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회생제동 전자제어 유압모듈을 이용한 하이브리드 차량의 에너지 회수 알고리즘 개발
여훈(H. Yeo),김현수(H. S. Kim),황성호(S. H. Hwang) 유공압건설기계학회 2008 드라이브·컨트롤 Vol.5 No.4
In this paper, an energy regeneration algorithm is proposed to make the maximum use of the regenerative braking energy for a parallel hybrid electric vehicle(HEV) equipped with a continuous variable transmission(CVT). The regenerative algorithm is developed by considering the battery state of charge(SOC), vehicle velocity and motor capacity. The hydraulic module consists of a reducing valve and a power unit to supply the front wheel brake pressure according to the control algorithm. In order to evaluate the performance of the regenerative braking algorithm and the hydraulic module, a hardware-in-the-loop simulation (HILS) is performed. In the HILS system, the brake system consists of four wheel brakes and the hydraulic module. Dynamic characteristics of the HEY are simulated using an HEY simulator. In the HEY simulator, each element of the HEY powertrain such as internal combustion engine, motor, battery and CVT is modelled using MATLAB/Simulink<SUP>®</SUP>. In the HILS, a driver operates the brake pedal with Ius or her foot while the vehicle speed is displayed on the monitor in real time. It is found from the HILS that the regenerative braking algorithm and the hydraulic module suggested in this paper provide a satisfactory braking performance in tracking the driving schedule and maintaining the battery state of charge.
유성기어 장착 하이브리드 자동차의 회생제동 제어로직 개발
안정근(J.G. Ahn),김동현(D.H. Kim),여훈(H. Yeo),정기화(G.H. Jung),김수병(S.B. Kim),김현수(H.S. Kim),황성호(S.H. Hwang) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_2
In this paper, a regenerative braking algorithm is proposed to make the maximum use of the regenerative braking energy for an independent front and rear motor drive parallel HEV. In the regenerative braking algorithm, the regenerative torque is determined by considering the motor capacity, motor efficiency and vehicle velocity. To implement the regenerative braking control algorithm, HEV powertrain models including the internal combustion engine, electric motor, battery, manual transmission and the regenerative braking system are developed using MATLAR and the regenerative braking performance is investigated by the simulator. Simulation results show that the proposed regenerative braking control algorithm contributes to increasing the battery SOC, which recuperates 45 percent of the total braking energy while satisfying the design specification of the control logic. In addition, a control algorithm which limits the regenerative braking is suggested by considering the battery SOC.
김동현(Donghyeon Kim),오경철(Kyouncheol 0h),여훈(Hoon Yeo),김현수(Hyunsoo Kim) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_3
In this paper, motor sizing and operation algorithm are investigated for a 4 wheel drive (4WD) parallel hybrid electric vehicle (HEV). Firstly, motor sizing is investigated from a viewpoint of utilizing the regenerative braking energy. For a given vehicle weight, the mean and variance of the regenerative power are obtained for federal urban driving schedule(FUDS). Based on the mean and variance of the regenerative power, motor size is selected. In addition, the motor capacity that is required to propel the vehicle from standstill to 30KPH only by the electric energy is obtained for FUDS. Considering the regenerative power in the braking and the motor power in the acceleration, the motor size can be determined. Once the motor capacity is decided, the front and the rear motor size are selected based on the distribution of the traction force and recuperation of the braking energy. In order to evaluate the performance of the 4WD HEV, powertrain models of the HEV such as IC engine, motor, battery, CVT are developed using MATLAB SIMULINK. Using the HEV simulator, performance of the 4WD HEV is evaluated. It is expected that the HEV simulator developed in this study can be used in the initial design of the 4WD HEV such as motor sizing and estimation of the design parameters.