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토크 향상을 위한 영구자석 보조 권선계자형 동기전동기 설계
류준열(Junyeol Ryu),황성우(Sungwoo Hwang),임명섭(Myungseop Lim),홍정표(Jungpyo Hong) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
In order to improve the performance of Wound Field Synchronous Motor (WFSM), Permanent Magnet assisted(PM-assisted) WFSM is proposed and investigated in this paper. The effects of the inserted permanent magnet are increase of the air gap flux and mitigation of the magnetic saturation of iron core. The increase of the air gap flux and mitigation of the magnetic saturation leads to increase torque. Therefore, the torque of PM-assisted WFSM is improved. To verify the torque improvement, the most effective position of the permanent magnet insertion in PM-assisted WFSM is decided by comparing average torques in PM-assisted WFSM with the original one. The torque is calculated by 2-D finite element analysis. With the result, the PM-assistance is applied to a WFSM designed for Electric Vehicle traction motor. By comparing the results of simulated average torques of the original WFSM and the PM-assisted WFSM, the improvement of the torque is figured out.
전차부대 전투력 발휘가능지수 관점의 특기 할당에 관한 연구
안남수(Namsu Ahn),류준열(Junyeol Ryu),김수찬(Soochan Kim) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.2
Currently, the crews of ROK(Republic of Korea) Army tank forces consists of commissioned officers, noncommissioned officers, and enlisted soldiers. The crew members are assigned the main and auxiliary specialties, and ROK Army is putting a lot of effort into improving the capability of crews" allocated specialties through the weekly training sessions. However, there are two problems in the current procedure of specialties allocation to crews: the first is that the allocation of specialty from the perspective of the unit"s combat power exertion is not considered, and the second is that the combination of main and auxiliary specialties should be considered for policy reasons. In this study, the combat power exertion index of the tank forces is first defined, and then mathematical model and heuristic algorithm are suggested to address the problem. Extensive computational results indicate that the algorithm can help the commander to make the better decision during war time situation.