• 제목/요약/키워드: Electric vehicle

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전기자동차의 주행성능 프로그램 개발 (Development of an Electric Vehicle Simulation Program)

  • 권오건;구정서;최진민
    • 연구논문집
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    • 통권22호
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    • pp.55-64
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    • 1992
  • A simulation program is developed to analyse the driving performance of an electric vehicle. It is composed of the structured modules modelled after the functional components of the electric vehicle. This program can be used conveniently in the conceptual design stage of a new electric vehicle. The comparision of the test data of ETX-1 developed by Ford with the calculated results shows reasonable agreement within 15% error.

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전기차 기반의 1톤급 상용차용 통합공조 시스템에 관한 연구 (A Study on Integrated Air-conditioning System for Electric Vehicle Based 1-ton Class Commercial Vehicle)

  • 백수황;김철수
    • 한국전자통신학회논문지
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    • 제14권2호
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    • pp.361-368
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    • 2019
  • 본 논문은 전기차 기반의 1톤급 상용차용 통합공조 시스템에 관한 연구이다. 전기 상용차의 경우 화물의 승하차를 위해 문의 개폐가 빈번하게 이루어지기 때문에 열손실이 크게 발생한다. 따라서 냉난방 부하가 승용 전기차에 비해 더 크게 요구된다. 결과적으로 승객이 요구하는 열 쾌적성을 만족하기 위해서 냉난방 시스템이 소비하는 에너지가 승용 전기차 보다 크다. 이러한 단점을 극복하기 위해 효율적인 통합공조 시스템을 적용한 연구를 수행했다. 최종적으로 1톤급의 경상용 전기트럭의 상품성 개선과 전기트럭 분야의 산업 생태계 기반 확충을 위한 고효율 공조 시스템 개발을 위해 냉방을 위한 전동식 압축기와 난방을 위한 히트펌프 시스템의 구상 설계와 해석적 검증을 수행한다.

전기차 이용자의 일단위 및 주단위 충전 프로파일 유형화 분석 : 순차패턴분석과 잠재계층분석을 중심으로 (Identifying Daily and Weekly Charging Profiles of Electric Vehicle Users in Korea : An Application of Sequence Analysis and Latent Class Cluster Analysis)

  • 이재현;윤서연
    • 한국ITS학회 논문지
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    • 제21권6호
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    • pp.194-210
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    • 2022
  • 최근 정부가 지향하고 있는 이용자 중심의 충전인프라 구축방향은 실제 전기차 이용자들의 편의를 높이며, 새로운 전기차 이용자를 시장으로 유입할 수 있는 중요한 정책이다. 본 연구는 이러한 정책의 수립에 기초자료로 활용될 수 있는 실제 전기차 이용자들의 충전행태에 대한 깊이 있는 이해를 제공하는 것을 목적으로 수행되었다. 일주일 동안 수집된 충전일지 자료에 기반하여 전기차 이용자들의 충전행태를 일단위 및 주단위로 분석하였으며, 순차패턴 분석과 잠재계층 분석을 활용하였다. 그 결과, 5가지 일단위 충전 프로파일과 4가지 주단위 충전 프로파일을 도출하였으며, 이는 향후 이용자 중심 충전인프라 정책 수립뿐만 아니라 잠재 전기차 이용자들의 의사결정에 핵심적인 정보를 제공하여 전기차 시장을 활성화하는데도 기여할 것으로 판단된다.

고전원 전기장치 기반 전기자동차 교육 체계 구축과 자격 부여의 제고 방안 연구 (A Study on the Establishment of an Electric Vehicle Education System based on High-power Electric Devices and Improvement of Qualifications)

  • 손병래;박창신;류기현
    • 자동차안전학회지
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    • 제15권4호
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    • pp.32-38
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    • 2023
  • With the transition from internal combustion engine vehicles to eco-friendly cars, it has become essential to systematically construct an education system for electric vehicles based on high-voltage electric devices. In this study, we discussed the establishment of an educational system for electric vehicles based on high-voltage electric devices and proposed methods for qualifications after completing the education. To ensure systematic education, we presented a classification of learners according to their levels and job competencies. Additionally, we emphasized the importance of providing adequate practical training equipment for courses that require higher qualifications. Finally, to distinguish between the levels of completion of training and practical skills, we highlighted the necessity of implementing a system to certificates to individuals who have successfully completed the systematic training program.

전기차와 전력계통의 정보교환을 위한 전기차 충전장치의 통신 제어기에 대한 연구 (A Study on Communication Controller of Electric Vehicle Supply Equipment for Information Exchange between Electric Vehicle and Power Grid)

  • 한아;신민호;김인택;장혁수
    • 전기학회논문지
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    • 제63권11호
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    • pp.1564-1570
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    • 2014
  • An electric vehicle (EV) not only receives electric power from the electric vehicle supply equipment (EVSE), but it also exchanges the information regarding charging process with the power gird through the EVSE. However, the EV and EVSE communicate using the ISO/IEC 15118 standard while the EVSE and power grid communicate using the IEC 61850 standard. Therefore, the EVSE should support both the ISO/IEC 15118 and IEC 61850 standards, and provide a data mapping function between the two communication protocols so that the EV and power grid, which support different protocols, can communicate with each other throughout the charging process. In this paper, we propose a mapping method of the EVSE, which converts the ISO/IEC 15118 data to IEC 61850 and vice versa, based on the XML schema of each protocol. The proposed method converts the data using the XSL (eXtensible Stylesheet Language) method, which defines the data mapping between two XML schemas. Our approach is more flexible and easier to maintain against changes in charging scenarios and the standards than other existing approaches such as one-to-one data mapping methods.

