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柳泓齊(Hong-Je Ryoo),金鍾洙(Jong-Soo Kim),林根熙(Geun-Hie Rim),G. I. Goussev,D. Sytykh 대한전기학회 2007 전기학회논문지 Vol.56 No.1
In this paper, a novel new pulse power generator based on IGBT stacks is proposed for pulse power application. Because it can generate up to 60㎸ pulse output voltage without any step- up transformer or pulse forming network, it has advantages of fast rising time, easiness of pulse width variation and rectangular pulse shape. Proposed scheme consists of series connected 9 power stages to generate maximum 60㎸ output pulse and one series resonant power inverter to charge DC capacitor voltage. Each power stages are configured as 8 series connected power cells and each power cell generates up to 850VDC pulse. Finally pulse output voltage is applied using total 72 series connected IGBTs. To reduce component for gate power supply, a simple and robust gate drive circuit is proposed. For gating signal synchronization, full bridge inverter and pulse transformer generates on-off signals of IGBT gating with gate power simultaneously and it has very good characteristics of short circuit protection.
류홍제(Hong-Je Ryoo),김종수(Jong-Su Kim),김수진(Su-jin Kim),D. Sytykh 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
In this paper, the design of power supply for high power magnetron system is stuied. For magnetron drive, three kinds of power supply is required for main high voltage, magnet and heating filament. Detail design was accomplished with basic simulation and real system is developing based on basic design.
류홍제(Hong-Je Ryoo),김수진(Su-jin Kim),이현정(Hyun-jeong Lee),김종수(Jong-Su Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
In this paper, the design of power supply for high power magnetron system is stuied. For magnetron drive, three kinds of power supply is required for main high voltage, magnet and heating filament. Detail design was accomplished with basic simulation and real system is developing based on basic design.
보조 정류회로를 활용한 통합된 5 kW 급 소형 제논 램프 전원장치
류홍제,최민규,송승호 대한전기학회 2022 전기학회논문지 Vol.71 No.9
This paper deals with the integrated 5 kW xenon flash lamp power supply. In order to drive a xenon lamp used in an application field of light sintering of printed electronics, the power supply in consideration of load characteristics is required. The simmer power supply that maintains the xenon lamp's ignition is designed based on an LCC resonant converter with both voltage and current source characteristics. Also, an auxiliary rectifier and trigger applying high voltage are required to ignite the xenon lamp. And the power supply is designed based on a boost-type resonance circuit and a Cockcroft Walton voltage multiplier, respectively, in consideration of sharing the inverter with the simmer. This paper analyzes the topology of the proposed power supplies and selects the parameters and confirms them through simulation. Finally it was verified through experiments that the output voltages of the simmer, the auxiliary rectifier, and the trigger were 20 V, 400 V, and 10 kV, respectively.
류홍제(H.J Ryoo),김종수(J.S Kim) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
In this paper, the design of power supply for high power magnetron system is stuied. For magnetron drive, three kinds of power supply is required for main high voltage, magnet and heating filament. Detail design was accomplished with basic simulation and real system is developing based on basic design.