrogen and open air. Two relay samples are tested under similar short circuit conditions. The experimental results are used to validate a numerical model established in COMSOL to model electric arcs. The temperature of the arcs is estimated from the results of the numerical model and are used to estimate the vaporization rates of the electrodes in hydrogen and open air.
KW - contact vaporization
KW - electric arc
KW - electrical contacts
KW - numerical models
KW - relays
KW - short circuit
KW - simulation
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85124800638&partnerID=8YFLogxK
U2 - 10.1109/HLM51431.2021.9671143
DO - 10.1109/HLM51431.2021.9671143
M3 - Article in conference proceedings
AN - SCOPUS:85124800638
SN - 978-1-6654-2106-5
SN - 978-1-6654-2108-9
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 24
EP - 31
BT - Proceedings of the 66th IEEE Holm Conference on Electrical Contacts, HLM 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Holm Conference on Electrical Contacts - HLM 2021
Y2 - 24 October 2021 through 27 October 2021
ER -