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a-b-c frame에서 구현한 AC-DCconverter 전류제어기
조우성(Woo-Sung Cho),노의철(Eui-Cheol Noh),김인동(In-Dong Kim),전성즙(Seong-Jeub Jeon),박경훈(Kyung-Hun Park),임헌호(Hun-Ho Lim) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
A new current controller implemented in a-b-c frame for AC- DC converter is proposed.<br/> The proposed MTPWM(Modified Trapezoidal PWM),Which is quite suitable for three phase AC-DC converter. It is known that MTPWM has good harmonics characteristics for high modulation index. It is very simple and requires no transformation in it. The results of computer simulation are shown for the validity of proposal.
PWM Cuk AC-AC 컨버터를 위한 Undeland 스너버
최남섭(Nam-Sup Choi),김인동(In-Dong Kim),노의철(Eui-Cheol Noh),Li Yulong 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
This paper proposes a snubber circuit for a PWM Cuk AC-AC converter. The proposed snubber makes use of an Undeland snubber as a commutation aids. So the snubber keeps such good features as small count of snubber elements, reduction of voltage/current stress of main switching devices and improved efficiency. This paper shows simulation results to verify the adaptability and feasibility of the proposed snubber.