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Sun-Jae Park,Jong-Hyun Shin,Joung-Hu Park,Hee-Jong Jeon 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.6
Energy storage devices are necessary to obtain stable utilization of renewable energy sources. When black-out occurs, distributed renewable power sources with energy storage devices can operate under standalone mode as uninterruptable power supply. This paper proposes a dynamic response analysis with small-signal modeling for the standalone operation of a photovoltaic power generation system that includes a bidirectional charger/discharger with a battery. Furthermore, it proposes a DC-link voltage controller design of the entire power conditioning system, using the storage current under standalone operation. The purpose of this controller is to guarantee the stable operation of the renewable source and the storage subsystem, with the power conversion of a very efficient bypass-type PCS. This paper presents the operating principle and design guidelines of the proposed scheme, along with performance analysis and simulation. Finally, a hardware prototype of 1-kW power conditioning system with an energy storage device is implemented, for experimental verification of the proposed converter system.
Park, Sun-Jae,Shin, Jong-Hyun,Park, Joung-Hu,Jeon, Hee-Jong The Korean Institute of Electrical Engineers 2014 Journal of Electrical Engineering & Technology Vol.9 No.6
Energy storage devices are necessary to obtain stable utilization of renewable energy sources. When black-out occurs, distributed renewable power sources with energy storage devices can operate under standalone mode as uninterruptable power supply. This paper proposes a dynamic response analysis with small-signal modeling for the standalone operation of a photovoltaic power generation system that includes a bidirectional charger/discharger with a battery. Furthermore, it proposes a DC-link voltage controller design of the entire power conditioning system, using the storage current under standalone operation. The purpose of this controller is to guarantee the stable operation of the renewable source and the storage subsystem, with the power conversion of a very efficient bypass-type PCS. This paper presents the operating principle and design guidelines of the proposed scheme, along with performance analysis and simulation. Finally, a hardware prototype of 1-kW power conditioning system with an energy storage device is implemented, for experimental verification of the proposed converter system.
유석형(Yoo, Suk-Hyeong),송진규(Song, Jin-Kyu) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.5
The purpose of this study is to provide the damage detection method using wavelet transformation. The damage location index through the mode shape of damaged structure is formulated theoretically and applied to numerical analysis model of MATLAB. The shacking table test on reduced 3 story shear building is performed and the dynamic response signal is wavelet transformed. The result of damage detection using wavelet transformed signal is compared to that of non wavelet transformed signal to verify the applicability of the wavelet transformation in damage detection.
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.