Results 31 to 40 of about 14,273 (209)
Electrical Energy Storage Using Flywheels [PDF]
MRS Bulletin, 2008 Flywheel energy storage systems use the kinetic energy stored in a rotor; they are often referred to as mechanical batteries. On charging, the fywheel is accelerated, and on power generation, it is slowed. Because the energy stored is proportional to the square of the speed, very high speeds are used, typically 20,000–100,000 revolutions per minute ...
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Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Conductive pitch‐based porous carbon materials were synthesized and systematically investigated as high‐performance electrode materials for supercapacitors. Petroleum‐derived pitch was thermally treated and chemically activated using KOH and NaOH at different pitch: activating agent molar ratio (1:1, 1:2, and 1:4) to optimize the pore ...
Sang Wan Seo +3 more
wiley +1 more source
MachinesThis article aims to propose a highly reliable permanent magnet synchronous machine (PMSM) for flywheel energy-storage systems. Flywheel energy-storage systems are large-capacity energy storage technologies suitable for the short-term storage of ...
Xinjian Jiang +3 more
doaj +1 more source
High‐Energy‐Density Redox Flow Batteries: Mechanisms, Design Strategies, and Recent Progress
Chemistry – A European Journal, EarlyView.ABSTRACT The inherent intermittency of energy sources such as solar and wind power hinders the transition to renewable energy, necessitating advanced energy storage solutions. Enhancing energy density is crucial for lowering system costs and enabling large‐scale deployment.
Xiaolian Zhao +8 more
wiley +1 more source
Investigation of stress-strain state in the flywheel and estimation their specific energy capacity
MATEC Web of Conferences, 2017 In this paper, the specific energy intensity of the kinetic energy storage devices, including the flywheel-casing scheme in the potential field, is investigated.
Berezhnoi Dmitri V. +2 more
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Applied Sciences, 2021 High-velocity and long-lifetime operating conditions of modern high-speed energy storage flywheel rotors may create the necessary conditions for failure modes not included in current quasi-static failure analyses.
Miles Skinner, Pierre Mertiny
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A summary of the 1983 Integrated Flywheel Technology Workshop [PDF]
, 1984 The use of flywheels to perform the functions of attitude control and/or energy storage on a variety of space missions was studied. Integrated Flywheel Technology was discussed.
Keckler, C. R.
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Predictive Optimal Matrix Converter Control for a Dynamic Voltage Restorer with Flywheel Energy Storage [PDF]
, 2009 This paper presents a predictive optimal matrix converter controller for a flywheel energy storage system used as Dynamic Voltage Restorer (DVR). The flywheel energy storage device is based on a steel seamless tube mounted as a vertical axis flywheel to ...
Gamboa, Paulo +3 more
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Actuation Strategies for Underwater Jet‐Propelled Soft Robots
Journal of Field Robotics, EarlyView.ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone +3 more
wiley +1 more source
Energy storage apparatus [PDF]
, 1978 A high efficiency, flywheel type energy storage device which comprises an electronically commutated d.c. motor/generator unit having a massive flywheel rotor magnetically suspended around a ring shaped stator is presented.
Evans, H. E., Studer, P. A.
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