Technical FAQs 4

What causes standby losses in a flywheel energy storage system?

Aerodynamic drag and bearing friction are the main sources of standby losses in the flywheel rotor part of a flywheel energy storage system (FESS). Although these losses are typically small in a well-designed system, the energy losses can become significant due to the continuous operation of the flywheel over time.

Can flywheel energy storage systems recover kinetic energy during deceleration?

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.

What is a flywheel energy storage system (fess)?

A vehicle’s kinetic energy can be recovered and stored in a flywheel energy storage system (FESS) (Erhan and Özdemir, 2021); therefore, optimisation of flywheel design is critical to the advancement of flywheel development and the reduction of emissions (Olabi et al., 2021, Choudhary et al., 2012).

What is a windage loss characterisation strategy for flywheel energy storage systems?

Non-invasive transient windage loss characterisation. Dedicated experimental test-rig for different vacuum levels. In this paper, a windage loss characterisation strategy for Flywheel Energy Storage Systems (FESS) is presented. An effective windage loss modelling in FESS is essential for feasible and competitive design.

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Flywheel energy storage loss

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Analysis of Standby Losses and Charging Cycles in Flywheel Energy

Aug 27, 2020 · Abstract and Figures Aerodynamic drag and bearing friction are the main sources of standby losses in the flywheel rotor part of a flywheel energy storage system (FESS).

A Comprehensive Analysis of the Loss Mechanism and

May 27, 2025 · This paper presents a comprehensive analytical framework for investigating loss mechanisms and thermal behavior in high-speed magnetic field-modulated motors for flywheel

Influence of Hybrid Excitation Ratio on Standby Loss and

Jan 30, 2025 · Standby loss has always been a troubling problem for the flywheel energy storage system (FESS), which would lead to a high self-discharge rate. In this article, hybrid excitation

Optimising flywheel energy storage systems for enhanced windage loss

Jun 1, 2025 · Abstract Concerns about global warming and the need to reduce carbon emissions have prompted the creation of novel energy recovery systems. Continuous braking results in

Analysis of Standby Losses and Charging

Aug 27, 2020 · Aerodynamic drag and bearing friction are the main sources of standby losses in the flywheel rotor part of a flywheel energy storage

Minimum loss optimization of flywheel energy storage

Apr 9, 2024 · A distributed controller based on adaptive dynamic programming is proposed to solve the minimum loss problem of flywheel energy storage systems. The speed constraint

Optimising flywheel energy storage systems for

May 15, 2025 · Optimising flywheel energy storage systems for enhanced windage loss reduction and heat transfer: A computational fluid dynamics and ANOVA-based approach Mahmoud

Standby Losses Reduction Method for Flywheels Energy Storage

Sep 1, 2023 · The flywheel energy storage system (FESS) can operate in three modes: charging, standby, and discharging. The standby mode requires the FESS drive motor to work at high

Windage loss characterisation for flywheel energy storage

Oct 30, 2024 · In this paper, a windage loss characterisation strategy for Flywheel Energy Storage Systems (FESS) is presented. An effective windage loss modelling i

Minimum loss optimization of flywheel

Apr 9, 2024 · A distributed controller based on adaptive dynamic programming is proposed to solve the minimum loss problem of flywheel

Analysis of Standby Losses and Charging Cycles in

Mar 31, 2023 · 1. Introduction The majority of the standby losses of a well-designed flywheel energy storage system (FESS) are due to the flywheel rotor, identified within a typical FESS

A Comprehensive Analysis of the Loss

May 27, 2025 · This paper presents a comprehensive analytical framework for investigating loss mechanisms and thermal behavior in high-speed

Analysis of Standby Losses and Charging Cycles in Flywheel Energy

Aug 27, 2020 · Aerodynamic drag and bearing friction are the main sources of standby losses in the flywheel rotor part of a flywheel energy storage system (FESS). Although these losses are

Analysis of Standby Losses and Charging

Aug 27, 2020 · Abstract and Figures Aerodynamic drag and bearing friction are the main sources of standby losses in the flywheel rotor part of a

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