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박선재,이화석,김찬인,박종후,전희종,염정덕 전력전자학회 2013 JOURNAL OF POWER ELECTRONICS Vol.13 No.3
As a result of the depletion of fossil fuels and environmental contamination, it has become important to use renewable energy. For the stable utilization of renewable energy sources, energy storage devices must be used. In addition, renewable and distributed power sources with energy storage devices must operate stably under grid-connected mode. This paper proposed dynamic response modeling for renewable power generation systems including a charger/discharger with an energy storage device in order to derive a method to guarantee stable operation while fully utilizing the energy from the energy storage device. In this paper, the principle operation and design guidelines of the proposed scheme are presented, along with a performance analysis and simulation results using MATLAB and PSIM. Finally, a hardware prototype of a 1kW power conditioning system with an energy storage device has been implemented for experimental verification of the proposed converter system.
박선재,Masaaki NISHIKAWA 한국곤충학회 2010 Entomological Research Vol.40 No.2
A genus and species Prionochaeta sibirica Reitter is identified for the first time in Korea. A habitus photo, redescription, and illustrations of diagnostic characters of the species are provided.
First record of the family Cerylonidae (Coleoptera: Cucujoidea) in Korea
박선재,안기정 한국곤충학회 2007 Entomological Research Vol.37 No.3
The beetle family Cerylonidae, represented by Cautomus hystriculus Sharp, is identified for the first time in Korea. A habitus photo, redescription, diagnostic characters and illustrations of the species are provided.
박선재,박종후,신종현,전희종 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.6
Energy storage devices are necessary to obtain stable utilization of renewable energysources. When black-out occurs, distributed renewable power sources with energy storage devices canoperate under standalone mode as uninterruptable power supply. This paper proposes a dynamicresponse analysis with small-signal modeling for the standalone operation of a photovoltaic powergeneration system that includes a bidirectional charger/discharger with a battery. Furthermore, itproposes a DC-link voltage controller design of the entire power conditioning system, using thestorage current under standalone operation. The purpose of this controller is to guarantee the stableoperation of the renewable source and the storage subsystem, with the power conversion of a veryefficient bypass-type PCS. This paper presents the operating principle and design guidelines of theproposed scheme, along with performance analysis and simulation. Finally, a hardware prototypeof 1-kW power conditioning system with an energy storage device is implemented, for experimentalverification of the proposed converter system.
박선재,Hideto HOSHINA,안기정 한국곤충학회 2004 Entomological Research Vol.34 No.3
A taxonomic study of the subgenus Agathidium of the genus Agathidium Panzer inKorea is presented. Four species [Agathidium (Agathidium) coreanum Angelini, A. (A.) crassicornePortevin, A. (A.) merkli Angelini, and A. (A.) oblongum Angelini] are recognized. Agathidium (A.)mequignoni Roubal recorded by Angelini is misidentification of A. (A.) crassicorne Portevin.Spermatheca of A. (A.) merkli is illustrated for the first time. A key to the species, diagnoses andillustrations of diagnostic characters are provided.
First record of the beetle family Biphyllidae (Coleoptera) in Korea
박선재,고은선,안기정 한국곤충학회 2012 Entomological Research Vol.42 No.4
The Biphyllidae including four species, Biphyllus lewisi (Reitter), B. marmoratus (Reitter), B. rufopictus (Wollaston) and B. throscoides (Wollaston), are discovered for the first time in Korea. A key, habitus photographs and illustrations of diagnostic characters of the species are presented.