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C. MANSOUR,D. CLODIC 한국자동차공학회 2012 International journal of automotive technology Vol.13 No.1
The hybridization of the conventional thermal vehicles nowadays constitutes a paramount importance for car manufacturers, facing the challenge of minimizing the consumption of the road transport. Although hybrid power train technologies did not converge towards a single solution, series/parallel power trains with power-split electromechanical transmissions prove to be the most promising hybrid technology. In fact, these power trains show maximum power train overall efficiency and maximum fuel reduction in almost all driving conditions compared to the conventional and other hybrid power trains. This paper addresses the model and design of the electro-mechanical configuration of one of the most effective HEV power trains: case study of the 2nd generation Prius. It presents the simulation work of the overall operation of the Toyota Hybrid System (THS-II) of the Prius, and explores not only its power-split eCVT innovative transmission system but also its overall supervision controller for energy management. The kinematic and dynamic behaviors of the THS-II power train are explained based on the power-split aspect of its transmission through a planetary gear train. Then, the possible regular driving functionalities that result from its eCVT operation and the energy flow within its power train are outlined. A feedforward dynamic model of the studied power train is next proposed, supervised by a rule-based engineering intuition controller. The energy consumption of the THS-II proposed model has been validated by comparing simulation results to published results on European, American and Japanese regulatory driving cycles.
울트라케페시터와 배터리를 보조 에너지원으로 사용하는 하이브리드 자동차의 다이나믹 프로그래밍을 이용한 최적 연비 계산
전유광(Jeon, You-Kwang),박영일(Park, Young-Il),이장무(Lee, Jang-Moo) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.11
A battery is the primary energy source device presently used in hybrid electric vehicle. It can store much energy, but cannot provide enough current without inefficient units. However, an ultracapcitor can provide much current, but cannot store much energy. It will have better fuel economy by combining the two energy sources in parallel. The purpose of this paper is making the simulator of the two HEV systems. The one has only battery, the other have battery and ultarcapacitor in parallel. To compare the fuel economy, dynamic programing was used for optimization and prius was used for HEV model.
하이브리드 전기자동차용 배터리 ECU 설계 및 잔존용량 알고리즘에 관한 연구
남종하,최진홍,김승종,황호석,김재웅 전력전자학회 2004 전력전자학회 논문지 Vol.9 No.4
The major factors that make ZEV affordable are the range and cost. The development of advanced batteries such as Ni-MH battery can solve the problem partly; on the hand the battery management system is an efficient way. Ni-MH battery and battery ECU is a key component influencing ZEV performance, such as range, acceleration and hill-climbing capability. Because most problems related to battery such as short circuit, over-discharge and overcharge occur easily during operation, it is necessary to develop a dedicated battery ECU for HEV. This paper proposes a new SOC algorithm for the HEV based on the terminal voltage and current integration. And battery ECU was designed and analyzed. Also, the validity is confirmed through experiment. 무공해 자동차를 만들기 위해 중요한 요소로서는 주행거리와 알맞은 가격이다. 니켈-수소 배터리와 같은 향상된 배터리의 개발은 부분적으로 문제를 해결할 수 있으며, 또 하나의 효과적인 방법은 배터리 관리 시스템이다. 니켈-수소 배터리와 배터리 ECU는 주행거리, 가속도, 등판능력과 같은 무공해 자동차의 성능에 영향을 미치는 중요한 구성품이다. 예컨대 운행 중 쉽게 발생하는 단락, 과방전, 과충전은 배터리와 관계되는 가장 큰 문제점이기 때문에 전용의 HEV용 배터리 ECU의 개발은 필수적이다. 본 논문에서는 배터리 전류적산 및 전압에 기초한 HEV용 SOC 알고리즘을 제안하고 배터리 ECU를 설계 및 해석하였으며, 시험을 통해 타당성을 검증하였다.
21세기 경쟁환경의 변화에 대한 도요타자동차의 대응에 관한 연구 -글로벌화에의 대응과 하이브리드자동차의 개발을 중심으로-
신장철 한일경상학회 2008 韓日經商論集 Vol.41 No.-
In this research, the discussion is about Toyota's active countermeasure toward the various change of international automobile industry as an example, centering around the surface of the global strategy promotion and the reinforcement of eco-friendly business strategy which this corporation has been taking. In other words, this research considers the propulsion background, contents and a result focusing on two points that are 1) reinforcement of globalization and localization following an increase of the direct overseas production, 2) a development as well as commercialization of eco-friendly cars among various competitive factors surrounding global automobile market which is more intensifying in the 21st century. Especially this research lays emphasis on Toyota's countermove of the environmental change as above, which is having a sudden transfiguration in recent year, not focusing on established investigation attitude that gives too much importance on management reformation related to Toyata's production system(TPS). Through the result of this research, we hope to explore ways toward the development of Korean automobile industry and a device for international competitiveness hereafter.
김정민(Jeongmin Kim),김현수(Hyunsoo Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A control algorithm for an input split type hybrid electric vehicle(HEV) is proposed. In order to develop the control algorithm for the best fuel economy, the input split type HEV is analyzed by using lever analysis. From the analysis results, it is found that the powertrain efficiency decreases in the speed ratios where the power circulation occurs, and it is required that the ICE needs to be operated on the speed ratio region where the powertrain efficiency is relatively high. Using the dynamic models of the HEV powertrain, a control algorithm to obtain the high system efficiency is designed by inversion-based control. In order to evaluate performance of the control algorithm, the simulation is carried out using PSAT. It is found from the simulation results that the algorithm proposed in this study provides improved fuel economy since the control is able to provide the ICE operation on the speed ratio range, which gives relatively high powertrain system efficiency.