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조혁진(Hyokjin Cho),이상훈(Sang-Hoon Lee),서희준(Hee-Jun Seo),문귀원(Guee-Won Moon),최석원(Seok-Weon Choi),정상헌(Sang-Hun Jung) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Multi-channel power supply system for the thermal control of the satellite inside the thermal vacuum chamber which simulates the orbit environment was established and tested. With a cold background simulating deep space by the thermal shroud filled with liquid nitrogen, the heat flux from the sun and earth is simulated by the heat injection into the patch-type heaters attached on the satellite surfaces from the power supply system. Totally 100 power supplies with 750 W (150 VDC, 5 A) capacity each were implemented and validated through the thermal balance test for structural and thermal model of low earth orbit satellite. In this paper, the development and validation results of multi-channel power supply system including hardware configuration, control logics, and safety concerns were described.
전기자동차의 주행 환경을 고려한 전기자동차 배터리 성능 및 노화 테스트 시스템 개발과 고찰
박정인(Jungin Park),주용호(Yongho Joo),김현준(Hyunjun Kim),최웅철(Woongchul Choi) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
Electric vehicles were first developed way back in 1830s and became quite popular in 1910s. However, with the massive discovery of the crude oil in Texas and with the rapid development of IC engine vehicles, the EV disappeared due to its limited capacity of electric energy storage. As shown in the history, the main issue with the successful deployment of the EV is heavily related to the battery technology especially for its power and energy densities. In this paper, a battery test system is introduced. The test system is developed from scratch using a LabVIEW from National Instruments with appropriate hardware. The current test system is designed to accomodate electrical discharge and charge power profile derived from a specific driving cycle with a specific vehicle type. In other words, power profile can be chased every second to follow the vehicle driving cycle. With this setup, it is fully expected to evaluate batteries with load profiles under realistic driving conditions. Furthermore, it is also expected to test the battery to investigate the aging characterics under the realistic load conditions.
채용웅(Yong Yoong Chai) 한국전자통신학회 2016 한국전자통신학회 논문지 Vol.11 No.7
As this paper is related to the relay and its driving control method, it explains about the relay which connects or interrupts the DC high voltage battery s power to drive the electric car s inverter. The paper suggests a sub-relay which prevents strong sparks from relay s contact point when the relay connects to the DC high voltage battery and also compensates for the increasing internal resistance value that is caused by deterioration at contact point. The relay s rated power is approximately 10KW and the relay s electric property has been verified through electrical instantaneous power short test, etc. 본 논문은 릴레이 장치 및 구동 제어 방법에 관한 것으로서, DC 고전압 배터리의 전력을 전기자동차의 인버터를 구동하기 위해 전력을 접속하거나 차단하는 릴레이에 관한 것이다. 본 논문을 통해 DC 고전압 배터리에서 릴레이가 접속되는 순간 릴레이의 접점에서 강한 스파크가 발생하는 것을 방지하고 접점의 열화 및 노후로 인해 증가하는 릴레이 내부 저항값을 보상하기 위한 서브릴레이가 제안되었다. 제작된 릴레이의 정격전력은 10KW 정도이며 전기적 순단시험 등을 통해 릴레이의 전기적 특성을 검증하였다.