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eVTOL 항공기용 무선 전력 전송을 위한 전송 거리 보상 시스템 방안에 대한 연구
노현규,신동석 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.12
This paper proposes a compensation system method for wireless power transmission technology that can efficiently supply power to parts with different heights of manufacturers in developing eVTOL aircraft, and the urban air mobility industry is currently attracting attention to alleviate the congestion and saturation of the ground transport network. The configuration consists of a two-stage circuit of a boost converter and an LLC full-bridge converter, which compares and analyzes the existing LLC full-bridge operation and design method and gain curve to verify the design of the proposed wireless power transmission compensation system. In addition, a wide range of output compensation results were analyzed through the gain compensation of the resonance compensation system and duty control of the boost converter. The results were analyzed by simulating the wireless power transmission compensation system. In this study, even if the transmission distance fluctuates, the validity of this study was verified by compensating for the gain value of 0.9 or more with the resonance compensation system and satisfying the output specifications of the LLC full-bridge circuit through boost converter output control. Therefore, these results are expected to contribute to the future development of the UAM industry by eliminating the inconvenience of eVTOL wired charging.
풍하중을 고려한 대형 레이더 구동부의 구조 안전성 평가
노현규,박영진,유준선,김휘재,라영은,장은정,이원철,박노철 한국소음진동공학회 2022 한국소음진동공학회 논문집 Vol.32 No.5
In this study, we confirmed the structural stability of bearings applied to large radar structures via finite element analysis and verified the margin of safety of bearings due to wind load. The analysis was performed using the weight of the antenna as a point mass, and various wind load conditions were input as a remote force. The structural safety was confirmed based on the amount of deformation of the bearing, and the margin of safety under wind load and rotational conditions was evaluated and confirmed.