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Power control strategies of a DC-coupled hybrid power system for a building microgrid
Cho, Jea-Hoon,Hong, Won-Pyo The Korean Institute of IIIuminating and Electrica 2011 조명·전기설비학회논문지 Vol.25 No.3
In this paper, a DC-coupled photovoltaic (PV), fuel cell (FC) and ultracapacitor hybrid power system is studied for building microgrid. In this proposed system, the PV system provides electric energy to the electrolyzer to produce hydrogen for future use and transfer to the load side, if possible. Whenever the PV system cannot completely meet load demands, the FC system provides power to meet the remaining load. The main weak point of the FC system is slow dynamics, because the power slope is limited to prevent fuel starvation problems, improve performance and increase lifetime. A power management and control algorithm is proposed for the hybrid power system by taking into account the characteristics of each power source. The main works of this paper are hybridization of alternate energy sources with FC systems using long and short storage strategies to build an autonomous system with pragmatic design, and a dynamic model proposed for a PV/FC/UC bank hybrid power generation system. A simulation model for the hybrid power system has been developed using Matlab/Simulink, SimPowerSystems and Matlab/Stateflow. The system performance under the different scenarios has been verified by carrying out simulation studies using a practical load demand profile, hybrid power management and control, and real weather data.
Jea-Hoon Cho,Won-Pyo Hong 한국조명·전기설비학회 2016 조명·전기설비학회논문지 Vol.30 No.7
Considering the environmental concerns, limitation of natural resources and power demand pressure, there is a great need to involve the distributed energy resource (DER) which can be operated as interconnected or as stand-alone mode from the main power grid. This paper proposes an application of Matlab/Stateflow-based MAS for energy management and control in a hybrid energy system including diesel generation system. An overall power management strategy is designed for the proposed system to manage power flows among different energy sources and the storage unit in the system. A simulation model for the hybrid energy system was developed using Matlab/Simulink and SimPowerSystems. The system performance under the different scenarios was verified by carrying out simulation studies using practical load demand profile and real weather data.
Cho, Jea-Hoon,Hong, Won-Pyo The Korean Institute of IIIuminating and Electrica 2016 조명·전기설비학회논문지 Vol.30 No.7
Considering the environmental concerns, limitation of natural resources and power demand pressure, there is a great need to involve the distributed energy resource (DER) which can be operated as interconnected or as stand-alone mode from the main power grid. This paper proposes an application of Matlab/Stateflow-based MAS for energy management and control in a hybrid energy system including diesel generation system. An overall power management strategy is designed for the proposed system to manage power flows among different energy sources and the storage unit in the system. A simulation model for the hybrid energy system was developed using Matlab/Simulink and SimPowerSystems. The system performance under the different scenarios was verified by carrying out simulation studies using practical load demand profile and real weather data.
Power control strategies of a DC-coupled hybrid power system for a building microgrid
Jea-Hoon Cho,Won-Pyo Hong 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.3
In this paper, a DC-coupled photovoltaic (PV), fuel cell (FC) and ultracapacitor hybrid power system is studied for building microgrid. In this proposed system, the PV system provides electric energy to the electrolyzer to produce hydrogen for future use and transfer to the load side, if possible. Whenever the PV system cannot completely meet load demands, the FC system provides power to meet the remaining load. The main weak point of the FC system is slow dynamics, because the power slope is limited to prevent fuel starvation problems, improve performance and increase lifetime. A power management and control algorithm is proposed for the hybrid power system by taking into account the characteristics of each power source. The main works of this paper are hybridization of alternate energy sources with FC systems using long and short storage strategies to build an autonomous system with pragmatic design, and a dynamic model proposed for a PV/FC/UC bank hybrid power generation system. A simulation model for the hybrid power system has been developed using Matlab/Simulink, SimPowerSystems and Matlab/Stateflow. The system performance under the different scenarios has been verified by carrying out simulation studies using a practical load demand profile, hybrid power management and control, and real weather data.
조재훈(Jea-Hoon Cho),홍원표(Won-Pyo Hong) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
This paper proposes a dynamic modeling and power management system for stand-alone solar hydrogen systems. PEMFC and PV systems is accurately modeled and also the power management system and controller of converter are configured. The model evaluation is performed by simulation of solar-hydrogen systems.
조재훈(Jea-Hoon Cho),홍원표(Won-Pyo Hong) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.12
마이크로그리드는 전력시스템의 계획 및 실시간 운영에 있어서 매우 큰 영향을 미치며 중요한 역할을 할 것으로 판단된다. 따라서 본 연구에서는 빌딩의 마이크로그이드의 중요한 마이크로소오스인 마이크로터빈 발전시스템의 Matlab/Simulink 모델과 전압-주파수제어기를 개발하였다. 또한 부하에 독립적으로 전원을 공급하기 위한 전력시스템을 구성, 모의를 통하여 MTG시스템의 특성을 분석하였다. Distributed Generation (DG) is predicted to play a important role in electric power system in the near future. insertion of DG system into existing distribution network has great impact on real-time system operation and planning. It is widely accepted that micro turbine generation (MTG) systems are currently attracting lot of attention to meet customers need in the distributed power generation market. In order to investigate the performance of MT generation systems, their efficient modeling is required. This paper presents the modeling and simulation of a MT generation system suitable for stand-alone operation. The system comprises of a permanent magnet synchronous generator driven by a MT. A brief description of the overall system is given, and mathematical models for the MT and permanent magnet synchronous generator are presented. Also, the use of power electronics in conditioning the power output of the generating system is demonstrated. Simulation studies with MATLAB/Simulink have been carried out in stand-alone operation mode of a DG system.
고분자연료전지(PEMFC)/SCB의 동적 Matlab/Simulink 모델링 및 특성해석
조재훈(Jea-Hoon Cho),홍원표(Won-Won Hong) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.9월
This paper proposes a dynamic modeling of PEMFC(Polymer Electrolyte Membrane Fuel Cell)/SCB hybrid energy system and the characteristics is investigated by simulation tool of Matlab/ Simulink and SimPowerSystem. This study shows that SCB play an essential role in reducing power fluctuation at DC bus and the fast response in hybrid energy system Hybridization process of FCs can be configured by WT and PV plants.
고분자연료전지(PEMFC)의 Matlab/Simulink 모델링 및 제어
조재훈(Jea-Hoon Cho),홍원표 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
This paper proposes a dynamic modeling of PEMFC(Polymer Electrolyte Membrane Fuel Cell) and the characteristics is investigated by simulation tool of Matlab/Simulink. This study is a partial results of PV/FC/SCB/Electrolyzer hybrid energy system hybridization Proceses of FCs can configure WT and PV plants