The Experts below are selected from a list of 3357 Experts worldwide ranked by ideXlab platform

Richard Zbeda - One of the best experts on this subject based on the ideXlab platform.

  • IEEE Congress on Evolutionary Computation - Learning area coverage for a self-sufficient colony robot
    2009 IEEE Congress on Evolutionary Computation, 2009
    Co-Authors: Gary B. Parker, Richard Zbeda
    Abstract:

    It is advantageous for colony robots to be autonomous and self-sufficient. This requires them to perform their duties while maintaining enough energy to operate. Previously, we reported the equipping of Power Storage for legged robots with high capacitance capacitors, the configuration of one of these robots to effectively use its Power Storage in a colony recharging system, and the learning of a control program that enabled the robot to navigate to a charging station in simulation. In this work, we report the learning of a control program that allowed the simulated robot to perform area coverage in a self-sufficient framework that made available the best pre-learned navigation behavior module.

  • SMC - Learning navigation for recharging a self-sufficient colony robot
    2007 IEEE International Conference on Systems Man and Cybernetics, 2007
    Co-Authors: Gary B. Parker, Richard Zbeda
    Abstract:

    It is desirable that colony robots be autonomous and self-sufficient, which requires that they can perform their duties while maintaining enough energy to operate. In previous work, we reported the equipping of legged robots with high capacitance capacitors for Power Storage and the configuration of one of these robots to make practical use of its Power Storage in a colony recharging system. Research reported in this paper involves the learning of a control program that allows this robot to navigate to a charging station. The viability of the configuration and the learned control program were verified by observing the actual robot as it operated using the best of the solutions produced in simulation.

Gary B. Parker - One of the best experts on this subject based on the ideXlab platform.

  • IEEE Congress on Evolutionary Computation - Learning area coverage for a self-sufficient colony robot
    2009 IEEE Congress on Evolutionary Computation, 2009
    Co-Authors: Gary B. Parker, Richard Zbeda
    Abstract:

    It is advantageous for colony robots to be autonomous and self-sufficient. This requires them to perform their duties while maintaining enough energy to operate. Previously, we reported the equipping of Power Storage for legged robots with high capacitance capacitors, the configuration of one of these robots to effectively use its Power Storage in a colony recharging system, and the learning of a control program that enabled the robot to navigate to a charging station in simulation. In this work, we report the learning of a control program that allowed the simulated robot to perform area coverage in a self-sufficient framework that made available the best pre-learned navigation behavior module.

  • SMC - Learning navigation for recharging a self-sufficient colony robot
    2007 IEEE International Conference on Systems Man and Cybernetics, 2007
    Co-Authors: Gary B. Parker, Richard Zbeda
    Abstract:

    It is desirable that colony robots be autonomous and self-sufficient, which requires that they can perform their duties while maintaining enough energy to operate. In previous work, we reported the equipping of legged robots with high capacitance capacitors for Power Storage and the configuration of one of these robots to make practical use of its Power Storage in a colony recharging system. Research reported in this paper involves the learning of a control program that allows this robot to navigate to a charging station. The viability of the configuration and the learned control program were verified by observing the actual robot as it operated using the best of the solutions produced in simulation.

Ahmad Arabkoohsar - One of the best experts on this subject based on the ideXlab platform.

  • Off-design operation analysis of air-based high-temperature heat and Power Storage
    Energy, 2020
    Co-Authors: Wisam K. Hussam, Hamid Reza Rahbari, Ahmad Arabkoohsar
    Abstract:

    Abstract High-temperature heat and Power Storage is a new mechanical energy Storage technology which is capable of cogenerating heat and electricity at high overall efficiency. The technology has received much attention from the leading European energy companies and research institutes. Although a pilot plant of this system has already been built up and is being tested, the technology is still in developing stage and there is much to be found out about the details of the system operation and most likely more advanced configurations of that to emerge. This study presents a detailed energy analysis of the air-based design of the high-temperature heat and Power Storage technology with a certain focus on the effects of the partial-load operation of the system on its energetic performance. For this, an air-based design of the technology is modeled and thermodynamically analyzed for operation loads from 10% to 100%. The results show that, at nominal load, the system offers a Power-to-Power efficiency of about 28% and Power-to-heat efficiency of 63%. These efficiency values change slightly when the load drops to 80%, but significantly fall when the load decreases further so that the Power-to-Power efficiency of the system at 30% operational load is zero.

