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Design of an LLC Resonant Converter for Driving Multiple LED Lights Using Current Balancing of Capacitor and Transformer
Han, Jae-Hyun; Lim, Young-Cheol - In: Energies 8 (2015) 3, pp. 2125-2144
In this study, to achieve the constant current drive and brightness control without a separate pulse width modulation (PWM) converter, a single converter is designed and verified by experiment under the condition of a multiple LED light load with different output voltage (Vf) characteristics. In...
Persistent link: https://www.econbiz.de/10011206267
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Load Frequency Control in Isolated Micro-Grids with Electrical Vehicles Based on Multivariable Generalized Predictive Theory
Yang, Jun; Zeng, Zhili; Tang, Yufei; Yan, Jun; He, Haibo; … - In: Energies 8 (2015) 3, pp. 2145-2164
In power systems, although the inertia energy in power sources can partly cover power unbalances caused by load disturbance or renewable energy fluctuation, it is still hard to maintain the frequency deviation within acceptable ranges. However, with the vehicle-to-grid (V2G) technique, electric...
Persistent link: https://www.econbiz.de/10011206268
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Modelling of a Solid Oxide Fuel Cell CHP System Coupled with a Hot Water Storage Tank for a Single Household
Liso, Vincenzo; Zhao, Yingru; Yang, Wenyuan; Nielsen, … - In: Energies 8 (2015) 3, pp. 2211-2229
In this paper a solid oxide fuel cell (SOFC) system for cogeneration of heat and power integrated with a stratified heat storage tank is studied. The use of a storage tank with thermal stratification allows one to increase the annual operating hours of CHP: heat can be produced when the request...
Persistent link: https://www.econbiz.de/10011206960
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Modeling Innovative Power Take-Off Based on Double-Acting Hydraulic Cylinders Array for Wave Energy Conversion
Antolín-Urbaneja, Juan Carlos; Cortés, Alain; … - In: Energies 8 (2015) 3, pp. 2230-2267
One of the key systems of a Wave Energy Converter for extraction of wave energy is the Power Take-Off (PTO) device. This device transforms the mechanical energy of a moving body into electrical energy. This paper describes the model of an innovative PTO based on independently activated...
Persistent link: https://www.econbiz.de/10011206961
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The Impact of a Mild Sub-Critical Hydrothermal Carbonization Pretreatment on <i>Umbila</i> Wood. A Mass and Energy Balance Perspective
Cuvilas, Carlos Alberto; Kantarelis, Efthymios; Yang, … - In: Energies 8 (2015) 3, pp. 2165-2175
Over the last years, the pretreatment of biomass as a source of energy has become one of the most important steps of biomass conversion. In this work the effect of a mild subcritical hydrothermal carbonization of a tropical woody biomass was studied. Results indicate considerable change in...
Persistent link: https://www.econbiz.de/10011206962
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Experimental Analysis of Cool Traditional Solar Shading Systems for Residential Buildings
Pisello, Anna Laura - In: Energies 8 (2015) 3, pp. 2197-2210
In recent years there has been a growing interest in the development and thermal-energy analysis of passive solutions for reducing building cooling needs and thus improving indoor thermal comfort conditions. In this view, several studies were carried out about cool roofs and cool coatings,...
Persistent link: https://www.econbiz.de/10011206963
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Estimation of CO<sub>2</sub> Transport Costs in South Korea Using a Techno-Economic Model
Kang, Kwangu; Seo, Youngkyun; Chang, Daejun; Kang, Seong-Gil - In: Energies 8 (2015) 3, pp. 2176-2196
In this study, a techno–economic model was used to calculate the costs of CO<sub>2</sub> transport and specify the … stage were determined from engineering and economic viewpoints, and the corresponding specifications and equipment costs … were calculated. The transport costs for a 1 MtCO<sub>2</sub>/year transport rate were estimated to be US$33/tCO<sub>2</sub …
Persistent link: https://www.econbiz.de/10011206964
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The Electric Energy-Water Nexus : Managing the Seasonal Linkages of Fresh Water Use in Energy Sector for Sustainable Future
Sri, Perini Praveena - East Asian Bureau of Economic Research (EABER) - 2010
The fast growing demand for fresh water-coupled with the need to protect the environment has made many areas of India and the rest of the World vulnerable to water shortages for various uses of the economy. As they interact with Electricity Industry, water availability is critical to power...
Persistent link: https://www.econbiz.de/10009364024
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Climate Change and Energy Security - Obama’s Historic Challenge
Takagi, Yuji - East Asian Bureau of Economic Research (EABER) - 2009
It was a long 35 years ago that Richard Nixon proclaimed, Our national goal should be to meet our own energy needs without depending on any foreign sources. Even now that goal of energy security remains elusive although it has occupied an attention almost continuously. Under the sharp increase...
Persistent link: https://www.econbiz.de/10009364025
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Fast Coordinated Control of DFIG Wind Turbine Generators for Low and High Voltage Ride-Through
Wang, Yun; Wu, Qiuwei; Xu, Honghua; Guo, Qinglai; Sun, … - In: Energies 7 (2014) 7, pp. 4140-4156
This paper presents a fast coordinated control scheme of the rotor side converter (RSC), the Direct Current (DC) chopper and the grid side converter (GSC) of doubly fed induction generator (DFIG) wind turbine generators (WTGs) to improve the low voltage ride through (LVRT) and high voltage ride...
Persistent link: https://www.econbiz.de/10010789257