Flywheel Energy Storage Systems and Applications Ⅱ

Dear Colleagues,

Flywheel energy storage has the potential to play a significant role in the transformation of electrical power systems to those with the highest sustainability yet lowest cost. The penetration of renewable energy generation has created new challenges, which ultimately can only be solved by means of fast response energy storage. For example, as synchronous generation is removed from electricity grids, the ability of the system to maintain a steady frequency is compromised. Here lies the opportunity for flywheel storage, whose characteristics typically place it between ultra-capacitors and electrochemical batteries. Although electrochemical batteries are currently dominating the market for fast response storage, flywheels offer a very high cycle and calendar life, and are fully sustainable in terms of raw materials’ ease of recycling. Flywheels may also be hybridized with batteries in order to benefit from the strengths of each technology. As well as stationary grid applications, flywheels may be deployed for energy recovery in transport, either on board the vehicles or at strategic locations, for instance, in railway stations.

Contributions are invited in the following areas:

• Rotor research including safety and containment
• Low loss bearing systems
• Novel motor-generator technologies and drives
• Integrated flywheel motor-generator systems
• Vacuum systems
• Rotor dynamics
• Hybrid micro and mini grids—integration of renewables with flywheel storage
• Hybrid storage system—integration of flywheel storage with batteries or other storage systems
• Trackside storage in electrified rail transport
• Vehicle kinetic energy recovery

Prof. Dr. Keith Robert Pullen
Guest Editor

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• flywheel energy storage
• low friction bearings
• vacuum systems
• mini grids
• kinetic energy recovery