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다중브리지로 구성된 UPQC(Unified Power Quality Conditioner)의 동적 성능분석
韓炳文(Byung-Moon Han),蘇龍哲(Yong-Cheol Soh),金顯宇(Hyun-Woo Kim) 대한전기학회 2006 전기학회논문지 P Vol.55 No.2
This paper describes experimental analysis of UPQC, which is composed of cascaded H-bridges and single-phase multi-winding transformers. The operational characteristic was analyzed through experimental works with a scaled model, and simulations with PSCAD/EMTDC. The UPQC proposed in this paper can be directly connected to the distribution line without series injection transformers. It has flexibility to expand the operation voltage by increasing the number of H-bridge modules. The analysis results can be utilized to design the actual UPQC system applicable for the actual distribution system.
3-레벨 인버터식 STATCOM의 상하단 직류캐패시터의 전압평형유지를 위한 제어기 특성 분석
한병문(Byung-Moon Han),이준기(Joon-Gee Lee),백승택(Seung-Taek Baek) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
This paper describes dynamic performance analysis of a STATCOM based on 3-1evel inverter. Major attention is focused on the controller design for 3-level inverter, including regulator design for voltage sharing across the dc link capacitors. A detailed simulation model was developed with Matlab and a scaled hardware model was built and tested to verify the proposed approach. Both simulation and experimental results confirm that developed controller can regulate the reactive power. The developed controller could be effectively applied for the actual hardware system of STATCOM
축소모형에 의한 공진형 전류원 인버터식 무효전력보상기의 특성 분석
한병문(Byung-Moon Han),백승택(Seung-Taek Baek),박덕희(Duk-Hee Park),소용철(Yong-Cheol So) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper describes a scaled model for PWM thyristor current-source inverter with a commutation circuit. The system consists of a 6-pulse thyristor bridge and an LC resonant circuit with thyristor switches, which offers thyristors to have turn-off capability for PWM operation with minimal switching losses. The proposed system can be used as a reactive power compensator with PWM operation for the utilitity application. There would be two advantages in the proposed system over the existing voltage source inverter. One is the low system cost due to using the conventional thyristors. Another is easy expansion of system operation voltage because the series operation of thyristor devices is already proven in HVDC system.<br/> <br/>
한병문(Byung-Moon Han),박덕희(Duk-Hee Park),박지용(Ji-Yong Park) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
Abstract - This paper describes a simulation model to analyze the dynamic performance of Unified Power Flow Controller, winch adjust flexibly the active and reactive power flow through the ac transmission line.<br/> The basic operation was analyzed in detail using equivalent circuits and the design of control system was developed using vector control method. A simulation model with EMTP code was conceived to evaluate the performance of the Unified power Flow Controller The simulation results show that the developed simulation model
한병문(Byung-Moon Han),한경희(Kyung-Hee Han),신익상(Ik-Shang Shin),강중구(Joong-Goo Kang) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
This paper dectribes a dynamic var compensator to compensate the line reaciance for power transmission and distribution system. The compensotor consists of a voltage souice inverter with dc aipacitor, coupling transformers, and control circuit. The opration of compensator was verified by computer simulations with EMTP and experimental works with a scaled hardware model. The advantage of the proposed system is rapid and continuuous regulation of the reactive power
전압원인버터방식 송전용 무효전력보상기의 제어시스템 설계
한병문(Byung-Moon Han) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
This paper describes a detailed simulation model of the static condenser (STATCON) to analyze the dynamic interaction with the ac transmission line.<br/> The static condenser was' represented by a 12-pulse voltage-source inverter sharing an energy storage de capacitor. The voltage-source inverter consists of two 6-pulse bridges modeled with ideal gate-turn-off switches. The control system for the static condenser was designed through a mathematical model deduced from the equivalent circuit.<br/> Simulation results show that the conceived model is very effective to analyze the dynanuc mteraction between the static condenser and the ac transmission system,