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추적조사를 중심으로 한 腰椎間板脫出症에 대한 蜈蚣藥鍼의 臨床的 硏究
최회강,소기숙,고강훈,박소영,김성남,이종덕,원경숙,문형철,김성철 大韓鍼灸學會 2003 대한침구의학회지 Vol.20 No.3
Objective : This study is performed for the purpose of examining the efficacy of the scolopendrid(Scolopendra morsitans L) which has been to low back pain as a folk remedy. Methods & Results : Seventy patints with H.I.V.D. treated with the scolopendrid aquacupuncture and examined 4 tests; D.I.T.I., physical test, Oswestry disability index, and self-conscious pain rate were studied. And we follow up after discharge, we evaluated the present state and recovery period. Or we evaluated by herniated type and duration of onset. There was 58~97% of efficacy rate in each tests. Moreover, statistically valuable change in all 7D.I.T.I. points and in disability index and in self-conscious pain rate was showed. Conclusion : The scolopendrid aquacupuncture is possible to be effective terating the H.I.V.D patients. so we suggest the possibility using this new remedy to the H.I.V.D. patients.
The Utility Power Factor Control system of Photovoltaic Power Generation System
Kang-Hoon Koh,Hyun-Woo Lee,Ki-Young Suh,Katsunori Taniguchi 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
The photovoltaic power generation system has a great future as clean energy instead of fossil fuel, which has many environmental problems such as exhausted gas or air pollution. In a utility interactive photovoltaic generation system, a three phase inverter is used for the connection between the photovoltaic array and the utility. This paper presents a three phase inverter for photovoltaic power system with current controller, voltage controller, PLL control system and the phase detector of interactive voltage by using dq transformation. The proposed inverter system provides a sinusoidal ac current for domestic loads and the utility line with unity power factor.<br/>
Study on mold sterilization using High Electric field generation system
Kang-Hoon Koh,Kee-Yeon Joe,Wook-Jung Kang,Hyun-Woo Lee 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
There are several electricity applied sterilizers such as sterilizer with high frequency, sterilizer with ozone, sterilizer with high voltage, and so on. Those sterilizers feature "because there IS no chemical process, there is no secondly environmental pollution" At the power conversion part, ZVS and ZCS methods have been used that it results in reduced switching loss, miniaturized size, and lightened weight. Besides, the current in the device is smaller than that of existing method. Thus, it is expected that the cost of sterilization process, when quality of the device is measured by power consumption, will be reduced.
고강훈(Kang-Hoon Koh),김천식(Chun-Sik Kim),김수용(Soo-Young Kim),박정우(Jung-Woo Park),고희석(Hee-Suk Koh),이현우(Hyun-Woo Lee) 한국조명·전기설비학회 2000 한국조명·전기설비학회 학술대회논문집 Vol.2000 No.-
This paper is a study if remote control system with KEN that is not only superior-manufacture ability-hardware; that is to say, the hardware is HMI/SCADA solution and it has been developed to sub-station and power management system, which is easy, fast and suitable for users to work with, but also compatible solution with domestic environment. Futhermore, the hardware has been developed by completely domestic technology with knowledge from various actual experiences. In the long run, for uninterruptible power supply to train, building, and factory, real time tele-supervisory control to power facilities.
최대 전력 평형/불평형 경계점 제어를 이용한 MPPT제어에 관한 연구
高康熏(Kang-Hoon Koh),姜兌炅(Tae-Kyeng Kang),李鉉雨(Hyun-Woo Lee),禹靖仁(Jung-In Woo) 대한전기학회 2006 전기학회논문지 B Vol.55 No.1
This paper proposes a simple MPPT control scheme of a based Current-Control-Loop system that can be obtains a lot of advantage to compare with another digital control method, P&O(Perturbation and Observation) and IncCond(Incremental Conductance) algorithm, that is applied mostly a PV system. An existent method is needed an expensive processor such as DSP that calculated to change the measure power of a using current and voltage sensor at the once. Therefore, it is applied a small home power generation system that required many expenses. But, a proposed method is easy to solve the cost reduction and power unbalance problems that it is used by control scheme to limit error of a current control of common sensor. This proposed algorithm had verified through a simulation and an experiment results on battery charger using PIC that is the microprocessor of a low price.
고강훈(Kang-Hoon Koh),이현우(Hyun-Woo Lee),김영철(Young-Cheal Kim),최광주(Kwang-Joo Choi) 한국조명·전기설비학회 1999 한국조명·전기설비학회 학술대회논문집 Vol.1999 No.-
This paper describes Trans-less type utility interactive system that is combined with buck/boost chopper applying partial resonant method, which remove Trans, and high efficient PWM inverter. Therefore, it is possible to make it lightweight, to cut down the cost, and to improve its reliability. What the merits of this system are that we can transmit arbitrary power to load and utility regardless of generating voltage magnitude and we can always obtain high factor controlling by equal phase signal with utility.