  • Combination of air-based high-temperature heat and Power Storage system with an Organic Rankine Cycle for an improved electricity efficiency
    Applied Thermal Engineering, 2020
    Co-Authors: Ahmad Arabkoohsar
    Abstract:

    Abstract High-temperature heat and Power Storage technology is an electricity Storage concepts recently proposed and being investigated. This technology stores electricity as high-temperature heat and then, as needed, reclaims it to co-generate heat and electricity via a conventional Power production method. Based on the Power block design, this technology may come in either a ‘steam-based’ or an ‘air-based’ configuration. Regardless of the configuration, this technology offers a very high overall energy efficiency (over 80%) but low Power-to-Power efficiency (about 32%). Relying on the fact that electricity is going to be certainly a more pricy and critical energy kind than heat in the future, the current study suggests combining the air-based high-temperature heat and Power Storage and an Organic Rankine Cycle together to improve the electricity production efficiency of this Storage technology. The proposed combined system is thermodynamically analyzed and compared to the conventional configuration of that. The results show that this combination results in a significantly enhanced electricity efficiency, from 32% in the conventional configuration of the system to 43% in the proposed combined cycle.

  • Design and analysis of the novel concept of high temperature heat and Power Storage
    Energy, 2017
    Co-Authors: Ahmad Arabkoohsar, Gorm B. Andresen
    Abstract:

    A major portion of the electricity demand in Denmark is provided by wind farms. As wind Power fluctuates sharply, there may be either surplus Power or electricity deficit relative to the local demand. Thus, storing the surplus electricity and reclaiming it in demand times can increase the Power plant incomes and reliability. On the other hand, as Denmark is one of the countries in which energy consumers are supplied by district heating, the demand for efficient and reliable heat production systems is also high. In this work, a novel and efficient energy Storage system capable of providing both heat and electricity is designed and analyzed. This system is a smart combination of a thermal energy Storage system and a gas turbine cycle without any combustion chamber. In order to have an optimal configuration, the system is designed based on thermodynamics criteria and net economic revenue. It is shown that the designed system may present an overall energy efficiency of about 90% and an electricity efficiency of approximately 35%. The economic assessment indicates that this innovative high temperature heat and Power Storage system, even taking into account conservative electricity and heat prices, is very profitable.

Tatsuo Horiba - One of the best experts on this subject based on the ideXlab platform.

  • Large-format lithium-ion batteries for electric Power Storage
    Journal of Power Sources, 2011
    Co-Authors: H. Haruna, Tatsuo Horiba, S. Itoh, Eiji Seki, Kazushige Kohno
    Abstract:

    Abstract We have been developing lithium-ion batteries for electric Power Storage and have chosen cell chemistries having a high energy density and long life. The cell chemistry consisted of a positive electrode containing a lithium–manganese spinel or a mixture of it with a layered-manganese-based material, and a negative electrode containing a hard carbon. The 8 Ah-class cells consisting of these cell chemistries showed that their extrapolated lives were long enough to withstand a cycling load for 10 years of use. A comparison of the cycle life data with the Storage life data suggested the possibility to separate the capacity fading caused only by the Storage and that only by the cycling, which is expected to be the basis of a prediction method for the calendar life. However, much work still needs to be done to achieve it. We also manufactured two types of 100 Ah-class cells as an experiment based on the results for the 8 Ah-class cells. They showed specific energies of 100 Wh kg−1 and 106 Wh kg−1.

  • Large-scale development of lithium batteries for electric vehicles and electric Power Storage applications
    Journal of Power Sources, 1999
    Co-Authors: Kohki Tamura, Tatsuo Horiba
    Abstract:

    Abstract In Japan there was a dramatic increase in the production of lithium secondary batteries which reached a value of 210 billion yen in 1997. There are signs that this trend is increasing. These lithium batteries are presently used as small portable Power sources. For these uses there has been a broadening in the research and development of lithium batteries. At the same time, advances in the research of large type lithium batteries for electric vehicles and dispersed-type electric Power Storage systems have been conducted on a grand scale by Japanese universities, government research laboratories and private companies. The level of activity in the research and development of lithium batteries in Japan is apparent by the state of related patent applications and number of papers presented at meetings held in Japan. LIBES is at the center of the research and development into large-type lithium batteries in Japan. Hitachi, and Shin-Kobe Electric Machinery, as members of LIBES, are carrying out the research and development of large-type lithium batteries for electric-Power Storage. In FY1997, the 250 W h cells, made of 10 wt.% silver–graphite anodes and spinel-type manganese oxide cathodes, which were connected together and stacked in a series of eight to make a 2 kW h module, produced desirable results and showed the prospects for good safety.

Constantin Ciocanel - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical and mechanical characterization of a PEG based solid polymer electrolyte for Power Storage composites (Conference Presentation)
    Behavior and Mechanics of Multifunctional Materials and Composites 2017, 2017
    Co-Authors: Constantin Ciocanel, Cindy C Browder, Gerrick E. Lindberg
    Abstract:

    Development of multifunctional materials with Power Storage and structural capabilities poses many challenges, of which the formulation of a solid polymer electrolyte (SPE) with adhesive like properties may be the greatest. This is due to the targeted properties of the SPE, i.e. high ionic mobility combined with high mechanical strength and good adherence to multiple substrates, which are all mostly divergent. To date, gel electrolytes have been used to prove the feasibility of Power Storage flexible materials. However, mechanically, these materials do not exhibit notable properties. This presentation will discuss the development process and electrochemical and mechanical properties of a PEG based SPE and highlight the remaining challenges to be surmounted for the successful development of a true structural composite material with Power Storage capabilities.

