인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.6
- 수록면
- 224 - 232 (9page)
- DOI
- 10.6113/TKPE.2024.29.3.224
이용수
초록· 키워드
The auxiliary power supply unit for railway vehicles provides a substantial amount of power to passenger cars. Generally, maintaining isolation from the catenary power line to the auxiliary power in the compartment is crucial. To achieve electrical isolation, a highly efficient LLC resonant converter is employed among isolated DC-DC converters. Generally, resonant converters primarily utilize PFM control methods. However, increasing the switching frequency at high input voltages is limited, causing a challenge in handling wide input voltage fluctuations from the overhead catenary power line. To address this limitation, the PWM control method is introduced alongside the existing PFM control method, resulting in the presence of two controllers. However, as these two controllers regulate the output voltage differently, output voltage overshoot is possible due to considerable input voltage fluctuations. This paper proposes a method that combines PFM and PWM controllers, along with feed-forward compensation, to address these shortcomings. The effectiveness of the proposed method is validated through PSIM simulation and experimentation.
#3-Level LLC resonant converter
#Wide input voltage range
#Feed-forward compensation
#Hybrid(PFM,PWM) controller
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목차
- Abstract
- 1. 서론
- 2. 3-레벨 LLC 공진형 컨버터 설계
- 3. 3-레벨 LLC 공진형 컨버터 전압 제어기 설계
- 4. 모의 해석
- 5. 실험
- 6. 결론
- References