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Twin converter를 이용한 전자식 안정기에 관한 연구
이상집(Sang-Chip Lee),한홍일(Hong-Il Han),성낙규(Nark-Kuy Sung),백동현(Dong-Hyun Baek),김성남(Sung-Nam Kim),한경희(Kyung-Hee Han) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
The rectifier circuit has been used in the various fields of inverter progress. This is simple and low price. Otherwise, it has many problems in harmonic, low power factor and etc.<br/> This paper use the twin converter of two jewel booster. It doesn't need the detection of voltage, current and control PWM. The twin converter has stably the rectification source. Also, the circuit is used a half-bridge inverter in the electronic ballast for lighting. Therefore, this method is confirmed in high efficiency.
태양광발전을 이용한 냉동.냉장창고용 냉수펌프의 에너지절감 기법
김대균,전기영,이상집,정춘병,이훈구,한경희,Kim, Dae-Gyun,Jeon, Kee-Young,Lee, Sang-Chip,Chung, Choon-Byeong,Lee, Hoon-Goo,Han, Kyung-Hee 한국조명전기설비학회 2005 조명·전기설비학회논문지 Vol.19 No.6
냉동 냉장창고용 냉수펌프 시스템을 태양광발전 시스템과 연계하여 펌프의 양정 및 유량의 변화에 따른 압력의 변화에도 불구하고 목표치 압력을 일정하게 제어할 수 있도록 하였다. BLDC 모터를 벡터제어 함으로써 각 운전속도의 영역에서 최대토크 운전 및 높은 신뢰성을 가능하도록 하여 냉동 냉장창고용 냉수 펌프 시스템의 에너지 절감 효과를 실현하였다. We are interaction refrigeration warehouse cold water pump system and photovoltaic generation system. At this time, a target pressure is able to control in spite of change of the pressure according to pump head and rate of flow of pump. Also, we carry out the vector control of BLDC motor with the maximum torque operation and a high reliability from territory of each operation speed. Therefore, in this paper, we conclude energy saving technique of refrigeration warehouse cold water pump system.
김대균(Dae-Gyun Kim),전기영(Kee-Young Jeon),함년근(Nyun-Gun Hahm),이상집(Sang-Chip Lee),오봉환(Bong-Hwan Oh),정춘병(Choon-Byeong Chung),김용주(Yong-Joo Kim),한경희(Kyung-Hee Han) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
The paper proposes the solar photovoltaic power generation system method for photovoltaic system to solve the power shortage due the sudden power demand. So that supplied electric power to system at appearance during surplus electric power minute and unit moment link driving with common use system is available, digital PLL circuit system voltage through composition and phase of solar photovoltatic power generation system to do synchronization do. Feed forward controller was applied to get fast current response. Solar cell that is changed by solar radiation always kept the maximum output when it used Step up chopper. The dynamic character had checked through simulation used Matlab Sumulink and confirmed through an experiment.
정춘병(Choon-Byeong Chung),김대균(Dae-Gun Kim),함년근(Nyun-Gun Hahm),이상집(Sang-Chip Lee),전기영(Kee-Young Jeon),이훈구,한경희(Kyung-Hee Han) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월
본 논문에서는 최대 견인력 제어를 위해서 최소 차원 부하 토크 외란 관측기를 이용하여 점착력 계수를 추정하고 추정한 점착력 계수의 미분치를 PI 토크를 제어하는 Anti-slip 제어를 제안한다. 최소차원 부하 토크 외란 관측기는 회전자의 위치 정보와 토크 전류의 정보를 이용하여 부하 외란토크를 추정하고, 부하 외란 토크에 철도차량 상수를 이용하여 점착력 계수를 추정한다. 또한 부하토크외란 관측기는 구조가 간단하며, 시스템의 외란 및 각종 제어이득, 시스템의 상수 변화에 대해서도 견실한 견인력 제어 특성을 가지고 있다. 이와 같은 시스템의 모델링과 전동기 토크에 대한 회전자의 위치 정보를 이용하여 최소차원 부하 토크 외란 관측기의 상태변수인 점착력 계수를 추정하고, 추정한 점착력 계수의 미분치를 PI 토크 Anti-Slip제어하여, 최대 견인력 제어가 되도록 하였다
에너지 절감 기법을 적용한 냉동 냉장 창고 운영에 관한 연구
김대균(Dae-Gyun Kim),권중동(Jung-Dong Kwon),함년근(Nyun-Gun Hahm),이상집(Sang-Chip Lee),김익환(ik-Hwan Kim),이승환(Seung-Hwan Lee),이훈구(Hoon-Goo Lee),한경희(Kyung-Hee Han) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
The human beings have increased concern about Energy saving and alternative energy. The power demand has increased the growth of industry and the improvement of life. We have to explore alternate energy sources and utilize effectively domestic resources. The lighting equipments developed Energy saving by using an electric ballast. The load installation should be promoted to rational power management, according to the network, intelligent, and high-function. Therefore, this paper has studied the method of energy saving and consulting.
정춘병(Chung-Byeona Chung),전기영(Kee-Young Jeon),이상집(Sang-Chip Lee),김대균(Dae-Gyun Kim),이훈구(Hoon-Goo Lee),한경희(Kyung-Hee Han) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.11월
We are interaction refrigeration warehouse cold water pump system and photovoltaic generation system. At this time, a target pressure is able to control in spite of change of the pressure according to pump head and rate of flow of pump. Also, we carry out the vector control of BLDC motor with the maximum torque operation and a high reliability from territory of each operation speed. Therefore, in this paper, we conclude energy saving technique of refrigeration warehouse cold water pump system.
조정민(Jeong-Min Jho),함년근(Nyun-Kun Hahm),이상집(Sang-Chip Lee),이승환(Seung-Hwan Lee),이훈구(Hoon-Goo Lee),김용주(Young-Ju Kim),한경희(Kyung-Hee Han) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
The conventional PI controller are fragile in parameter variation and load-variation. Therefore, in this paper, a speed control algorithm based on the Fuzzy PI controller is proposed for the high performance speed control of a voltage-source inverter to drive 3-phase induction motors. The computer simulation results show that the proposed controller are more excellent control characteristics than conventional PI controller in transient-state and steady-state response.<br/> <br/>