Dimension Optimization and Theoretical Calculation of Flywheel Rotor for Vehicle Energy Storage System

2011 ◽  
Vol 121-126 ◽  
pp. 3234-3237 ◽  
Author(s):  
Xu Zhang ◽  
Wei Wei Cui ◽  
Li Wei Li ◽  
Ji Jun Cui ◽  
Yang Cao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Theoretical Calculation ◽  
Radial Displacement ◽  
Storage System ◽  
Energy Storage System ◽  
High Energy ◽  
System Structure ◽  
Flywheel Energy Storage System ◽  
Energy Storage Efficiency ◽  
Flywheel Rotor

A novel kind of flywheel energy storage system structure for vehicle is put forward and studied. Flywheel rotor dimension optimization is achieved adopting genetic algorithm on MATLAB program, optimized dimension is helpful for the realization of high energy storage efficiency. Based on certain uniform ring simplification of flywheel rotor shape and applying elastic mechanics solution, theoretical calculation of radial displacement and stress is accomplished. Solved radial displacement, radial stress and hoop stress can be applied in practice for further precise design in the view of mechanical strength.

Nonlinear modeling and simulation of flywheel energy storage rotor system with looseness and rub-impact coupling hitch

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhu Youfeng ◽  
Liu Xinhua ◽  
Wang Qiang ◽  
Wang Zibo ◽  
Zang Hongyu
Keyword(s):  
Energy Storage ◽  
Differential Equations ◽  
Nonlinear Modeling ◽  
Storage System ◽  
Energy Storage System ◽  
Rotor System ◽  
Flywheel Energy Storage ◽  
Flywheel Energy Storage System ◽  
New Energy ◽  
Single Disk

Abstract Flywheel energy storage system as a new energy source is widely studied. This paper establishes a dynamic model of a single disk looseness and rub-impact coupling hitch flywheel energy storage rotor system firstly. Then dynamic differential equations of the system under the condition of nonlinear oil film force of the sliding bearing are given. Runge–Kutta method is used to solve the simplified dimensionless differential equations. The effect of variable parameters such as disk eccentricity, stator stiffness and bearing support mass on the system are analyzed. With the increase of eccentricity, the range of period-three motion is significantly reduced and the range of chaotic motion begins to appear in the bifurcation diagram. Meanwhile, stiffness of the stator and mass of the bearing support have a significant influence on the flywheel energy storage rotor system.

Dynamics of Flywheel Energy Storage System With Permanent Magnetic Bearing and Spiral Groove Bearing

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Yujiang Qiu ◽  
Shuyun Jiang
Keyword(s):  
Energy Storage ◽  
Dynamic Model ◽  
Storage System ◽  
Energy Storage System ◽  
Tuned Mass Damper ◽  
Magnetic Bearing ◽  
Spiral Groove ◽  
Flywheel Energy Storage System ◽  
Mass Damper ◽  
Spiral Groove Bearing

Developing a flywheel energy storage system (FESS) with permanent magnetic bearing (PMB) and spiral groove bearing (SGB) brings a great challenge to dynamic control for the rotor system. In this paper, a pendulum-tuned mass damper is developed for 100 kg-class FESS to suppress low-frequency vibration of the system; the dynamic model with four degrees-of-freedom is built for the FESS using Lagrange's theorem; mode characteristics, critical speeds, and unbalance responses of the system are analyzed via theory and experiment. A comparison between the theoretical results and the experiment ones shows that the pendulum-tuned mass damper is effective, the dynamic model is appropriate, and the FESS can run smoothly within the working speed range.

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