TY - JOUR
T1 - Thyristor junction temperature estimation based on measured temperature of molybdenum flat
AU - Zhang, Chunyu
AU - Li, Chengrong
AU - Han, Xiaohui
AU - Zha, Kunpeng
AU - Tang, Guangfu
PY - 2012/8/5
Y1 - 2012/8/5
N2 - A conjugate gradient method of thyristor junction temperature retrospected from measured temperature of molybdenum flat was introduced in this paper. Concrete steps of the conjugate gradient method for solving the junction temperature were analyzed and programmed successfully with ANSYS in FORTRAN. For unknown low and high frequency components, this algorithm obtains accurate solutions with less number of iterations, and gets exact retrospected temperature through multiple iterations, respectively. This method can provide high convergence speed with high accuracy, which has been proved to be more favorable in multiple variables simultaneously. Accuracy of this junction retrospected temperature has been validated by steady state, single wave and three waves surge current test conditions, taking a KPD3000-72 thyristor for instance. The retrospected junction temperature can provide verification basis for the traditional thermal impedance method.
AB - A conjugate gradient method of thyristor junction temperature retrospected from measured temperature of molybdenum flat was introduced in this paper. Concrete steps of the conjugate gradient method for solving the junction temperature were analyzed and programmed successfully with ANSYS in FORTRAN. For unknown low and high frequency components, this algorithm obtains accurate solutions with less number of iterations, and gets exact retrospected temperature through multiple iterations, respectively. This method can provide high convergence speed with high accuracy, which has been proved to be more favorable in multiple variables simultaneously. Accuracy of this junction retrospected temperature has been validated by steady state, single wave and three waves surge current test conditions, taking a KPD3000-72 thyristor for instance. The retrospected junction temperature can provide verification basis for the traditional thermal impedance method.
KW - Conjugate gradient method
KW - High voltage DC (HVDC)
KW - Junction temperature retrospect
KW - Thyristor
UR - https://www.scopus.com/pages/publications/84865964024
M3 - 文章
AN - SCOPUS:84865964024
SN - 0258-8013
VL - 32
SP - 195
EP - 201
JO - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
JF - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
IS - 22
ER -