  • Design of a multifunctional composite material with enhanced structural and Power Storage capability
    Behavior and Mechanics of Multifunctional Materials and Composites 2014, 2014
    Co-Authors: S. Doyle-lawrence, Cindy C Browder, K. Carroll, R. Guiel, Constantin Ciocanel
    Abstract:

    The paper presents results associated with the development of a carbon fiber weave based composite material with Power Storage capability. In the simplest layup, material coupons (commonly 75mm by 75mm) are made in a single layer configuration providing modest gains in terms of multifunctionality, i.e. the Power Storage capability is not significant compared to the overall loss in mechanical strength of the material, due to the changes in formulation dictated by the added Power Storage functionality. However, the multifunctional performance can be enhanced by stacking multiple single layer material coupons on top of each other, in various configurations, to achieve enhanced mechanical and/or electrical properties for the material. Four layup methods have been explored, and the results of the electromechanical characterization of these layups are presented and discussed here, in connection with the properties of the single layer coupons.

  • The challenges of achieving good electrical and mechanical properties when making structural supercapacitors
    Behavior and Mechanics of Multifunctional Materials and Composites 2013, 2013
    Co-Authors: Constantin Ciocanel, Cindy C Browder, C. Simpson, R. Colburn
    Abstract:

    The paper presents results associated with the electro-mechanical characterization of a composite material with Power Storage capability, identified throughout the paper as a structural supercapacitor. The structural supercapacitor uses electrodes made of carbon fiber weave, a separator made of Celgard 3501, and a solid PEG-based polymer blend electrolyte. To be a viable structural supercapacitor, the material has to have good mechanical and Power Storage/electrical properties. The literature in this area is inconsistent on which electrical properties are evaluated, and how those properties are assessed. In general, measurements of capacitance or specific capacitance (i.e. capacitance per unit area or per unit volume) are made, without considering other properties such as leakage resistance and equivalent series resistance of the supercapacitor. This paper highlights the significance of these additional electrical properties, discusses the fluctuation of capacitance over time, and proposes methods to improve the stability of the material’s electric properties over time.

  • Structural Load Bearing Supercapacitors Using a PEGDGE Based Solid Polymer Electrolyte Matrix
    ASME 2011 Conference on Smart Materials Adaptive Structures and Intelligent Systems Volume 1, 2011
    Co-Authors: Tanya M. Gallagher, Constantin Ciocanel, Cindy C Browder
    Abstract:

    The interest in developing multifunctional materials has greatly increased in the last decade. Power Storage composites are just one class of multifunctional materials that has the potential to lead to significant size and weight reduction. Many electronic devices (i.e. laptops, cellphones, iPods, etc.) and mechanical systems that require or generate electrical Power during operation (i.e., hybrid or fully electric cars, wind turbines, airplanes, etc.) could benefit substantially from these materials. While several types of Power Storage structural composites have been developed to date, i.e. composite batteries and fuel cells, structural load bearing super- and ultra-capacitors appear to be the most promising ones. To date, two classes of structural capacitors have been explored: dielectric and solid electrolyte capacitors; the former are suitable for applications where very high voltage bursts of electrical energy are needed, while the latter are suitable for applications where lower voltage levels are required (i.e. more general Power Storage/delivery applications). This paper describes the efforts made to develop and characterize electro-mechanically structural supercapacitors. The load-bearing supercapacitors discussed here have been made with carbon fiber weave electrodes and separators of various materials, glued together with a solid polymer electrolyte (SPE) matrix. Electrochemical characterization reported specific capacitances as high as 2.9μF/mm3 and energy densities as high as 4.9 kJ/g.

  • State of the Art in Power Storage Composites
    Volume 3: Design and Manufacturing Parts A and B, 2010
    Co-Authors: Tanya M. Gallagher, Constantin Ciocanel
    Abstract:

    This paper presents a review on the latest developments in Power Storage composites. During the last decade, the need for multifunctional materials has grown steadily and has become a major priority as the demand for weight and, consequently, fuel consumption reduction, in ground and aerial vehicles, became critical. Accordingly, attempts have been made to develop structural materials that could incorporate specific devices, which would perform as sensors, for structural health monitoring, as actuators, for structural morphing capabilities, or as Power harvesters, for supplementing existing Power sources. Attempts have also been made to develop Power Storage composites, by embedding fuel cells, thin film lithium batteries, or capacitors in their structures. While it has been proven that these technologies are viable, the resulting structural materials exhibit significantly lower structural properties. To date, the most promising approach in Power Storage composites seems to be the development of structural load carrying capacitors. Such composites have the potential to provide good structural and electrical characteristics and can be easily manufactured.Copyright © 2010 by ASME