• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2010년도 추계학술대회 논문집
• /
• pp.299-300
• /
• 2010

• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2008년도 춘계학술대회 논문집
• /
• pp.353-356
• /
• 2008

This paper is proposed that the photovoltaic/fuel cell hybrid generation system for the stand-alone system. In case of the photovoltaic generation system, it depends on the weather condition, irradiation and so on... On the contrary, fuel cell has not this limitation. It can be interactive generation system between photovoltaic and fuel cell. This paper simulated stand-alone co-generation system based on the control of DC link. Moreover, 1[kw] BLDC motor system with speed and hysteresis current controller is used for the proposed system.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
• /
• 제4B권2호
• /
• pp.80-85
• /
• 2004

This paper reports the performance of a CB (Circuit Breaker) and converter for the battery operated Wind-PV (Photovoltaic) system. For this purpose, a fluctuating reduction controller for an electric generation hybrid (wind+PV) system is suggested. The method operates a wind turbine, PV, CB, converter and battery. Integration of wind and PV sources, which are generally complementary, usually reduce the capacity of the battery. Also, CB controls the overvoltage of the generation system. The objective is to control the operation of the converter and the CB and reduce power fluctuation. This paper includes discussion on system performance, power quality, fluctuation and effect of the randomness of the wind.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2005년도 춘계학술대회
• /
• pp.412-415
• /
• 2005

Solar thermal power generation is one of promising and well-proven ways to convert solar energy to electricity. Though it requires high initial cost for system construction and continuous efforts for maintainment. it is more positive in terms of efficiency than other solar power generation technologies. Moreover, solar thermal power generation allows additional benefits of cheap thermal storage and easy hybridization with other fossil fuel-driven power generation. Owing to these benefits, large scale solar thermal power generation technology is expected to be competitive to other commercial technologies in the near future. In this paper an overview on the solar thermal hybrid power generation technology and the state of the art in Korea were briefly introduced.

• International Journal of Aeronautical and Space Sciences
• /
• 제17권2호
• /
• pp.167-174
• /
• 2016

Even though the differential drag type machines of the vertical wind turbines are a bit less efficient than the lift type machines such as Darrieus type machines, they have an advantage of low starting torque. The flapping blade type wind turbine is a specific type of the differential drag machines, and it has no need for orientation as well as quite low starting torque. This work is to develop an innovative 5kW class flapping type vertical wind turbine system which will be applicable to a hybrid power generation system driven by the diesel engine and the wind turbine. The parametric study was carried out to decide an optimum aerodynamic configuration of the wind turbine blade. In order to evaluate the designed blade, the subscale wind tunnel test and the performance test were carried out, and their test results were compared with the analysis results.

• 한국항해항만학회지
• /
• 제33권7호
• /
• pp.501-504
• /
• 2009

There are many difficulties to supply constant power to marine facilities which operate in the sea. Especially, there is a limit to stand alone power supply systems due to the influence of weather conditions. That's why a hybrid power supply system is required to overcome these problems. This paper will describe an Electronic Anti-Fouling System (EAFS) to maximise the power efficiency for a solar - wave hybrid power generation system. A main factor reducing the efficiency of a Wave Energy Converter (WEC) is due to the attachment of aquatic life forms. Therefore the aim of this research is to develop a simulation programme to enable the design of more efficient EAFS for hybrid power generation systems and to provide valuable data for production of more efficient EAFS.

• 조명전기설비학회논문지
• /
• 제20권4호
• /
• pp.43-48
• /
• 2006

풍력 발전 시스템과 태양광 발전 시스템을 상호 보완함으로써 안정적인 전력 공급과 에너지 이용 효율의 향상을 꾀할 수 있는 풍력-태양광 복합발전 시스템에 대한 관심이 고조되고 있다. 본 연구에서는 이러한 복합 발전 시스템을 효율적이고 안정적으로 운용하기 위하여 시스템의 각종 데이터들을 수집, 분석하고 파일로 저장하며 이를 인터넷을 이용하여 원격지에서도 모니터링 할 수 있는 시스템을 구축한다. 교류와 직류의 각종 전압, 전류들을 비롯한 풍속, 조도, 온도 등의 물리량을 측정하기 위하여 여러 형태의 변환기를 사용하였고 신호 조절 회로를 구성하였다. 데이터 수집 보드를 이용하여 컴퓨터로 데이터들을 저어 들였으며, 시스템 운용을 위한 서버 프로그램과 이를 원격지에서 실시간 모니터링 및 저장된 데이터들을 다운로드 할 수 있는 클라이언트 프로그램을 개발하였다. 측정된 데이터를 시간, 기상 등의 여러 조건과 연관하여 분석하였다.

• 한국전자통신학회논문지
• /
• 제18권2호
• /
• pp.269-276
• /
• 2023

본 연구에서는 1시간 이상 체공이 가능하도록 드론에 적용하기 위한 하이브리드 동력시스템을 제안한다. 이 동력시스템은 발전기에서 발생되는 교류를 다이오드 브리지 회로를 통해 직류로 변환하여 배터리를 충전시키고 동력시스템의 높은 제어성능을 얻기 위하여 분리된 셀을 갖는 배터리시스템을 사용한다. 본 논문에서는 부하별 연비와 출력을 분석하였으며, 또한 선정된 발전기의 성능을 연구하였다. 제안된 하이브리드 동력시스템을 장착한 드론은 중량 대비 출력 비율이 0.82로 계산되었으며, 비행시간은 4,179초 동안 비행하였다.

• 조명전기설비학회논문지
• /
• 제24권10호
• /
• pp.106-113
• /
• 2010

In this paper, the empirical study for a hybrid generation system based on wind power which is leading renewable energy was performed. The simulation for the overall operation of the wind generator, diesel generators, monitoring system and a central controller operated in Demonstration Complex was carried out. In addition, the adequacy of the control algorithm was examined through the experiments.

• 한국군사과학기술학회지
• /
• 제14권4호
• /
• pp.732-739
• /
• 2011

A fuel cell/secondary battery hybrid power generation system could extend well beyond the efficiency and interoperability of the conventional diesel generator. The suggested power source system consists of 2.3 kW class PEMFC, 100 Ah lithium polymer battery, and two DC/DC converters by serial connection type. It was known that interoperability of sub-systems is the key factor for stable and optimal control of the hybrid power generation system. The modeling and simulation methods have been proposed to reduce the number of configurations and performance tests for components selection and select the optimized control condition of the power generation system. The control model for power source system is implemented based on the empirical formulation and carried out in the Matlab/Simulink environment. The results show that the simulation can be used to establish the algorism of prototype and increase the durability of the power source system.