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전력선/무선 통합 모뎀을 이용한 Door Lock의 원격 제어 시스템
박종연,이후찬,최원호 강원대학교 산업기술연구소 2005 産業技術硏究 Vol.25 No.B
In this paper we proposed the remote control system for the door lock by the unified modem with the wireless and the power line modem. We developed the management system program between the door-lock system and the proposed unified modem. The infrared communication system was used between the Door-Lock system and the power line modem. With the unified developed modem and the Door-Lock system, it is possible to control remotely the developed system in the internet service area.
전압 제어 임피던스 변환기를 이용한 전원주파수 적응형 능동 전력 필터의 구현
장목순,김상훈,이후찬,박종연,Jang, Mok-Sun,Kim, Sang-Hoon,Lee, Hu-Chan,Park, Chong-Yeun 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.8
본 논문은 분산전원의 주파수 변동에 적응하는 아날로그형의 능동 전력 필터를 제안하였다. 주파수 변동이 심한 분산전원에서 비선형부하에 의해 발생한 고조파의 제거를 위해 전원의 고조파 전류와 주파수가 같고 위상차가 $180[^{\circ}]$인 보상 전류를 투입함으로써 전원의 고조파를 제거하였다. 이때 보상전류의 생성을 위한 기준전류 검출회로는 변동하는 전원 주파수를 추적하고 적응하도록 PLL과 VCGIC(Voltage Controlled Generalized Impedance Converter)를 사용하였다. 시뮬레이션과 실험을 통해 제안된 시스템이 주파수가 변동하는 분산전원의 고조파 전류를 효과적으로 제거함을 증명하였다. This paper proposes an analog type Active Power Filter that adapts to the frequency change of a distributed power supply system. The proposed system removes the harmonic currents in the source power by injecting a compensation current that has the same frequency, 180 degree out of phase with the harmonic currents generated by the load. The detection of the harmonics in the source power for creating the compensating current is realized by a PLL(Phase Lock Loop) and a VCGIC(Voltage Controlled Generalized Impedance Converter). The operation of the proposed system is verified by simulation and experiment.
전력선 통신을 이용한 원격 전력분석 및 제어시스템에 관한 연구
최원호(Won-ho Choi),이후찬(Hoo-chan Lee),박종연(Chong-yeun Park) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
RPA(Remort Power Analysis)and RC(Remote Control) System have been researched from former several decade for a various power rate system, a efficent power service and rising of personal expenses, etc. But the existing RPA and RC System have disadventage which are complex and high cost to install an individual communication network of electricity company. This paper proposed a new type of RPA and RC System using PLC with Internet. and made components for proposal system. so we made the PLC modem , the digital watt-hour meter with a build in PLC modem and the softwere on server computer for establishing the proposal system. The bit rate of the proposed system is about 4800bps.
단상 전원의 고조파 제거용 500VA급 Hybrid 필터 개발
박종연(Jong-Yeon Park),이후찬(Hu-Chan Lee),이봉진(Bong-Jin Lee) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.5월
Abstract - Because of the high cost for the active power filter, passive filters have been widly used to absorb harmonic currents of nonlinear loads and can also improve the power factor. They are not often optimal filters because the passive filters are designed with the fixed load conditions. In this paper we proposed the method which only the necessary harmonic filters are operated by detecting the various harmonic current components.By the experimental results using the proposed system for the 500VA rectifier load, we concluded that the researched hybrid filter is cost effective and the performance is better than the passive filter.
릴레이 구동회로 및 수동필터를 이용한 단상 전원의 부하 적응형 고조파 전류 제거 기법
朴鍾演(Jong-Yeon Park),李厚燦(Hu-Chan Lee),李奉振(Bong-Jin Lee),崔源豪(Won-Ho Choi) 대한전기학회 2006 전기학회논문지 B Vol.55 No.6
Because of the high cost for the active power filter, passive filters have been widly used to eliminate harmonic currents of nonlinear load and can also improve the power factor. They are not often optimal filters because the passive filters are designed under the fixed load conditions. In this paper we proposed the method which only the necessary harmonic filters are operated by detecting the various harmonic current components. We presents the new control method of passive filter selection type with the relay control circuit which is consist of analog GIC, comparater, flip-flop and etc. By the experimental results using the proposed system for the rectifier load, we concluded that the researched method is cost effective and the performance is better than the passive filter.
비선형부하에 의해 발생한 전원 전류의 고조파를 제거하기 위한 단상 병렬형 Active Power Filter의 구현
장목순(Moksoon Jang),이후찬(HuChan Lee),김상훈(SangHoon Kim),박종연(JongYeon Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper presents a single-phase parallel active power filter with an analog control circuit to eliminate for harmonic source currents generated by nonlinear loads. The proposed system removes the harmonic source currents by injecting a compensation current that is 180' out of phase with the load harmonic current. The detection of the load harmonics is realized by a simple new structure, referred to the Notch Filter with GIC (Generalized Impedance Converter), which has higher Q than existing harmonic detecters and a simpler structure. The compensation current is obtained using the proposed harmonic detection circuit, DC-Link voltage, and output current of the full-bridge inverter controlled current mode PWM controller. The operation of the proposed system is verified experimentally.
전원 전류 고조파 제거를 위한 수동 필터의 선택 및 시스템 (pp.573-574)
이봉진(Bong-Jin Lee),이후찬(Hu-Chan Lee),박종연(Jong-Yeon Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
본 논문에서는 1㎸A급 비선형 부하에서 발생한 고조파 전류의 저감을 위한 시스템을 설계 및 제작하였다. 제안된 시스템은 비선형 부하의 차수별(3~9차) 고조파 발생량을 검출한 후 설정된 기준치를 넘어서는 고조파들을 저감할 수 있도록 해당하는 고조파의 수동 필터만 스위치를 이용하여 연결하는 구조를 가진다. 스위칭을 위한 제어기는 아날로그 소자만으로 구성되어 있다. 제안된 방법은 기존 수동 필터의 다양한 비선형 부하에 적용되지 못하는 단점을 보완하는 동시에 능동 필터보다 단순하며 저가로 구현할 수 있다. 형광등 부하와 다이오드 정류 부하에 대한 실험을 통해 제안된 시스템의 성능과 타당성을 입증하였다.