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한규홍(Kyuhong Han),이태경(Taekyung Lee),정창모(Changmo Jung) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This paper describe development process and results of a battery emulation system using power conversion unit. The battery emulation system can be a substitute for a real battery system in the test environment which is hard to use a real battery system. For developing this battery emulation system, a HIL(Hardware-In-the-Loop) simulator which has a realtime battery system model and a power conversion unit which supply real electric power are connected. The test result for comparison between the real battery system result and the battery emulation system result has similar tendency and values. It is possible to emulate battery characteristics if this battery emulation system is used in the developing process for electric propulsion systems.
고장 모사 기능을 포함한 군용 하이브리드 전기 자동차용 배터리 시스템 모델링
한규홍(Kyuhong Han),이윤복(Yoonbok Lee) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This paper describes the development process and results of a battery system model for military hybrid electric vehicles with fault simulation. The battery system model can be used to verify control and fault diagnosis strategies of a supervisory controller in the hybrid electric vehicle. To develop this battery system model, three sub-models, including a battery model, a relay assembly model, and a BMS(Battery Management System) model, are connected together similarly to real battery systems. The comparison result between the real battery system and the battery system model shows similar tendency and similar values. And fault injection test shows real system situation. It is possible to emulate battery characteristics and fault situation if this battery system model is used in the development process of the supervisory control strategies for hybrid or electric propulsion systems.
한규홍(Kyuhong Han),김지환(Jihwan Kim),김현섭(Hyunsup Kim),박태호(Taeho Park),김지훈(Jihun Kim),홍정호(Jeongho Hong),이형철(Hyeongcheol Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This paper presents the fault detection and isolation (FDI) strategy for a parallel hybrid electric vehicle (HEV). The powertrain of the target parallel HEV consists of an internal combustion engine, an integrated starter and generator (ISG), a traction motor, an ISG belt as a pulley system and an engine clutch between the engine and the traction motor. In this study, the model-based FDI algorithm for the current and the angle sensors in the ISG and the traction motor is developed. In the supervisory controller, another FDI algorithm is also developed through structural analysis of the ISG belt and the engine clutch. This FDI algorithm utilizes a powertrain model composed of five sub-models: the ISG, the ISG belt, the engine, the engine clutch and the traction motor. For the fault detection, analysis of the signal fluctuation during the faulty situation is performed for different scenarios. For getting the computer simulation results of the developed FDI strategy, the powertrain model and the controller of the target parallel HEV are developed to simulate the proposed FDI strategy. Validity and effectiveness of the proposed FDI strategy is shown by the simulation results.
6륜 전기구동 차량의 구성품 최소 용량 선정과 주행 성능 분석
한규홍(Kyuhong Han),여승태(Seungtai Yeo) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
Based on critical factors related to requirements, a reasonable design procedure is proposed to determine the minimum power capability of the components of a hybrid electric driving vehicle such as a battery, an electric motor, and an engine/generator. In this study, the procedure to satisfy the essential target driving performance is adapted for a six-wheeled hybrid electric driving vehicle of military application. And with a longitudinal vehicle dynamics, vehicle performance is analyzed to judge whether the target vehicle composed of the components of the selected size satisfies the target driving performance.
최현석(Hyunseok Choi),한규홍(Kyuhong Han),유진호(Jinho Yu),장교근(Kyogun Chang),이윤복(Yoonbok Lee) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Regenerative brake system in currently developing lightweight tactical HEV cant absorb maximum regenerative power because of braking feeling. In this study, we didnt activate frictional brake until regenerative brake absorbs maximum torque by making additional devices and setting them to the vehicle. And we performed the fuel economy test on the vehicle 4X4 TM dynamometer. The result shows that 53% energy absorption increase in brake-stop test, 8.7% fuel economy increase in FTP-72 mode and 10.8% increase in South Korean forward area driving mode.
안국진(Kookjin Ann),민형기(Hyeong Ki Min),한규홍(Kyuhong Han) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
This paper presents a modeling and performance analysis for braking system of 6 wheel vehicle. The braking system of 6 wheel vehicle is consisted of hydraulic brake and electronic parking brake. The electronic parking brake can be used when the hydraulic brake system is failed. To predict the braking performance, the vehicle and braking system was modeled via TruckSim/Matlab software. Based on the vehicle model, braking simulation is conducted in various scenarios. The performance of the braking system was analyzed by the simulation using the implemented vehicle model.
직렬형 하이브리드 차량의 장거리 주행 연비 향상을 위한 순항 파워제어 알고리즘 및 실차 검증
정순규(Soonkyu Jeong),이상욱(Sangwook Lee),한규홍(Kyuhong Han),이윤복(Yoonbok Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Research on the series hybrid electric propulsion system in the field of military vehicles has been carried out because it has advantages such as high electric power exportability to mission equipment, low noise driving capability, as well as fuel economy. The series hybrid electric vehicles can increase fuel economy by operating engine/generator at its optimal operating point but it can cause excessive charge and discharge current to/from the high voltage battery and then heat problem, efficiency decrease, and life reduction. To solve this problems, by operating engine/generator at its optimal operating point at low vehicle speed, and by controlling engine/generator power to the sum of the driver"s power request and the vehicle"s board net power consumption, current to/from battery could be reduced and the vehicle"s efficiency increased. This paper provides the cruising power control algorithm and its real-vehicle test results which minimizes charge and discharge battery current at high vehicle speed and then reduces heat problems and increases efficiency.