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- 저자 : 최덕관(Deok-Kwan Choi) (검색결과 4 건)
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최덕관(Deok kwan Choi),김종철(Jong cheol Kim),김호식(Ho sik Kim),오세민(Se min Oh),김승기(Seung gi Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
24V DC power system of commercial vehicle includes 28V alternator and 24V battery bank (two 12V battery bank in series). BEQ(Battery Equalizer) provides efficient and reliable 12V DC power to 12V electrical load in 24V DC power system. In addition to providing 12V DC power, BEQ ensures that battery voltages remain equal which extends battery life. It is the most cost effective and efficient solution for dual voltage systems. BEQ made by Hyundai MOBIS is specifically designed to provide reliable 12V DC power for 12V ABS(Anti-lock Brake system). This paper explains principles, design, simulations, manufacture and a test of BEQ.
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최덕관(Deok-kwan Choi),김종철(Jong-cheol),김호식(Ho-sik Kim),박재규(Jae-kyu Park) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
24V DC power system of commercial vehicle includes 28V alternator and 24V battery bank (two 12V battery bank in series). BEQ(Battery Equalizer) provides efficient and reliable 12V DC power to 12V electrical load in 24V DC power system. In addition to providing 12V DC power, BEQ ensures that battery voltages remain equal which extends battery life. It is the most cost effective and efficient solution for dual voltage systems. BEQ made by Hyundai MOBIS is specifically designed to provide reliable 12V DC power for 12V ABS(Anti-lock Brake system).
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하이브리드 자동차 보조전원 공급용 DC-DC 컨버터 개발
김종철(Jong-Cheol Kim),최덕관(Deok-Kwan Choi),박해우(Hae-Woo Park) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
본 논문에서는 하이브리드 자동차용 보조전원 공급이 목적인 DC-DC Converter에 대하여 기술하였다. DC-DC Converter는 차량 내의 헤드램프, 오디오, 각종 ECU등 전기/전자 부하에 전력을 공급하며 또한 12V 보조 배터리를 충전하는데 사용된다. 고주파 동작 조건하에서 유기되는 전자파 노이즈와 스위칭 손실을 저감하기 위하여 컨버터 토폴로지로 위상천이 영전압 풀브리지 방식을 적용하였으며 제어기의 용이한 보상 및 안정된 시스템 응답 특성을 위하여 슬로프 보상이 포함된 전류 모드 제어방식을 사용하였다. 정전압/정전류 충전 제어 방식은 전기부하에 안정적인 전원공급과 보조 배터리의 안정적인 충전을 보장한다. 초기의 회로 파라메타 설정 및 하드웨어 디버깅을 위하여 시뮬레이션 툴로 PSIM 6.0을 사용하였으며. DC-DC Converter에서 스위칭 소자의 발열 문제는 Thermo Tracer 장비를 사용하여 개선하였다. This paper describes the DC-DC Converter for Ancillary Power Supply in Hybrid Electric Vehicle. DC-DC Converter is used for charging 12V auxiliary battery supplying electric power to head ramp, audio, ECU etc in automobiles. used DC-DC Converter Topology is PS-ZVS FB(Phase Shifted Zero Voltage Switching Full-Bridge) to reduce switching loss and EMI noise induced by high frequency operating condition. And For easy compensation and stable system response characteristic, current mode control method including slope compensation is employed. Constant current / constant voltage charging control method guarantee stable electric charging of auxiliary battery. Simulation tool PSIM6.0 is used for initial circuit parameter settings and H/W debuging. Thermal problems of Switching components in DC-DC Converter is improved by using Thermo Tracer.
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48V Mild HEV용 양뱡향 DC-DC 컨버터 설계
황수빈(Soo-bin Hwang),전수민(Soo-min Jeon),이아라(A-ra Lee),방효진(Hyo-jin Bang),최덕관(Deok-kwan Choi),김종철(Jong-cheol Kim) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
48V Mild HEV consists of ISG(Integrated Starter & Generator), 48V Li-ion battery, 48V-12V bi-directional DC-DC Converter. This improve the vehicle’s fuel economy and reduce CO₂ emission by Stop/Start, Torque assist engine and regenerative brake. In the buck mode, the DC-DC converter supplies an electric power to 12V electrical load in the vehicle and charges the 12V battery. In the boost mode, it charge the 48V DC-link before 48V battery is connected, this can prevent the in-rush current from battery to DC-link. To optimize the size related with the number of phase in converter, the thermal analysis is necessary which consists with MOSFET power loss and thermal resistance. It is possible to approach the fast response and reduce the number of components by the bi-directional and multi-phase PWM IC. This also can reduce the size by replacing the electrolytic capacitor to MLCC(Multi-Layer Ceramic Capacitor). When the boost converter output is shorted because of any problems in 48V node, the bulk current flows from 12V battery to 48V node through the output diode. To protect this trouble in vehicle system, 48V node back to back protection switch is required. Those proposed design methods are verified through the calculation and the experiments.
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