TY - GEN
T1 - Analysis of Thermal Characteristics of Switch Cabinet with Multi-Physics Field Coupling Method
AU - Tang, Nian
AU - Xu, Hongyu
AU - Bai, Xiaofeng
AU - Li, Xingwen
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/9/30
Y1 - 2020/9/30
N2 - Overheating is one of the key factors affecting the normal service life of switch cabinets. Therefore, it is of great significance to find out methods to reduce the temperature rise of the switch cabinet. In this paper, based on a 400V low-voltage switchgear, a three-dimensional simulation model is established using the electromagnetic-thermal-fluid multi-physics coupling method. Under the conditions of simulating natural convection, considering eddy current effects, proximity effects, and skin effects, heat transfer methods such as thermal conduction, thermal convection, and thermal radiation are comprehensively used to calculate and analyze the thermal distribution characteristics of the distribution cabinet shells and three-phase current-carrying conductors. Moreover, a temperature-rise experiment is performed to verify the feasibility and accuracy of the electromagnetic-thermal-fluid multi-physics coupling method and the accuracy and effectiveness of the calculation model under the current simulation conditions. In addition, in order to reduce the temperature rise of the cabinet, A strategy for optimizing the switchgear is proposed, and the heat distribution characteristics of the optimized model is calculated using the multi-physics coupling method. The results show that the temperature rise of the switch cabinets of the scheme has been reduced in different degrees, which effectively solves the overheating problem of the switch cabinet.
AB - Overheating is one of the key factors affecting the normal service life of switch cabinets. Therefore, it is of great significance to find out methods to reduce the temperature rise of the switch cabinet. In this paper, based on a 400V low-voltage switchgear, a three-dimensional simulation model is established using the electromagnetic-thermal-fluid multi-physics coupling method. Under the conditions of simulating natural convection, considering eddy current effects, proximity effects, and skin effects, heat transfer methods such as thermal conduction, thermal convection, and thermal radiation are comprehensively used to calculate and analyze the thermal distribution characteristics of the distribution cabinet shells and three-phase current-carrying conductors. Moreover, a temperature-rise experiment is performed to verify the feasibility and accuracy of the electromagnetic-thermal-fluid multi-physics coupling method and the accuracy and effectiveness of the calculation model under the current simulation conditions. In addition, in order to reduce the temperature rise of the cabinet, A strategy for optimizing the switchgear is proposed, and the heat distribution characteristics of the optimized model is calculated using the multi-physics coupling method. The results show that the temperature rise of the switch cabinets of the scheme has been reduced in different degrees, which effectively solves the overheating problem of the switch cabinet.
KW - eddy current effects
KW - proximity effects
KW - skin effects
KW - switch
KW - temperature rise
UR - https://www.scopus.com/pages/publications/85099695580
U2 - 10.1109/HLM49214.2020.9307906
DO - 10.1109/HLM49214.2020.9307906
M3 - 会议稿件
AN - SCOPUS:85099695580
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 28
EP - 34
BT - ELECTRICAL CONTACTS 2020 - Proceedings of the 66th IEEE Holm Conference on Electrical Contacts and Intensive Course, HLM 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 66th IEEE Holm Conference on Electrical Contacts and Intensive Course, HLM 2020
Y2 - 30 September 2020 through 7 October 2020
ER -