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김범식(Bumsik Kim),장지훈(Jihoon Jang),정진환(Jinhwan Jung),이기상(Kisang Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Permanent-magnet Synchronous Motors (PMSMs) are suitable for the Hybrid Electric Vehicle (HEV) due to their high efficiency and torque/power density. Since the torque of a PMSM is determined by the stator currents, stator current control is essential in the torque control. Also, available torque of a PMSM is dependent on the dc-link voltage of the inverter and motor speed. This paper investigates the current reference generation methods and proposes a new current reference generation method based on the two-dimensional tables. The proposed method has simple structure and reflects the motor speed as well as the dc-link voltage variation.
PI(Power Integrity)해석을 통한 HPCU (Hybrid Power Control Unit) 전자파 성능 향상
김성규(Sungkyu Kim),정태환(Taehwan Chung),정진환(Jinhwan Jung),이기상(Kisang Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Power Integrity(PI) means a quality of the power and ground planes in an electric circuit board. This is closely bound up with the EMC performance of the circuit board. The electric potential actually fluctuates because of the influx of return-current circulating in the power and ground planes, which causes abnormal signals or EMC problems. This paper suggests a practical PI simulation method for analyzing EMC performance in design stage. With using this method, a proper countermeasure for any EMC problem can be taken before manufacturing an electric circuit board
환경차 PE 부품 고장 검출 신뢰성 확보를 위한 HFM 로직개발
이재원(Jaewon Lee),정태환(Taehwan Jung),이영국(Youngkook Lee),정진환(Jinhwan Jung) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Electric driven cars are composed of electric converters (inverter, DCDC convert,), which converts high voltage and current. Distinct from conventional ECU, high voltage system and low voltage system exist in the converters. High voltage and current generates high electric and magnetic noise and require shorter response time than conventional ECU’s. As failsafe requirements for vehicle is getting higher, building reliable fault detection system becomes more important. Due to these two requirements, converters need to have a protection system with high reliability and immediacy compared to conventional ECUs. This paper investigates conventional method to detect fault signal, which was used for an internal combustion vehicle and propose a new method to have a reliability and immediacy for electric driven cars. This proposed method achieves a protection system with high reliability and immediacy using CPLD device.
하이브리드 전기자동차(HEV)의 12V 보조배터리 충전용 DC-DC 컨버터의 최적설계
조진상(Jinsang Jo),최세완(Sewan Choi),송홍석(Hongseok Song),정진환(Jinhwan Jung),김호기(Hogi Kim) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
본 논문은 하이브리드 전기자동차의 12V보조배 터리 충전용 DC-DC 컨버터의 최적설계에 관한 것으로 하이브리드 전기자동차의 특성상 DC-DC 컨버터는 최대부하의 30%~70% 정도의 비교적 낮은 부하영역에서 주로 동작하므로 이에 따른 적절한 설계가 요구된다. 따라서 DC-DC 컨버터의 주 동작영역에서 효율이 높도록 주요 설계요소인 스위칭 주파수와 고주파 변압기의 누설인덕턴스를 적절히 선정하고 코아의 윈도우 면적을 최소화하는 최적설계에 관한 연구이다.
배터리 전압변동을 고려한 HEV용 모터시스템 효율 향상기법
김범식(Bumsik Kim),곽무신(Mushin Kwak),이영국(Youngkook Lee),정진환(Jinhwan Jung),이기상(Kisang Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Permanent-magnet Synchronous Motors (PMSMs) are suitable for the Hybrid Electric Vehicle (HEV) due to their high efficiency and torque/power density. Since the torque of a PMSM is determined by the stator currents, stator current control is essential in the torque control. Also, available torque of a PMSM is dependent on motor speed and battery voltage (dc-link voltage of the inverter). In this paper, a new current reference generation method is proposed, which can increase the system efficiency with high control accuracy even when the battery voltage varies. The performance of the proposed method is verified with experimental results.