Flywheel energy storage systems (FESS) can recover and store vehicle kinetic energy during deceleration. In this work, Computational Fluid Dynamics (CFD) simulations have been carried out using the Analysis of Variance (ANOVA) technique to determine the effects of design parameters on flywheel windage losses and heat transfer characteristics.
With the power of a single flywheel energy storage unit reaching up to 1000 kW, system losses increase, leading to an overall temperature rise . Heat loss and transportation issues become critical factors affecting motor performance, which restrict the improvement of system stability and reliability [, , , ].
The flywheel energy storage system in this paper is a vertical flywheel supported by active magnetic bearings. A spiral cooling water jacket is designed outside the stator of the motor. Table 1 lists the basic dimensions and performance parameters of the flywheel energy storage system.
The shown unit features a rotor with a full-size 400 mm outer diameter but axial height scaled to 24% of the full-scale design with 1.0 kWh nominal capacity. Figure 1. Cutaway schematic of a flywheel energy storage system for experimental research. Inset shows the actual device [ 16 ].
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Contemporary flywheel energy storage systems, or FES systems, are frequently found in high-technology applications. Such systems rely on advanced high-strength materials …
Energy storage flywheel systems are mechanical devices that typically utilize an electrical machine (motor/generator unit) to convert electrical energy in …
The study also found that increasing rotor and housing surface roughness improved heat dissipation, as observed by up to a 2.7 % increase in the Nusselt number.
This study established a lumped parameter thermal network model for vertical flywheel energy storage systems, considering three critical gaps in conventional thermal …
1. Introduction Flywheel energy storage system (FESS) with magnetic bearings can realize high speed rotation and store the kinetic energy with high efficiency. Due to its great …
Feasible solutions for rotor heat dissipation in flywheel energy storage systems mainly include: filling low-temperature inert gases to enhance …
Keywords: Computational fluid dynamics Model validation Rotor skin friction coeficient Taylor-Couette flow Windage loss Flywheel energy storage A B S T R A C T …
Finally, a fresh hollow shaft flow cooling system is put forth to solve the heat dissipation issue in MW FESS MG rotor cooling. Key …
Experimental study on heat dissipation through circulation in the hollow shaft of MW-class flywheel motor rotor [J]. Energy Storage Science and Technology, 2025, 14 (8): 2925-2931.
Feasible solutions for rotor heat dissipation in flywheel energy storage systems mainly include: filling low-temperature inert gases to enhance rotor convective heat exchange without …
Energy storage flywheel systems are mechanical devices that typically utilize an electrical machine (motor/generator unit) to convert electrical energy in mechanical energy and vice …
Optimising flywheel energy storage systems for enhanced windage loss reduction and heat transfer: A computational fluid dynamics and ANOVA-based approach
Finally, a fresh hollow shaft flow cooling system is put forth to solve the heat dissipation issue in MW FESS MG rotor cooling. Key words: flywheel energy storage system, …
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