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고출력 마그네트론 구동용 3.6 MW, $4\;{\mu}s$, 200 pps 펄스 모듈레이터 개발
장성덕,권세진,배영순,오종석,조무현,남궁원,손윤규,Jang Sung-Duck,Kwon Sei-Jin,Bae Young-Soon,Oh Jong-Seok,Cho Moo-Hyun,Namkung Won,Son Yoon-Kyoo 대한전기학회 2005 전기학회논문지C Vol.54 No.3
The Korean Superconducting Tokamak Advanced Research (KSTAR) tokamak device is being constructed to perform long-pulse, high-beta, advanced tokamak fusion physics experiments. The long-pulse operation requires the non-inductive current drive system such as the Lower-Hybrid Current Drive (LHCD) system. The LHCD system drives the non-inductive plasma current by means of C-band RF with 2-MW CW power and 5-GHz frequency. For the LHCD test experiments, an RF test system is developed. It is composed of a 5-GHz, 1.5-MW pulsed magnetron and a compact pulse modulator with $4\;{\mu}s$ of pulse width. The pulse modulator provides the maximum output voltage of 45 kV and the maximum current of 90 A. It is composed of 7 stages of Pulse Forming Network (PFN), a thyratron tube (E2V, CX1191D), and a pulse transformer with 1:4 step-up ratio. In this paper, the detailed design and the performance test of the pulse modulator are presented.
최효진(Choi, Hyo-Jin),권세진(Kwon, Sei-Jin),손윤규(Son, Yoon-Gyu),서재학(Suh, Jae-Hak),장성덕(Jang, Sung-Duk),오종석(Oh, Jong-Seok),강신일(Kang, Sin-Il),이현영(Lee, Hyun-Young),권오정(Kwon, Oh-Jung),이병철(Lee, Byung-Chul),황진수(Hwa 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
본 논문에서는 750 kW 풍력발전용 인버터를 개발한 결과와 2년 동안의 현장실증을 통하여 얻어진 경험을 바탕으로 2 MW 영구자석형 동기발전기(PMSG, Permanent Magnet Synchronous Generator)의 전력변환을 위한 병렬형 인버터의 시뮬레이션과 이를 통한 설계와 제작 및 기본시험 과정을 소개하고자 한다.
이현영(Lee, Hyun-Young),강신일(Kang, Sin-Il),권오정(Kwon, Oh-Jung),최효진(Choi, Hyo-Jin),권세진(Kwon, Sei-Jin),손윤규(Son, Yoon-Gyu),서재학(Suh, Jae-Hak),장성덕(Jang, Sung-Duk),오종석(Oh, Jong-Seok),이병철(Lee, Byung-Chul),황진수(Hwa 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.11
본 논문에서는 750kW 풍력발전용 인버터를 개발한 결과와 2년 동안의 현장실증을 통하여 얻어진 경험을 바탕으로 2MW 영구자석형 동기발전기(RMSG, Permanent Magnet Synchronous Generator)의 전력변환을 위한 병렬형 인버터의 시뮬레이션과 이를 통한 설계와 제작 및 기본시험 과정을 소개하고자 한다.
손윤규(Son, Yoon-Gyu),서재학(Suh, Jae-Hak),권세진(Kwon, Sei-Jin),장성덕(Jang, Seung-Duck),오종석(Oh, Jong-Seok),황진수(Hwang, Jin-Su),강신일(Kang, Sin-Il),박가우(Park, Ga-Woo),권오정(Kwon, O-Jung),정진화(Chung, Chin-Hwa),한경섭(Han, 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
The 800-kW PM (permanent magnet) synchronous generator is developed as a wind power generator. The matching converter is designed to control the torque and power depending on the wind speed regime. The generator starts to generate the power at the speed of 9 rpm and the rated output is generated at the speed of 25 rpm. The rated output power of an inverter is 750 kW when the PM synchronous generator is delivering 800 kW to the inverter. The inverter is specially designed to perform the maximum power point tracking (MPPT) at the low wind speed regime that is typical wind environment in Korea. The inverter test was done with a 2 MW M-G system at KERI (Korea Electric Research Institute). The M-G set has a 2 MW motor driver and a 38:1 gear to match the speed between the motor and the PM generator. The torque simulating the wind is applied to the PM generator by a DC motor. The test results show the inverter efficiency of 94.3% at the rated power generating condition. The measured values show that the MPPT algorithm is working well. Overall reliability will be verified through the long-term site test.
김경렬(Kyung-Ryul Kim),박준(Jun Park),김형균(Hyung-Gyun Kim),김희섭(Hee-Sub Kim),권세진(Sei-Jin Kwon),황운하(Woon-Ha Hwang),윤종철(Jong-Cheol Yoon),노준택(Jun-Taek Noh) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
This paper describes the design requirement, manufacture and optimization of a prototype cooling water skid for the PEFP 20 MeV DTL. The main objective of this prototype is to control resonance frequency of DTL system through the temperature control of cooling water. It is to resonant frequency of the drift tube cavities to 350 ㎒. The prototype water skid operates in combination with the low-level rf system (LLRF) to set the operating point of the drift tube. The frequency loop from the LLRF system will define the set points for the temperature control loop which will be able to control the tuning of the drift tube by regulating its temperature. This paper describes the design of a prototype cooling water skid required for the temperature control of the DTL cavities, focusing in the modeling and simulation of the cooling system, the sizing of water pumping skid component and the temperature control scheme.
PEFP 100 MeV Drift Tube의 열 및 유동 특성에 관한 연구
김경렬(Kyung-Ryul Kim),박준(Jun Park),김형균(Hyung-Gyun Kim),김희섭(Hee-Sub Kim),황운하(Woon-Ha Hwang),윤종철(Jong-Cheol Yoon),권세진(Sei-Jin Kwon),손윤규(Yoon-Gyu Son) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
The Resonance Control Cooling System (RCCS) was designed and fabricated by Pohang Accelerator Laboratory (PAL) for the 20 MeV proton Drift Tube Linac (DTL) of the Proton Engineering Frontier Project (PEFP). Design of the RCCS pumping skid depend on the characteristic of Drift Tube (DT) in the DTL Tank. The 100 MeV DT is different from configuration of the 20 MeV DT. The 100 MeV DT contains an Electro Quadrupole Magnet (EQM) which is made of a hollow conductor. We have to confirm the property of thermal and hydraulics with size and configuration of the EQM because that is important parameter to design the RCCS of 100 MeV DTL. This paper discussed the result of fluid dynamics model, test by the DT tester, study on the thermal property and finally design of the RCCS pumping skid for the 100 MeV DTL.