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블로워 기능이 장착된 차량 청소기용 모터 드라이브 개발
이대진(DaeJin Lee),김재혁(Jaehyuck Kim),선한걸(Han-Geol Seon),주민기(Min-Gi Joo),이영수(Young-Soo Lee),한만승(Man-Seung Han) 대한전기학회 2017 대한전기학회 학술대회 논문집 Vol.2017 No.4
최근 다양한 레저 활동이 증가함에 따라 야외활동에서 활용도를 높일 수 있도록 기존의 흡입기능 외에 블로워 기능이 적용된 차량용 청소기에 대한 관심이 증대되고 있다. 기존 청소기에 주로 사용되는 DC모터와 비교하여 내구성 및 흡입력이 향상되고 흡입 및 배기가 모두 가능한 차량용 진공청소기에 적용하기 위하여 SRM을 설계, 제작하고 다양한 성능시험을 통하여 적용 가능성을 검토해 보았다.
CVVL BLDC 모터의 열피로 가속시험을 통한 수명보증시험 설계
이상훈(San-Hoon Lee),박상욱(Sang-Wook Park),김민근(Min-Geiun Kim),선한걸(Han-Geol Seon),홍성렬(Sung Ryeul Hong),한만승(Man-Seung Han) 한국신뢰성학회 2015 신뢰성응용연구 Vol.15 No.4
Purpose : The demand for higher fuel economy vehicles has helped develop fuel-efficient vehicles such as a CVVL called continuous variable valve lift. Existing CVVL has been applying DC type motor to control intake valve, but recently some car parts manufacturers have been developing a BLDC type CVVL motor for improvements of endurance performance. The purpose of this study is to find the potential failure mechanism of the CVVL BLDC moto in early stage of development based on the design properties and design the accelerated life test model. Methods : CVVL BLDC is consist of brushs, coil, magnetic, PCB, bearing and so on. Each component has a latent failure mechanism caused by temperature, humidity, vibration. By analysis result of the failure mechanism, thermal fatigue is the most important factor of a durability of CVVL BLDC motor. So, we designed a new accelerated life test model for guarantee of the CVVL BLDC motor. Results : A crack occurred on via hole in test using the conditions we designed, so we did change the design to avoid this failure. The via hole dimension is changed a little larger, as a result we achieve improvements in reliability of the CVVL BLDC motor. By applying various kinds and extreme level of stresses, we can find the operating limits of products. Conclusion : In thesis, We analyzed the failure mechanism of CVVL BLDC and designed an accelerated life test method to give a guarantee for reliability. Based on the test results, we could improve the reliability of developments by change of design.
차량용 Built-in 청소기용 SRM 드라이브 시스템 개발
이영수(Young-Soo Lee),노정민(Jeongmin Noh),이대진(Daejin Lee),김재혁(Jaehyuck Kim),선한걸(Han-Geol Seon),한만승(Man-Seung Han) 전력전자학회 2017 전력전자학회 논문지 Vol.22 No.3
This paper discusses the design and control of a switched reluctance motor (SRM) drive system for a built-in car vacuum cleaner. The growing popularity of outdoor activities and recreation has led the automobile industry to expand technologies that increase the convenience of vehicles, and thus, a built-in car vacuum cleaner was introduced. However, the existing DC motor of a vacuum cleaning system has several disadvantages, such as maintenance cost and lifespan issues of its commutator-brush structure. An SRM can be a good alternative to the existing DC motor because of its high-speed capability, long lifespan, low maintenance cost, and high efficiency, among other advantages. A prototype SRM drive is designed and manufactured to verify its feasibility for use in a built-in car vacuum cleaning system. Dynamic simulation is conducted to determine the optimal switching angle for maximum efficiency and minimum torque ripple. Load test, noise measurement, and suction-power tests are also carried out.