3D Simulation of Electric Arcing and Pressure increase in an Automotive HVDC Relay During a Short Circuit Situation
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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3D Simulation of Electric Arcing and Pressure increase in an Automotive HVDC Relay During a Short Circuit Situation. / Ewuntomah, Crispin Masahudu; Oberrath, Jens.
ELECTRICAL CONTACTS 2020 - Proceedings of the 66th IEEE Holm Conference on Electrical Contacts and Intensive Course, HLM 2020. San Antonio : IEEE - Institute of Electrical and Electronics Engineers Inc., 2020. S. 58-64 9307918 (Electrical contacts (IEEE Holm Conference on Electrical Contacts Online); Nr. 66).Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
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TY - CHAP
T1 - 3D Simulation of Electric Arcing and Pressure increase in an Automotive HVDC Relay During a Short Circuit Situation
AU - Ewuntomah, Crispin Masahudu
AU - Oberrath, Jens
N1 - Conference code: 66
PY - 2020/9/30
Y1 - 2020/9/30
N2 - A short circuit situation in an electric vehicle can lead to several undesirable occurrences. One of such is the formation of high temperature electric arcs between the contacts of the high voltage direct current (HVDC) relays in the circuit. These arcs significantly vaporize the contacts within a few milliseconds. As a result, the pressure of the gas within the relay chamber significantly increases. Depending on the magnitude of the short circuit current, the pressure increase may lead to an explosion of the relay. To understand and quantify the pressure increase, a Panasonic AEV14012 relay is investigated. A short circuit experiment is conducted on the relay. The test results are compared with a numerical model established in COMSOL to simulate the electric arcing process. The temperature of the arcs is used to estimate the resulting vaporization. The simulation results show the arcing process and the resulting pressure increase within the relay chamber.
AB - A short circuit situation in an electric vehicle can lead to several undesirable occurrences. One of such is the formation of high temperature electric arcs between the contacts of the high voltage direct current (HVDC) relays in the circuit. These arcs significantly vaporize the contacts within a few milliseconds. As a result, the pressure of the gas within the relay chamber significantly increases. Depending on the magnitude of the short circuit current, the pressure increase may lead to an explosion of the relay. To understand and quantify the pressure increase, a Panasonic AEV14012 relay is investigated. A short circuit experiment is conducted on the relay. The test results are compared with a numerical model established in COMSOL to simulate the electric arcing process. The temperature of the arcs is used to estimate the resulting vaporization. The simulation results show the arcing process and the resulting pressure increase within the relay chamber.
KW - Engineering
KW - relays
KW - electrical contacts
KW - numerical models
KW - short circuit
KW - electric arc,
KW - pressure
KW - simulation
UR - http://www.scopus.com/inward/record.url?scp=85099692363&partnerID=8YFLogxK
U2 - 10.1109/HLM49214.2020.9307918
DO - 10.1109/HLM49214.2020.9307918
M3 - Article in conference proceedings
SN - 978-0-7381-2360-8
T3 - Electrical contacts (IEEE Holm Conference on Electrical Contacts Online)
SP - 58
EP - 64
BT - ELECTRICAL CONTACTS 2020 - Proceedings of the 66th IEEE Holm Conference on Electrical Contacts and Intensive Course, HLM 2020
PB - IEEE - Institute of Electrical and Electronics Engineers Inc.
CY - San Antonio
T2 - 66th IEEE Holm Conference on Electrical Contacts - IEEE Holm 2020
Y2 - 30 September 2020 through 7 October 2020
ER -