By Roman Targosz / Published on Wed, 2010-08-11 11:43
IEEE - Institute of Electrical and Electronics Engineers and PES - Power and Energy Society
IEEE is the largest non-profit technical association with nearly 400,000 members in almost 200 countries.
IEEE has about 30% share in world’s technical literature on electrical engineering.
PES, Power and Energy Society is the third largest society in IEEE (39 of them all together) with the largest number of developed and under-development standards of about 400.
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By Roman Targosz / Published on Sun, 2010-05-30 23:55
The fifth course in the comprehensive programme on power quality covers the subject of distributed energy sources in the context of power quality and energy storage systems.
The knowledge acquired during the course should be sufficient for:
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By Fernando Nuno / Published on Tue, 2010-04-20 10:13
Dispatchability, thermal energy storage and hybridisation
Thermal storage for CSP plants:
- concept
- functions of the thermal energy storage system (tes)
- classification of tes systems
- state of the art
- future developments
Hybridisation of CSP plants:
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By Bruno De Wachter / Published on Tue, 2009-10-06 05:30
Focus on PV, CCS, nuclear, hydrogen, biomass, and energy storage
In August, U.S. Energy Secretary Steven Chu announced the delivery of $377 million in funding for 46 new Energy Frontier Research Centres. The centres will be hosted by universities, national laboratories, non-profit organisations, and private companies. The research domains that were chosen offer a good sampling of those technologies the US Department of Energy (DOE) sees as potentially important in the energy landscape of the future. The funded projects are focussed on:
- Improving the efficiency of photovoltaic systems; with particular projects dedicated to hybrid inorganic/organic PV cells and nanometre-sized PV cells
- Advanced nuclear techniques
- Carbon capture and geological storage (CCS)
- Hydrogen, including the production of hydrogen as well as hydrogen fuel cells
- Biomass, including energy-rich plants and the conversion of biomass into chemicals and fuels
- Energy storage systems
- Superconductivity (1 project)
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By HDK / Published on Mon, 2009-09-21 14:04
This paper extends a broad functional category approach for the study of technological capability progress recently developed and applied to information technology to a second key case—that of energy based technologies. The approach is applied to the same three functional operations—storage, transportation and transformation—that were used for information technology by first building a 100 plus year database for each of the three energy-based functional categories.
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By Hans De Keulenaer / Published on Wed, 2009-09-09 11:54
This document is an overall report of the seminar “Electricity in the next decade” regarding “Low carbon electricity systems” jointly organised by KEMA, ECI and Leonardo ENERGY.
Next to the topics presented during the first event, a few additional topics have been added in order to create a white paper and a more complete picture on the theme “Electricity in the next decade”.
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By HDK / Published on Tue, 2009-08-25 08:37
Power electronics is an innovative and expanding area in electrical engineering. Recent advances in high power devices permit the control and flow of electric energy efficiently. The digital nature of power switching devices makes the control of electric power switching circuits convenient with the use of digital signal processors. Power electronics has widespread applications in today’s industry such as in power supplies, variable speed drives, automotives, marine, etc.
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By HDK / Published on Fri, 2009-08-21 19:52
A new paper from Carnegie Mellon Electricity Industry Center
We examine the potential economic implications of using vehicle batteries to store grid electricity generated at off-peak hours for off-vehicle use during peak hours. Hourly electricity prices in three U.S. cities were used to arrive at daily profit values, while the economic losses associated with battery degradation were calculated based on data collected from A123 Systems LiFePO4/Graphite cells tested under combined driving and off-vehicle electricity utilisation.
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By Hans De Keulenaer / Published on Mon, 2009-07-13 14:41
Adding large-scale energy storage to the energy system can support the system integration of large volumes of variable energy sources like wind power and solar-PV and/or so-called must-run power plants. Storage can be attractive from different viewpoints, depending on the core business of a company:
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By HDK / Published on Fri, 2009-05-29 08:41
Date & Venue: June 16, 2009 - Arnhem
A new annual congress has been established with the intention of exchanging knowledge on low carbon electricity systems. The congress invites the participation of professionals interested in developing their vision of low carbon electricity, including policy makers, utility planning managers, consultants, energy industry representatives, research journalists and academics. Participants can expect a realistic, market-oriented approach with academic validation.
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By David Chapman / Published on Tue, 2009-05-19 12:58
Reader Question
I would like to understand, how the power conditioner rating to the actual load determines the ride through capability for the power conditioner.
Literature from lpqi states that the power conditioner should be oversized by 2.5 times that of the load. Increasing the size makes the power conditioner less efficient. What is the ride through benefit as compared to using a power conditioner that is sized to the load.
Regards, Theo
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By Hans De Keulenaer / Published on Wed, 2009-02-25 17:33
The use of electronic loads is increasing very fast. The gap between demand and the short generation is also increasing very fast. These have made the power quality, reliability and stability a critical issue. Further, there is continuous thrust on optimal utilization of the non-conventional energy resources due to price rise of oil and environmental issues, in addition to the fact that the central power station with improved quality of power has made it necessary to use the energy storage technology.
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By Hans De Keulenaer / Published on Thu, 2008-11-27 20:04
More than half of the primary energy consumption is for the generation of heat. Thermal energy storage is of key importance for energy reduction technologies and for increasing the share of renewables in the thermal energy consumption.
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By Hans De Keulenaer / Published on Thu, 2008-09-04 09:09
This paper presents a hybrid on-line UPS system (H-UPS). The system is based on an on-line (double conversion) UPS, consisting of two controlled energy storage systems. The first one is a static energy storage system based on supercapacitor bank. The second energy source is adjustable speed generating system supplying DC link voltage. A control concept of the UPS operation, according short and long failure of the supply utility voltage is developed. The 5 kW H-UPS is designed, built and tested. The control unit is built using DS P processor based on Shark from Analog Devices.
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By Bruno De Wachter / Published on Thu, 2008-06-05 05:30
A recent study by Clean Edge
The clean energy market is booming. According to the report 'Clean Energy Trends in 2008' by Clean Edge, a California clean technologies research and publishing firm, the market for solar energy, wind energy, biofuels, and fuel cells experienced a 40% increase in revenue growth in 2007. Cumulative global wind capacity now exceeds 94,000 MW. Solar capacity is more than 10,000 MW and biofuel production is approximately 15 billion gallons per year. This rapid growth leads to economies of scale and cost reductions, promising even faster growth in the future.
Challenges to overcome
However, Clean Edge also notes a few important challenges that must be overcome in the upcoming years:
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By Hans De Keulenaer / Published on Tue, 2008-05-06 14:30
The electricity is a basic need for functioning of modern society. In the deregulated electricity market, delivering quality power to the clients is a challenge for the utilities. In this paper, a “hybrid grid” is discussed that consists of centralized generations and localized distributed generations which may be comprised of small-scale conventional and sustainable sources. Energy storage option is also integrated in the hybrid-grid. Simulations are done on a test network, using “Power-Factory” software.
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