A Utility-Scale Flywheel Energy Storage System with a Shaftless, Hubless, High-Strength Steel Rotor

  title={A Utility-Scale Flywheel Energy Storage System with a Shaftless, Hubless, High-Strength Steel Rotor},
  author={Xiaojun Li and Bahareh Anvari and Alan B. Palazzolo and Zhiyang Wang and Hamid A. Toliyat},
  journal={IEEE Transactions on Industrial Electronics},
Energy storage is crucial for both smart grids and renewable energy sources such as wind or solar, which are intermittent in nature. Compared to electrochemical batteries, flywheel energy storage systems (ESSs) offer many unique benefits such as low environmental impact, high power quality, and larger life cycles. This paper presents a novel utility-scale flywheel ESS that features a shaftless, hubless flywheel. The unique shaftless design gives it the potential of doubled energy density and a… 
A Lab-scale Flywheel Energy Storage System: Control Strategy and Domestic Applications
In this paper, a grid-tied flywheel-based energy storage system (FESS) for domestic application is investigated with special focus on the associated power electronics control and energy management.
Overview of Flywheel Systems for Renewable Energy Storage with a Design Study for High-speed Axial-flux Permanent-magnet Machines
Flywheel energy storage is considered in this paper for grid integration of renewable energy sources due to its inherent advantages of fast response, long cycle life and flexibility in providing
A Lightweight, High-Speed Kinetic Battery for Hybrid and Electric Vehicles
This paper presents the conceptual design of a lightweight and high-speed kinetic battery to capture the braking energy and provide thrust for electric or hybrid vehicles. By acting as a high-power
Analysis of a Shaftless Semi-Hard Magnetic Material Flywheel on Radial Hysteresis Self-Bearing Drives
Flywheel Energy Storage Systems are interesting solutions for energy storage, featuring advantageous characteristics when compared to other technologies. This has motivated research effort focusing
A Review of Flywheel Energy Storage Systems for Grid Application
Flywheel technology is shown to be a promising candidate for providing frequency regulation and facilitating the integration of renewable energy generation and the feasibility of grid-based flywheel systems are explored.
A Combination 5-DOF Active Magnetic Bearing for Energy Storage Flywheels
A novel combination 5-DOF active magnetic bearing (C5AMB) designed for a shaft- less, hub-less, high-strength steel energy storage flywheel (SHFES), which enables doubled energy density compared to prior technologies.
Improving the Satellite Power Supply Continuity using Flywheel Energy Storage System
Recently, Flywheel Energy Storage (FES) systems are gaining significant interest from National Aeronautics and Space Administration Glenn Research Center (NASA's GRC) in satellite applications due to
A Coreless Permanent-Magnet Machine for a Magnetically Levitated Shaft-Less Flywheel
This paper proposes a framework for the design and analysis of a coreless permanent magnet (PM) machine for a 100 kWh shaft-less high strength steel flywheel energy storage system. The PM


Flywheel energy and power storage systems
A 2 MW flywheel for hybrid locomotive power
The University of Texas at Austin Center for Electromechanics (UT-CEM) is currently developing an Advanced Locomotive Propulsion System (ALPS) as part of the Next Generation High-Speed Rail program
An integrated flywheel energy storage system with homopolar inductor motor/generator and high-frequency drive
The design, construction, and test of an integrated flywheel energy storage system with a homopolar inductor motor/generator and high-frequency drive is presented in this paper. The work is presented
A coreless permanent-magnet machine for a magnetically levitated shaft-less flywheel
This paper proposes a framework for the design of a coreless permanent magnet (PM) machine for a 100 kWh shaft-less high strength steel flywheel energy storage system (SHFES). The PM motor/generator
Shaft-Less Energy Storage Flywheel
Embodiments of the present invention include a shaft-less energy storage flywheel system. The shaft-less energy storage flywheel system includes a solid cylindrical flywheel having permanent motor
Flywheel Energy Storage Drive for Wind Turbines
The main problem of the wind power is its stochastic availability. The pulsation of the wind speed causes power pulsation, resulting in deterioration of the power quality. To compensate it, energy
High-Speed Kinetic Energy Buffer: Optimization of Composite Shell and Magnetic Bearings
The design and optimization of a high-speed (30 000 r/min) kinetic energy storage system to function as an energy buffer storing up to 867 Wh, primarily for utility vehicles in urban traffic is presented.
MIMO active vibration control of magnetically suspended flywheels for satellite IPAC service
Theory and simulation results have demonstrated that four, variable speed flywheels could potentially provide the energy storage and attitude control functions of existing batteries and control