• 한국자동차공학회논문집
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• 제20권2호
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• pp.56-63
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• 2012

Environment has become a main issue nowadays. People began to show big interest in "futuristic means of transportation", which is an efficient method in $CO_2$ emissions reduction and decreasing use of oil. Due to the noise and emissions of two-wheel vehicle of internal combustion engine, electric two-wheeled vehicles have been supplied in downtown. The electric two-wheeled vehicles use battery as power source. The performance of lithium-ion battery changes as the ambient temperature changes. In this paper, analysis of performance variance of electric two-wheeled vehicles influenced by the temperature using the chassis dynamometer and the environmental chamber was carried out.

• 전력전자학회지
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• 제16권4호
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• pp.42-45
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• 2011

• 한국자동차공학회논문집
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• 제21권3호
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• pp.58-65
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• 2013

In this paper, we propose that a model based design for an electric motor cycle system using ASM (Automotive Simulation Models). Before prototyping a realistic electric motorcycle, a reliable simulation program is required to test the capacities of the power sources and optimize the parameters of an electric motorcycle. Because ASM is based on Simulink, we can design the drivetrain and powertrain of the vehicle model systems easily. To verify the electric motorcycle system analysis of design parameters such as max power, capacity, state of charge and slope angle is carried out by the simulation and experimental method. The predicted results by the development model were in good agreement with the experimentally obtained results. Therefore, the proposed electric motorcycle model can effectively reduce the expenses during the designing of an electric motorcycle system.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2011년도 추계학술대회
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• pp.10-11
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• 2011

단일 회전자 전동기와 달리 동일한 크기에서 높은 출력 밀도와 높은 토크의 장점이 있는 이중 회전자 구조를 갖는 전동기는 공간적 제약을 받는 전기 자동차, 전기 이륜차 등의 분야에 활발히 연구되고 있다. 이중 회전자 구조를 갖는 전동기는 고 토크 운전을 위해 이중 인버터 운전 방식이 요구된다. 이때, 내부와 외부전동기의 역기전력이 다를 때 이를 고려하지 않고 운전한다면 발생하는 동손이 증가하여 운전효율 저하로 이어진다. 본 논문에서는 이중 회전자 구조를 갖는 3상 BLDC 전동기에서 내부와 외부전동기의 역기전력비(${\alpha}$)와 고정자 저항 비(${\beta}$)를 고려한 전류분배방식을 통해 동손을 최소화하는 최적운전 알고리즘을 제안하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2017년도 춘계학술발표대회
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• pp.1195-1197
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• 2017

본 논문은 퍼스널 모빌리티의 주요기술이라 할 수 있는 IoT 기반의 NEV 제어 시스템을 소개한다. 제안하는 시스템의 분석을 위해 논문 본론에서는 NEV 통합 관리 시스템의 전체 구성도를 시작으로 설계한 시스템소프트웨어, 사용자 어플리케이션 및 사용자 응용 어플리케이션에 대해 기술하였다. 본 시스템 적용을 통해 실시간으로 전기이륜차의 상태정보를 제공할 수 있으며 네비게이션, 블랙박스와 같은 기능을 통해 사용자의 편의성을 증대시킬 수 있다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2011년도 전력전자학술대회
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• pp.107-108
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• 2011

This paper developed 110cc class electric motorcycle using IPMSM. First, Tractive effort calculated by considering the driving environment of motorcycle. And accordingly the motor and inverter were designed and manufactured. It was mounted on motorcycles and test result was compared with the output power of motorcycle with an internal combustion engine.

• 전기학회논문지
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• 제65권1호
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• pp.165-170
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• 2016

Recently, IoT(Internet of Things) technology is widely applied in not only our everyday lives but also in industry, medical field and security system. NFC system, the basis of IoT, is in the spotlight which can be an alternative solution of a anti-theft system for motorcycle as they basically have practicality and security issues. Anti-theft system for motorcycle using the NFC smart devices based on RFID has been proposed. because Progress of Smart Device If someone get the Key for motorcycle theft, he can be easily stolen motorcycle. We thought about the concept of NFC security devices as a wireless key and automatic solenoid valve for setting the lock and unlock module. In this study, we designed motorcycle smart key system with general-purpose NFC system and the automatic solenoid valve for setting the lock and unlock module. First, we designed control unit and NFC card reader for motorcycle smart key system. Then we propose an AES encryption algorithm and prove that the motorcycle key system is controllable by showing the result of implementing and testing, after installing.

• 자원ㆍ환경경제연구
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• 제29권4호
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• pp.443-468
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• 2020

전기차 관련 기술 발달과 보급 확대로 화물, 이륜차 등 일반승용 부문을 넘어 육상수송 전반에 걸친 연료전환 효과가 발생하고 있다. 본 연구는 대도시에서 긴 주행거리를 운행하는 사업용 승용차(택시)의 연료전환에 따라 발생하는 대기환경편익을 택시의 운행특성과 충전전력의 발전원별 비중을 동시에 반영하여 추정하였다. 분석 결과 LPG를 연료로 하는 택시의 연료 전환 효과는 제8차 전력수급기본계획을 기초로 한 발전원별 비중을 고려했을 때 약 21.5원/km로 분석되었으며, 택시 한 대가 출고되어 폐차될 때까지의 전체 운행거리를 기준으로 할 때 약 860만 원 수준으로 추정되었다. 이러한 연구 결과는 최근 국내외에서 활발히 추진되고 있는 재생에너지발전 및 전기자동차 보급 확대 정책의 필요성 및 당위성을 보여준다.

• 한국자동차공학회논문집
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• 제24권6호
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• pp.635-641
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• 2016

Regenerative braking performance of an electrically powered vehicle is closely related to driving distance per battery charge. An electric vehicle uses appropriate amounts of mechanical braking force and electromagnetic regenerative braking force to recover energy and increase driving efficiency. In particular, when it drives on a downhill road, energy recovery rate is maximized through regenerative braking during coasting based on the mass inertia of the vehicle. Since an electric two-wheeled vehicle covered in this paper is lighter than an electric four-wheeled vehicle, the improvement of its driving distance per battery charge through regenerative braking is different from an electric four-wheeled vehicle. This study compared the driving characteristics of an electric two-wheeled vehicle based on regenerative braking. Two driving test modes were simulated with a chassis dynamometer system. By analyzing the measurement of a chassis dynamometer, the driving characteristics of a two-wheel electric vehicle, such as driving efficiency, were analyzed. In addition, test results were reviewed to draw the limitations of conventional test methods for regenerative braking performance of an electric two-wheel vehicle.