Design of highly compact short‐time duty power inductors for supercapacitor charging applications. Issue 18 (18th February 2021)

• Record Type: Journal Article
• Authors: Zhang, Xinsheng; Wang, Ruitian; Xiao, Fei; Fan, Xuexin; Yang, Guorun; Yang, Beichao
• Is Part Of: IET power electronics. Volume 13:Issue 18(2020)
• Page Start: 4377
• Page End: 4385
• Publication Date: 2021-02-18
• Subjects: finite element analysis -- power inductors -- cooling -- supercapacitors -- transient analysis -- plates (structures) -- optimisation -- thermal analysis -- prototypes; short‐time duty power inductor -- multioutput supercapacitor charging applications -- power inductors -- transient thermal prediction -- transient thermal model -- multiobjective optimisation design method -- highly compact design -- medium‐voltage supercapacitor -- water cooling plate -- finite‐element method -- programming control -- power 400.0 kW -- current 182.0 A -- frequency 2.0 kHz -- voltage 15.0 kV; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2020.0891
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : For medium‐voltage, large‐capacity, multi‐output supercapacitor charging applications, power inductors play an important role in filtering and energy storage. For a short‐time duty power inductor, the major design challenge is accurate transient thermal prediction, which goes beyond the scope of the empirical method. A transient thermal model that considers water‐cooling plates was constructed to predict thermal performance. On this basis, this study presents a novel multi‐objective optimisation design method, where the analytical method and the finite‐element method were combined through programming control to balance accuracy and efficiency. Furthermore, a short‐time duty 400 kW/182 A/2 kHz/15 kV power inductor prototype was designed and manufactured. Compared with the results of the 30‐minute thermal experiment, the calculation error is no >7.0%, which is significant for the accurate and highly compact design of the short‐time duty power inductor.