전기 자동차 무선 충전 시스템 기술 동향 및 분석 (A Technology Trend and Analysis of Electric Vehicle Wireless Charging System)

  • 임종균;이동용
    • 한국전자통신학회논문지
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    • 제16권2호
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    • pp.255-260
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    • 2021
  • 최근 화석연료의 고갈로 인해 전기 자동차의 중요성이 점차 커지고 있다. 전기 자동차를 사용하기 위해서는 자동차에 내장된 배터리를 수시로 충전해야 한다. 전기 자동차는 소음, 진동에 있어 매우 뛰어난 성능을 구현한다. 하지만 배터리의 한계상 1회 충전 시 주행거리가 내연 자동차보다 상당이 짧으며, 배터리 충전 시간도 주유 시간에 비해 상대적으로 매우 오래 걸린다는 단점이 있다. 전기 자동차용 배터리를 충전하는 방식은 플러그인 방식과 무선 충전 방식이 있다. 본 논문에서는 전기 자동차용 무선 충전 기술에 대한 소개와 주요 국가의 기술 개발 현황 및 표준을 소개하였다.

정보보호를 고려한 전기자동차 충방전 시스템의 인증과 운영에 관한 연구 (Secured Authentication Scheme and Charging & Discharging System Operation for Electric Vehicles)

  • 이성욱
    • 문화기술의 융합
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    • 제7권1호
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    • pp.551-557
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    • 2021
  • 전기자동차의 증가에 따라 공공장소의 전기자동차 충방전 기반시설 또한 급격히 늘어나고 있다. 전기자동차의 충방전을 위해서는 보안상의 취약점을 최소화하기 위해 전기자동차와 서비스 제공자가 서로의 신원을 확인하는 상호인증과정 후에 층방전 서비스를 시작하여야 한다. 본고에서는 해쉬함수와 메시지 인증코드를 사용하여 전기자동차와 충방전 서비스 제공자간의 양방향 인증 방법을 제안한다. 그리고 효율적인 충방전 시스템의 운영에 대해 기술한다. 제안된 시스템은 외부로 부터의 공격에 강한 내성을 가지며 충방전 서비스 이용자의 개인정보를 효과적으로 보호할 수 있다.

소형 전기자동차 CAN 데이터 기반의 시뮬레이션 모델 개발 (Development of a Simulation Model based on CAN Data for Small Electric Vehicle)

  • 이홍진;차준표
    • 한국분무공학회지
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    • 제27권3호
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    • pp.155-160
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    • 2022
  • Recently, major developed countries have strengthened automobile fuel efficiency regulations and carbon dioxide emission allowance standards to curb climate change caused by global warming worldwide. Accordingly, research and manufacturing on electric vehicles that do not emit pollutants during actual driving on the road are being conducted. Several automobile companies are producing and testing electric vehicles to commercialize them, but it takes a lot of manpower and time to test and evaluate mass-produced electric vehicles with driving mileage of more than 300km on a per-charge. Therefore, in order to reduce this, a simulation model was developed in this study. This study used vehicle information and MCT speed profile of small electric vehicle as basic data. It was developed by applying Simulink, which models the system in a block diagram method using MATLAB software. Based on the vehicle dynamics, the simulation model consisted of major components of electric vehicles such as motor, battery, wheel/tire, brake, and acceleration. Through the development model, the amount of change in battery SOC and the mileage during driving were calculated. For verification, battery SOC data and vehicle speed data were compared and analyzed using CAN communication during the chassis dynamometer test. In addition, the reliability of the simulation model was confirmed through an analysis of the correlation between the result data and the data acquired through CAN communication.

Proposal and Manufacturing of Prototype of the CVT Model using Spring

  • Kwon, Young Woong;Park, Sung Cheon
    • International journal of advanced smart convergence
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    • 제10권4호
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    • pp.256-262
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    • 2021
  • In order for small electric vehicles to drive on hilly roads in Korea, methods to improve the climbing ability and power performance of vehicles should be taken. In order to improve the power performance of small electric vehicles, the performance of motors mounted on electric vehicles should be improved. However, if the performance of the motor is improved to improve the power performance of the electric vehicle, it is possible to lower the price competitiveness accordingly. In addition, the power consumption of the battery is rapidly increased to drive the high-performance motor, so in order to introduce the small electric vehicle into the domestic market, various problems must be overcome. In order to commercialize small electric vehicles that do not emit harmful exhaust gases to the human body in the hilly domestic terrain, it is effective to introduce a separate continuously variable transmission system that can improve the climbing ability and power transmission ability. In this study, we propose a proprietary model of continuously variable transmissions that can be applied to small electric vehicles. The proposed continuously variable transmission is equipped with a spring in the driving pulley and the driven pulley, and has the advantage of performing a shift that increases torque in a situation where the vehicle needs to increase torque when driving on a hill. In addition, the basic design for commercialization of the proposed continuously variable transmission was carried out, and the prototype manufactured and attached to the body of a small electric vehicle.

A New Multimachine Robust Based Anti-skid Control System for High Performance Electric Vehicle

  • Hartani, Kada;Draou, Azeddine
    • Journal of Electrical Engineering and Technology
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    • 제9권1호
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    • pp.214-230
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    • 2014
  • This paper presents a high performance sensor less control four motorized wheels for electric vehicle. Firstly, we applied a sensor less master-slave DTC based control to both the two in wheel motors by using sliding mode observer for its quick response and its high reliability in electric vehicle application. Secondly, to overcome the possible loss of adherence of one of the four wheels which is likely to destabilize the vehicle a solution is proposed in this paper. Thirdly, a Fuzzy logic anti-skid control structure well adapted to the non-linear system is used to overcome the main problem of power train system in the wheel road adhesion characteristic. Various Simulation results have been include in this paper to show that the proposed control strategy can prevent vehicle sliding and show good vehicle stability on a curved path.