Thermal Behavior of High-Frequency AC Capacitor Banks Considering Temperature-Dependent Resistivity of BOPP.

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Bibliographic Details
Title:	Thermal Behavior of High-Frequency AC Capacitor Banks Considering Temperature-Dependent Resistivity of BOPP.
Authors:	Yan, Guang-Tao¹ yanguangtao0895@163.com, Zhao, Yuetao² zhaoyuetao@just.edu.cn, Luo, Feixue³ feixue.luo@jiuxintech.com, Ou, Mingjie⁴ minjie.ou@jiuxintech.com, Xu, Jianhua⁴ jianhuaxu215@163.com
Source:	IAENG International Journal of Applied Mathematics. Jul2026, Vol. 56 Issue 7, p2760-2766. 7p.
Subjects:	Capacitor banks, Polypropylene films, Thermal resistance, Finite element method, Thermal properties, Resistance heating, Heat transfer, Electric fields
Abstract:	Under high-frequency AC conditions, capacitor banks experience significant thermal accumulation due to the combined effects of high electric fields and high-frequency currents, leading to performance degradation and potential safety risks. To overcome the limitations of conventional thermal models, which assume constant material properties, a nonlinear electrothermal finite element model incorporating the temperature-dependent resistivity of biaxially oriented polypropylene (BOPP) is developed herein. This model incorporates the electric field distribution, Joule heat generation, and heat transfer across multi-material interfaces under realistic operating conditions. According to this experimentally validated model, both internal heat generation and steady-state temperature rise are strongly influenced by the nonlinear temperature-dependent BOPP resistivity, which plays a key role in the thermal stability of high-frequency AC capacitor banks. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	Under high-frequency AC conditions, capacitor banks experience significant thermal accumulation due to the combined effects of high electric fields and high-frequency currents, leading to performance degradation and potential safety risks. To overcome the limitations of conventional thermal models, which assume constant material properties, a nonlinear electrothermal finite element model incorporating the temperature-dependent resistivity of biaxially oriented polypropylene (BOPP) is developed herein. This model incorporates the electric field distribution, Joule heat generation, and heat transfer across multi-material interfaces under realistic operating conditions. According to this experimentally validated model, both internal heat generation and steady-state temperature rise are strongly influenced by the nonlinear temperature-dependent BOPP resistivity, which plays a key role in the thermal stability of high-frequency AC capacitor banks. [ABSTRACT FROM AUTHOR]
ISSN:	19929978