http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
신재생에너지 어플리케이션을 위한 등전류 공유 특성이 내장된 인터리브드 준공진형 DC-DC 컨버터
공임보(Im-Bo Kong),박선근(Sun-Geun Park),가종현(Jong-Hyeon Ka),어현석(Hyeon-Seok Eo),차시온,김욱성(Wook-Sung Kim) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
We propose an isolated high-voltage-gain quasi-resonant dc-dc converter with a built-in equal current sharing characteristic for the renewable energy applications. The proposed converter adopts an interleaved connection in the primary side, reducing input current ripple, and includes the bi-functional circuit operating as the switched-capacitor cells and two active-clamped circuits simultaneously. The converter realizes high voltage conversion ratio without using extreme duty ratio. A 320W laboratory prototype that operates at input of 26 V-34 V and output of 400 V is fabricated to verify the effectiveness of the proposed converter.
칼만 필터를 활용한 MOSFET 접합부 온도 정밀 추정 알고리즘
이용경,남은택,공임보,채수용 전력전자학회 2024 전력전자학회 논문지 Vol.29 No.2
In this paper, an algorithm that utilizes a low-speed temperature sensor and Kalman filter was introduced to estimate the junction temperature of a power MOSFET in real time. The Kalman filter was designed to estimate the junction and internal layers’ temperatures on the basis of the Cauer thermal model. The calculated power loss and measured ambient temperature of a MOSFET were used as input for the Kalman filter to estimate the junction temperature. The proposed algorithm can effectively estimate variations in junction temperature even in the presence of uncertainties in the thermal model and measurement noise. The effectiveness of the proposed algorithm was evaluated in simulations and hardware experiments by using a synchronous buck DC-DC converter.