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전태원(T.W. Chun),T.T Vu(트란탄부),이홍희(H.H. Lee),김흥근(H.G. Kim),노의철(E.C. Nho) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
In this paper, the low-cost drive circuit of dc motor for a multipurpose small-size electric vehicle is developed. In order to change smoothly the rotating direction of dc motor for traction, the operating sequence of both the field current and the armature voltage according to the angle of a pedal of vehicle is suggested. The simulation study is carrier out to verify the proposed method, and the control system is implemented with 8-bit AVR.
플라이휠 저장에너지 UPS의 성능 시험을 위한 순간정전 및 전압불평형 발생기
김중원(J.W. Kim),이기수(K.S. Lee),변우열(W.Y, Byeon),노의철(E.C. Nho),김인동(I.D. Kim),전태원(T.W. Chun),김흥근(H.G. Kim) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
This paper deals with a novel 3-phase power quality disturbance generator. The proposed generator can be applied to the performance that of custom power devices. Voltage sag, swell, outage unbalance and phase shift are provided by the generator. The control scheme for the disturbance generation is simple, and hardware setup is cost effective compared with conventional scheme. The operating principle of the generator is described and the usefulness verified through simulation with 10㎸A power rating.
LLC 공진형 컨버터를 적용한 전기자동차 고압배터리 충전기 개발
유종욱(J. W. Yoo),김경만(G. M. Kim),김태권(T. K. Kim),강찬호(C. H. Kang),전태원(T. W. Chun) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
전기자동차의 고압배터리는 차종과 배터리의 종류에 따라 다양한 공칭전압을 가지며, 하나의 모델에 적용된 배터리도 사용에 따라 충전전압의 범위가 넓기 때문에 충전기의 출력전압이 광범위한 특성을 가져야 한다. 본 논문에서는 단상 110/220V 입력전원에 대하여 250V ~ 450V 범위의 직류전압의 특성을 만족시키기 위하여 LLC 공진형 컨버터를 적용하였으며, 제작된 시제품을 통하여 실차 배터리 충전시험을 실시하여 그 성능을 확인한다.
전태원(T.W.Chun),김경만(K.M.Kim),이홍희(H.H.Lee),김흥근(H.G.Kim),노의철(E.C.Nho) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
Since 1960s. con tamer shipping volume has increased dramatically and continuous on a trend of rapid growth, and so the number of containers handled at the port increases In order to improve yard crane operating efficiency, the precise position measurement of the yard crane is important. This paper describes the method to measure the absolute position of yard crane using the output pulse of an encoder and infrared sensors. The crane position is calculated by counting the output pulse of an incremental encoder, which is mounted on the wheel in the crane By the way, the wheel slippage on rail may cause some errors in crane position information obtained from encoder pulses, and the errors in the crane position information are compensated with infrared sensors. The performance of proposed method is verified on experimental results with the simulator of yard crane, the size of which is about 1/10 with the real crane.
3상 다이나믹 UPS 성능 시험을 위한 Sag-Swell 발생기
김중원(J.W. Kim),이기수(K.S. Lee),변우열(W.Y. Byun),노의철(E.C. Nho),김인동(I.D. Kim),전태원(T.W. Chun),김흥근(H.G. Kim) 한국조명·전기설비학회 2004 한국조명·전기설비학회 학술대회논문집 Vol.2004 No.5월
This Paper describes a new 3 phase Sag-Swell generator for the test of custom power devices such as UPS, DVR, DSTATCOM, SSTS, etc. The proposed scheme has good features of simple structure, high reliability, wide range of sag and swell variation. It can also generate voltage outage. The control scheme for the generation is simple. The operation principle of the proposed scheme is described and verified through simulations.
석진규(J.K. Seok),강성관(S.K. Kang),송웅협(W.H. Song),조원우(W.W. Jo),노의철(E.C. Nho),김인동(I.D. Kim),전태원(T.W. Chun),김홍근(H.G. Kim) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.1
This paper deals with a welding time for a spot welding system. Conventional welding machine adopts several tens of switching devices connected in parallel to obtain a short welding time. This paper analyzed a welding system consisting with 4 IGBT switchs for a full-bridge inverter and conventional 60 [Hz] transformer. The simulation and experimental results show that the welding time can be minimized to 5 [ms] with the proposed scheme.
비선형 부하에 대하여 위상급변이 가능한 전압변동 발생기
박성대(P.S. Park),한흥수(H.S. Han),노의철(E.C. Nho),김인동(I.D. Kim),최남섭(N.S. Choi),전태원(T.W. Chun),김흥근(H.G. Kim) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
This paper deals with a new voltage disturbance generator with nonlinear load for the performance test of the custom power devices. Voltage sag, swell, outage, unbalance and phase jump after outage are provided by the generator. The improved phase jump operating principle of the generator with nonlinear load is described and analysed. The usefulness of the generator is verified through simulation.