Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method

For high-capacity flywheel energy storage system (FESS) applied in the field of wind power frequency regulation, high-power, well-performance machine and magnetic bearings are developed. However, due to the existence of axial magnetic force in this machine structure along with the uncontrollability...

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Main Authors: Mingxin Sun, Yanliang Xu
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10428006/
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author Mingxin Sun
Yanliang Xu
author_facet Mingxin Sun
Yanliang Xu
author_sort Mingxin Sun
collection DOAJ
description For high-capacity flywheel energy storage system (FESS) applied in the field of wind power frequency regulation, high-power, well-performance machine and magnetic bearings are developed. However, due to the existence of axial magnetic force in this machine structure along with the uncontrollability of the magnetic bearing, the axial stability of the flywheel needs to be focused on. Firstly, a FESS with an axial flux permanent magnet synchronous machine (AFPMSM) based on soft magnetic composite (SMC) material and HALBACH axial passive magnetic bearing (PMB) structure is proposed, and its principle and structural superiority are introduced. Secondly, a three-dimensional (3D) finite element method (FEM) simulation model of the machine and bearing is established. The effects of current, air gap and bearing parameters on the rotor axial force are investigated using the 3D FEM. In addition, the relationship between current and displacement on axial force is fitted by the response surface method (RSM). The startup process and the effect of current change on displacement of the flywheel under different operating conditions are investigated by the Runge-kutta (RK) method. After that, the rotor displacement under various air gaps and bearing forces is studied to ensure that the rotor displacement is smaller than the air gap, thereby ensuring the flywheel rotor stays within a controllable range. Finally, the FESS prototype is manufactured and tested, which finally enables it to operate safely and stably.
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spelling doaj.art-2492a2bd698844c7aca40b3dffb9a6312024-02-16T00:00:51ZengIEEEIEEE Access2169-35362024-01-0112223152233010.1109/ACCESS.2024.336407310428006Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta MethodMingxin Sun0https://orcid.org/0000-0003-1015-9739Yanliang Xu1https://orcid.org/0000-0001-8284-4271School of Electrical Engineering, Shandong University, Jinan, ChinaSchool of Electrical Engineering, Shandong University, Jinan, ChinaFor high-capacity flywheel energy storage system (FESS) applied in the field of wind power frequency regulation, high-power, well-performance machine and magnetic bearings are developed. However, due to the existence of axial magnetic force in this machine structure along with the uncontrollability of the magnetic bearing, the axial stability of the flywheel needs to be focused on. Firstly, a FESS with an axial flux permanent magnet synchronous machine (AFPMSM) based on soft magnetic composite (SMC) material and HALBACH axial passive magnetic bearing (PMB) structure is proposed, and its principle and structural superiority are introduced. Secondly, a three-dimensional (3D) finite element method (FEM) simulation model of the machine and bearing is established. The effects of current, air gap and bearing parameters on the rotor axial force are investigated using the 3D FEM. In addition, the relationship between current and displacement on axial force is fitted by the response surface method (RSM). The startup process and the effect of current change on displacement of the flywheel under different operating conditions are investigated by the Runge-kutta (RK) method. After that, the rotor displacement under various air gaps and bearing forces is studied to ensure that the rotor displacement is smaller than the air gap, thereby ensuring the flywheel rotor stays within a controllable range. Finally, the FESS prototype is manufactured and tested, which finally enables it to operate safely and stably.https://ieeexplore.ieee.org/document/10428006/Flywheel energy storage system (FESS)axial-flux permanent magnet synchronous machine (AFPMSM)axial magnetic bearing (AMB)Runge-Kutta (RK) methodresponse surface modeling (RSM)axial stability
spellingShingle Mingxin Sun
Yanliang Xu
Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method
IEEE Access
Flywheel energy storage system (FESS)
axial-flux permanent magnet synchronous machine (AFPMSM)
axial magnetic bearing (AMB)
Runge-Kutta (RK) method
response surface modeling (RSM)
axial stability
title Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method
title_full Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method
title_fullStr Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method
title_full_unstemmed Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method
title_short Research on the Axial Stability of Large-Capacity Magnetic Levitation Flywheel Driven by Axial-Flux Permanent Magnet Machine Based on Runge-Kutta Method
title_sort research on the axial stability of large capacity magnetic levitation flywheel driven by axial flux permanent magnet machine based on runge kutta method
topic Flywheel energy storage system (FESS)
axial-flux permanent magnet synchronous machine (AFPMSM)
axial magnetic bearing (AMB)
Runge-Kutta (RK) method
response surface modeling (RSM)
axial stability
url https://ieeexplore.ieee.org/document/10428006/
work_keys_str_mv AT mingxinsun researchontheaxialstabilityoflargecapacitymagneticlevitationflywheeldrivenbyaxialfluxpermanentmagnetmachinebasedonrungekuttamethod
AT yanliangxu researchontheaxialstabilityoflargecapacitymagneticlevitationflywheeldrivenbyaxialfluxpermanentmagnetmachinebasedonrungekuttamethod