Recently, the State Intellectual Property Office announced a new patent titled "Magnetic Breaking Device for Permanent Magnet Driven High Temperature Superconducting Flywheel Energy Storage System." This innovative technology was developed by the Institute of Electrical Engineering at the Chinese Academy of Sciences. The invention introduces a novel approach to managing energy storage in high-temperature superconducting flywheel systems, offering improved efficiency and control.
The magnetic breaking device is designed to work with a permanent magnet-driven high-temperature superconducting flywheel. A key component of the system is the thin-walled Dewar (12), which is positioned directly above the driven coupler (3) of the magnetic coupler. This placement ensures optimal thermal management and structural alignment within the vacuum chamber (5).
The thin-walled Dewar (12) is aligned parallel to both the active disk (2) and the driven disk (3) of the magnetic coupler, and it is coaxial with their central axis. A small gap is maintained between the Dewar and the inner walls of the vacuum chamber (5), as well as between the Dewar and the driven disk (3), allowing for thermal expansion and mechanical stability. Inside the Dewar, a high-temperature superconducting film (13) is mounted, resting on the inner bottom surface to ensure effective heat dissipation and performance.
To maintain the low-temperature environment required for superconductivity, the Dewar is equipped with a low-temperature inlet port (10) and a low-temperature outlet port (11). These ports are connected to the low-temperature inlet pipe (8) and the low-temperature outlet pipe (9), respectively. The other ends of these pipes extend outside the vacuum chamber and are linked to an inlet control valve (6) and an outlet control valve (7), enabling precise regulation of the cooling system.
Additionally, a fixing bracket (14) is installed inside the vacuum chamber to provide structural support for the entire magnetic breaking device. This design ensures that the system remains stable and functional under various operating conditions, making it a promising advancement in the field of energy storage technology.
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