Design and Analysis of a Unique Energy Storage Flywheel System—An Integrated Flywheel, Motor/Generator, and Magnetic Bearing ConfigurationSource: Journal of Engineering for Gas Turbines and Power:;2015:;volume( 137 ):;issue: 004::page 42505DOI: 10.1115/1.4028575Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Energy storage is becoming increasingly important with the rising need to accommodate the energy needs of a greater population. Energy storage is especially important with intermittent sources such as solar and wind. Flywheel energy storage systems store kinetic energy by constantly spinning a compact rotor in a lowfriction environment. When shortterm backup power is required as a result of utility power loss or fluctuations, the rotor’s inertia allows it to continue spinning and the resulting kinetic energy is converted to electricity. Unlike fossilfuel power plants and batteries, the flywheel based energy storage systems do not emit any harmful byproducts during their operation and have attracted interest recently. A typical flywheel system is comprised of an energy storage rotor, a motorgenerator system, bearings, power electronics, controls, and a containment housing. Conventional outer flywheel designs have a large diameter energy storage rotor attached to a smaller diameter section which is used as a motor/generator. The cost to build and maintain such a system can be substantial. This paper presents a unique concept design for a 1 kWh insideout integrated flywheel energy storage system. The flywheel operates at a nominal speed of 40,000 rpm. This design can potentially scale up for higher energy storage capacity. It uses a single composite rotor to perform the functions of energy storage. The flywheel design incorporates a fiveaxis active magnetic bearing system. The flywheel is also encased in a double layered housing to ensure safe operation. Insulatedgate bipolar transistor (IBGT) based power electronics are adopted as well. The design targets cost savings from reduced material and manufacturing costs. This paper focuses on the rotor design, the active magnetic bearing design, the associated rotordynamics, and a preliminary closedloop controller.
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contributor author | Kailasan, Arunvel | |
contributor author | Dimond, Tim | |
contributor author | Allaire, Paul | |
contributor author | Sheffler, David | |
date accessioned | 2017-05-09T01:17:46Z | |
date available | 2017-05-09T01:17:46Z | |
date issued | 2015 | |
identifier issn | 1528-8919 | |
identifier other | gtp_137_04_042505.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/157931 | |
description abstract | Energy storage is becoming increasingly important with the rising need to accommodate the energy needs of a greater population. Energy storage is especially important with intermittent sources such as solar and wind. Flywheel energy storage systems store kinetic energy by constantly spinning a compact rotor in a lowfriction environment. When shortterm backup power is required as a result of utility power loss or fluctuations, the rotor’s inertia allows it to continue spinning and the resulting kinetic energy is converted to electricity. Unlike fossilfuel power plants and batteries, the flywheel based energy storage systems do not emit any harmful byproducts during their operation and have attracted interest recently. A typical flywheel system is comprised of an energy storage rotor, a motorgenerator system, bearings, power electronics, controls, and a containment housing. Conventional outer flywheel designs have a large diameter energy storage rotor attached to a smaller diameter section which is used as a motor/generator. The cost to build and maintain such a system can be substantial. This paper presents a unique concept design for a 1 kWh insideout integrated flywheel energy storage system. The flywheel operates at a nominal speed of 40,000 rpm. This design can potentially scale up for higher energy storage capacity. It uses a single composite rotor to perform the functions of energy storage. The flywheel design incorporates a fiveaxis active magnetic bearing system. The flywheel is also encased in a double layered housing to ensure safe operation. Insulatedgate bipolar transistor (IBGT) based power electronics are adopted as well. The design targets cost savings from reduced material and manufacturing costs. This paper focuses on the rotor design, the active magnetic bearing design, the associated rotordynamics, and a preliminary closedloop controller. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Design and Analysis of a Unique Energy Storage Flywheel System—An Integrated Flywheel, Motor/Generator, and Magnetic Bearing Configuration | |
type | Journal Paper | |
journal volume | 137 | |
journal issue | 4 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4028575 | |
journal fristpage | 42505 | |
journal lastpage | 42505 | |
identifier eissn | 0742-4795 | |
tree | Journal of Engineering for Gas Turbines and Power:;2015:;volume( 137 ):;issue: 004 | |
contenttype | Fulltext |