Grid Load Mitigation in EV Fast Charging Stations Through Integration of a High-Performance Flywheel Energy Storage System with CFRP Rotor

2021 ◽  
Author(s):  
Armin Buchroithner ◽  
Rupert Presmair ◽  
Peter Haidl ◽  
Hannes Wegleiter ◽  
Bernd Thormann ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Storage System ◽  
Energy Storage System ◽  
Flywheel Energy Storage ◽  
Flywheel Energy Storage System ◽  
Fast Charging ◽  
Grid Load ◽  
Charging Stations

A Novel Bidirectional DC-DC Converter with Robust Control Scheme for Flywheel Energy Storage System

2011 ◽  
Vol 383-390 ◽  
pp. 3545-3551
Author(s):  
Jin Qiao Yuan ◽  
Yong Li Li ◽  
Bo Tong Li ◽  
Jie Sun ◽  
Zhen Tan
Keyword(s):  
Energy Storage ◽  
Robust Control ◽  
High Performance ◽  
Storage System ◽  
Energy Storage System ◽  
Current Control ◽  
Flywheel Energy Storage ◽  
Flywheel Energy Storage System ◽  
Control Scheme ◽  
Bidirectional Power Flow

This study presents a novel bidirectional dc-dc buck-boost converter compatible with the flywheel energy storage system (FESS) and a robust control for bidirectional power flow, according to the single cycle average current control scheme and proportional-integral (PI) control theory. The proposed converter and its control are designed to adjust voltage to achieve current limiting start up and final speed keeping of the motor in charge mode and maintain a constant output voltage in the case that terminal voltage of the motor in the FESS drops continually in discharge mode. Simulation results demonstrate high performance of the converter in both steady-state and dynamic operations.

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.

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