Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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A Study on LCL Circuit for Satellite Power System Applying WBG Device

WBG 소자를 적용한 위성 전력 시스템용 LCL 회로에 관한 연구

  • Yoo, Jeong Sang (Department of Electronic Engineering, Cheongju University) ;
  • Ahn, Tae Young (Department of Electronic Engineering, Cheongju University) ;
  • Gil, Yong Man (Department of Electronic Engineering, Cheongju University) ;
  • Kim, Hyun Bae (Department of Electronic Engineering, Cheongju University) ;
  • Park, Sung Woo (Korea Aerospace Research Institute, KARI) ;
  • Kim, Kyu Dong (Korea Aerospace Research Institute, KARI)
  • Received : 2022.06.07
  • Accepted : 2022.06.23
  • Published : 2022.06.30
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Abstract

In this paper, WBG semiconductor such as SiC and GaN were applied as power switches for LCL circuit that can be applied to satellite power systems and the test results of the LCL circuit are reported. P-channel MOSFET and N-channel MOSFET, which were generally used in the conventional LCL circuit, were applied together to expand the utility of the test results. The design and stability evaluation were performed using a Micro Cap circuit simulation program. For the test circuit, a module using each switch was manufactured, and a total of 5 modules were manufactured and the steady state and transient state characteristics were compared. From the experimental results, the LCL circuit for power supply of the satellite power system constructed in this paper satisfied the constant current and constant voltage conditions under various operating conditions. The P-channel MOSFET showed the lowest efficiency characteristics, and the three N-channel switches of Si, SiC and GaN showed relatively high efficiency characteristics of up to 99.05% or more. In conclusion, it was verified that the on-resistor of the switch had a direct effect on the efficiency and loss characteristics.

Keywords

Acknowledgement

이 성과는(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No.NRF-2020M1A3A4A07078612).

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