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서보모터 타입 모터다이나모를 이용한 전기이륜차 주행성능 평가를 위한 동적 시뮬레이터 개발
강대경(Daekyung Kang),서상근(Sanggeun Seo),최완규(Wankyou Choi),김홍진(Hongjin Kim),김민수(Minsoo Kim) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
We have developed the dynamic simulator to evaluate the drive performance of the electric two-wheelers through the HIL(Hardware in the loop) test on the motor dynamometer with the servo motor. In the HIL test, the servo motor of the dynamometer applies the road load to the motor under test according to the speed and the acceleration of the motor. To check the availability of the developed simulator, we have compared the results of the simulation on the dynamometer with the field tests. In field test, we rode the e-bike with BLDC motor and Li-ion battery and performed the coastdown test in order to find the correlation of the road load and e-bike’s speed. And we carried out the test for the acceleration performance. After the field test, we assigned the correlation of the road load-speed to the dynamic simulator and simulated the e-bike’s drive about the coastdown and the acceleration performance from the standstill. From the comparisons, we concluded our developed simulator was very available for the drive simulation of the e-bike’s drive on the real road.
HILS를 통한 공력저항과 중량 변화에 따른 전기이륜차 연비 변화에 대한 연구
강대경(Daekyung Kang),위성우(Sungwoo Wi),장세훈(Sehun Chang),허중식(Joongsik Heo),이명아(Myeonga Lee) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
Hardware-in-the-loop simulation(HILS) was conducted on motor dynamometer to analyze the effect of the weight of the vehicle and the aerodynamic resistance coefficient against the fuel efficiency of the electric two-wheelers. Road load model derived from the coast-down was set into the control model of the motor dynamometer. As the coefficients for the rolling resistance and the aerodynamic resistance corresponding to the rolling resistance and the aerodynamic resistance, respectively, were varied like Cd, 2Cd, 3Cd, 4Cd and from 70 % to 130 % of the total weight, the test motor powered by the real battery was operated on the arbitrary driving mode. Evaluating the fuel efficiency of the electric two-wheeler using the real one on road inevitably needs considerable times to test. But in this study, the fuel efficiency evaluation using HILS on motor dynamometer needed just about 3 hours including the all cases about the variation of the weight and the aerodynamic coefficient.
모터다이나모를 이용한 전기자전거 주행성능 평가에 관한 연구
강대경(Daekyung Kang),고승현(Seunghyun Ko),김정훈(Jeunghoon Kim),서상근(Sangguen Seo),이상배(Sangbae Lee),김민수(Minsoo Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
We have studied about drive performance of E-bike such as energy consumption efficiency and maximum speed. These measurements have been performed by testing the drive motor on motor dynamometer. Road load occurred during drive are applied to drive motor as braking force of powder brake in motor dynamometer. Through experimental results, we have found that energy consumption and maximum speed of E-bike is about 0.15 km/Wh, 23.0 km/h, respectively. We expect that this test method for electric vehicle including E-bike will be necessary to test and evaluate performance and reliability of vehicles in case of severe and time-continuous environments.