Flywheel energy storage-dunshi magnetic energy technology

What is a flywheel energy storage system (fess)?

A flywheel energy storage system (FESS) with a permanent magnet bearing (PMB) and a pair of hybrid ceramic ball bearings is developed. A flexibility design is established for the flywheel rotor system.

How does a flywheel energy storage system work?

A flywheel energy storage system (FESS) uses a high speed spinning mass (rotor) to store kinetic energy. The energy is input or output by a dual-direction motor/generator. To maintain it in a high efficiency, the flywheel works within a vacuum chamber.

What is a compact and highly efficient flywheel energy storage system?

Abstract: This article proposed a compact and highly efficient flywheel energy storage system. Single coreless stator and double rotor structures are used to eliminate the idling loss caused by the flux of permanent magnetic machines. A novel compact magnetic bearing is proposed to eliminate the friction loss during high-speed operation.

What is China's first group standard for flywheel energy storage systems?

On April 10, 2020, the China Energy Storage Alliance released China’s first group standard for flywheel energy storage systems, T/CNESA 1202-2020 “General technical requirements for flywheel energy storage systems.”

Can superconducting magnetic bearings be used for flywheel energy storage?

K Nagashima et al., Superconducting magnetic bearing for a flywheel energy storage system using superconducting coils and bulk superconductors, Physica C: Superconductivity, 469 (15) (2009) 1244–1249. N Koshizuka, R&D of superconducting bearing technologies for flywheel energy storage systems, Physica C: Superconductivity, 445 (2006) 1103–1108.

How long did it take to develop a flywheel energy storage standard?

Development of the standard took two years of research and discussion between the participants. In August 2018, the China Energy Storage Alliance organized and hosted a seminar on flywheel energy storage system standardization at Tsinghua University. The seminar outlined the initial framework and scope for the flywheel energy storage standard.