Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Flywheels"”.
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Self-stabilizing magnetic bearings for flywheels
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.
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Critical speeds of shafts with overhung flywheels
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1944
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Analysis and feedback control of magnetic bearings with reference to flywheel energy storage.
… bearing most suitable for energy storage flywheels is selected and analysed for the purpose of designing feedback control loops. A nonlinear as well as a small signal linear model of the "current driven" magnetic bearing with unlaminated magnetic components is derived. Subsequently …
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Recuperation of Regenerative Braking Energy in Electric Rail Transit Systems
… storage, such as batteries, super capacitors or flywheels. This model has been validated using real measurement data on the 7-Line (Flushing), including:1) speed, current, voltage, power and energy train profiles; and 2) 24-hour interval metering data at substations. The validated model has been …
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A carbon nanotube bearing and Stodola rotor
… sensors, gyroscopes, energy storage flywheels, and turbomachinery for power generation. A fabrication process for the proposed rotor was developed, and is being refined. An isolated vertically aligned MWNT is grown by chemical vapor deposition (CVD), from a nickel catalyst dot defined …
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The Experimental Testing of an Active Magnetic Bearing/Rotor System Undergoing Base Excitation
… submarine propulsion systems, energy storage flywheels, hybrid electric vehicles and a multitude of high performance space applications. Many of the benefits that AMB systems have over conventional bearings makes them ideal for use in these types of vehicular applications. However, these …
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Distributed Energy Storage Systems: Microgrid Application, Market-Based Optimal Operation and Harmonic Analysis
… provides a comparison between batteries and flywheels for the ride-through application in critical microgrid facilities like data centers. In comparison with batteries, the application of FES for power security is new. This limits the availability of experimental data. The software tool …
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A methodology for evaluating and reducing rotor losses, heating, and operational limitations of high-speed flywheel batteries
Flywheel batteries are machines that store kinetic energy in the form of a rotating flywheel. Energy is transferred to and from the flywheel via a motor-generator mounted on the flywheel rotor. For mobile systems in particular, it is important to maximize the stored energy while minimizing the mass …
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Self-bearing motor design & control
… to diameter aspect ratio, such as high speed flywheels for energy storage. We implemented a zero power levitation condition along with passive damping for this system that has several advantages for high speed systems. One of the major advantages of zero power systems is the simple and robust …
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Design of electric vehicle propulsion system incorporating flywheel energy storage
… power batteries, ultracapacitors and high speed flywheels are the potential high power sources that could be used. Out of these, the high speed flywheel in combination with a mechanical transmission is an attractive high power source for the battery electric vehicle due to its favourable …