[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7471/ikeee.2020.24.3.677

Enhancement of energy efficiency of 3-phase inverter using LFS UMOSFET

Cheon, Jin-Hee (Dept. of Electronics Engineering, Sogang University)
Kim, Kwang-Soo (Dept. of Electronics Engineering, Sogang University)

Publication Information

Journal of IKEEE / v.24, no.3, 2020 , pp. 677-684 More about this Journal

Abstract

In this paper, the energy efficiency of a 4H-SiC UMOSFET with a local floating superjunction (LFS UMOSFET) was compared with a conventional P-shielding UMOSFET. For analysis, P-shielding UMOSFET and LFS UMOSFET were modeled for energy loss and junction temperature. As a result, LFS UMOSFET showed switching loss reduction of 20.6%. In addition, it was confirmed that LFS UMOSFET is applied to a 3-phase inverter, resulting in 33.2% lower power efficiency and 28.1% lower junction temperature than P-shielding UMOSFET. Electrical characteristics were simulated using Sentaurus TCAD, and the power circuit was simulated with the modelled UMOSFET using PSIM, a power circuit simulator.

Keywords

4H-SiC; UMOSFET; local floating superjunction; Energy loss; Efficiency;

Citations & Related Records

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