beihang magnetically suspended flywheel energy storage
Radial position control for magnetically suspended high‐speed flywheel ...
High-speed flywheel energy storage system (HFESS) has a broad application prospect in renewable energy, aerospace, uninterruptible power supply, electric vehicles and other fields. Active magnetic bearings (AMBs) are very suitable for the rotor supporting system of HFESS due to the advantages of adjustable dynamic …
Process control of charging and discharging of magnetically suspended flywheel energy storage …
An observation control model of load torque is therefore proposed to mitigate the disturbance load torque acting on magnetically suspended FESS (MS-FESS) during the charging process. Moreover, for the discharging process of MS-FESS, a compound control model combing the sliding model control and the extend state observer is proposed to …
Radial position control for magnetically suspended high‐speed flywheel energy storage …
Radial position control for magnetically suspended high-speed flywheel energy storage system with inverse system method and extended 2-DOF PID controller ISSN 1751-8660 Received on 15th June 2019 Revised 8th August 2019 Accepted on 29th August 2019
Magnetic Bearings for Non-static Flywheel Energy Storage
Modern high-speed FESS can potentially overcome these disadvantages if certain engineering challenges regarding FESS design are solved. One is flywheel suspension, usually comprising magnetic bearings for low-friction vacuum operation. Before FESS can be utilized in non-static transport applications such as cars and ships, the …
Kun Liu | IEEE Xplore Author Details
Kun Liu received the B.S. and M.S. degrees in automation from the Beihang University, Beijing, China, in 1985 and 1988, respectively, and the Ph.D. degree in rocket engine from the National University of Defense Technology, Changsha, China, in 1999. ... magnetically suspended flywheel energy storage system, an inertially stabilized platform ...
Flywheel energy storage—I: Basic concepts
The basic concepts of flywheel energy storage systems are described in the first part of a two part paper. General equations for the charging and discharging characteristics of flywheel systems are developed and energy density formulas for flywheel rotors are discussed. It is shown that a suspended pierced disk flywheel is competitive …
Gain scheduling cross feedback control approach for magnetic suspending flywheel
At high rotational speeds, the gyroscopic effect of flywheel rotor is the major factor that influences rotor stability. The gyroscopic effects will lead to nutation destabilization or procession destabilization. A gain scheduling proportional cross feedback control algorithm based on the rotational speed is accepted to compensate nutation and precession lag in …
:,,,, Abstract: As a novel type of actuator of the spacecraft for attitude control, the magnetically suspended reaction flywheel operates in a vacuum with its rotor suspended, making it difficult for its inner heat to dissipate, which results in the need for temperature calculation and thermal design.
Gain scheduling cross feedback control approach for magnetic suspending flywheel …
IEEE Trans Mech, 1998, 3(1):51-59 [7] Ahrens M. Performance of a magnetically suspended flywheel energy storage device[J]. IEEE Trans Contr, 1996,4(5):494-502 [8] Hawkins L, Murphy B, Kajs J. Analysis and testing of a magnetic bearing energy storage flywheel with gain-scheduled MIMO control ASME.
Performance of a magnetically suspended flywheel energy storage …
(DOI: 10.1109/87.531916) This paper describes a high-power flywheel energy storage device with 1 kWh of usable energy. A possible application is to level peaks in the power consumption of seam-welding machines. A rigid body model is used for controller design, stability, and robustness analysis. Flywheel systems tend to have strong gyroscopic …
PIDNN control for Vernier-gimballing magnetically suspended flywheel under nonlinear …
Vernier-gimballing magnetically suspended flywheel is often used for attitude control and interference suppression of spacecrafts. Due to the special structure of the conical magnetic bearing, the radial component generated by the axial magnetic force and the change of the magnetic air gap will cause the nonlinearity of stiffness and …
Process control of charging and discharging of magnetically suspended ...
The stored energy of the flywheel energy storage system raises to 0.5kW∙h when the rotating speed of the flywheel at 5000 rpm is reached. The charging period of flywheel energy storage system with the proposed ESO model is shortened from 85 s to 70 s. The output-voltage variation of the flywheel energy storage system is reduced by 46.6% …
Power compensation mechanism for AMB system in magnetically suspended flywheel energy storage …
In this article, the charge and discharge strategies of magnetically suspended FESS are investigated. As illustrated in Fig. 1, when the on-board power supply system fails to work, the supplementary off-board power supply system of AMB system based on the discharge of magnetically suspended FESS is designed to be an optional …
Power compensation mechanism for AMB system in magnetically suspended flywheel energy storage …
The blue line is the rotational speed curve of FW rotor, and the red line is the energy storage curve of magnetically suspended FESS, it shows that the storage power varies with the rotational speed. The working status of magnetically suspended FESS could be divided into the charge state and the discharge state.
Performance of a magnetically suspended flywheel energy storage …
A high-power flywheel energy storage device with 1 kWh of usable energy is described and a rigid body model is used for controller design, stability, and robustness analysis. This paper describes a high-power flywheel energy storage device with 1 kWh of usable energy. A possible application is to level peaks in the power consumption of …
Process control of charging and discharging of magnetically suspended ...
The stored energy of the flywheel energy storage system raises to 0.5kW∙h when the rotating speed of the flywheel at 5000 rpm is reached.. The charging period of flywheel energy storage system with the proposed ESO model is shortened from 85 s to 70 s. • The output-voltage variation of the flywheel energy storage system is …
Flywheel energy storage—II: Magnetically suspended …
Abstract. This article, the second of a two part paper, describes the general design requirements for a flywheel energy storage system. A new superflywheel energy storage system, using a spokeless, magnetically suspended, composite material pierced disk rotor is proposed. The new system is configured around a permanent magnet ("flux …
High-speed Rotor''s Mechanical Design and Stable Suspension Based on Inertia-ratio for Gyroscopic Effect Suppression …
The rotor''s stable suspension is one of significant requirements for a magnetically suspended control momentum gyroscope (MSCMG), the gyroscopic effect is one of rotor''s prominent characteristics. To find out the relationship between rotor''s structure and gyroscopic effect, the inertia-ratio is originally presented and the relationship …
Radial position control for magnetically suspended high‐speed flywheel energy storage …
First, the inverse system method is employed to decouple the AMB flywheel rotor system with strong non-linear and coupling, into four independent subsystems. Subsequently, extended 2-DOF PID controllers are used to regulate the decoupled subsystems, to obtain good performances of disturbance rejection and …
Flywheel energy storage. II
This article, the second of a two part paper, describes the general design requirements for a flywheel energy storage system. A new superflywheel energy storage system, using a spokeless, magnetically suspended, composite material pierced disk rotor is proposed. The new system is configured around a permanent magnet (''flux biased'') magnetic …
Magnetic Circuit Coupling Characteristics of Axial Gimballing Magnetic Bearing Biased with Permanent Magnet for Magnetically Suspended Flywheel
"Inertial Technology"Key Laboratory of National Defense Science and Technology, Beihang University, Beijing 100191, China Received: 2010-11-24 Revised: 2010-12-13 Online: 2011-04-25 Published: 2011-04-25
Optimum Damping Control of the Flexible Rotor in High Energy Density Magnetically Suspended Motor …
The rated rotational speed of the magnetically suspended motor (MSM) is always above the bending critical speed to achieve high energy density. The rotor will have a dramatic resonance when it passes the critical speed. Then, the magnetic bearing has to provide large bearing force to suppress the synchronous vibration. However, the bearing …
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