Recently, the State Intellectual Property Office granted a patent titled "Magnetic Breaking Device for Permanent Magnet Driven High Temperature Superconducting Flywheel Energy Storage System." The inventor behind this innovation is the Institute of Electrical Engineering at the Chinese Academy of Sciences. This new technology represents a significant advancement in energy storage systems, particularly those utilizing high-temperature superconducting materials.
The magnetic breaking device is designed for use in a permanent magnet-driven high-temperature superconducting flywheel energy storage system. In this setup, the thin-walled Dewar (12) is positioned directly above the driven coupler (3) of the magnetic coupler. It is also situated between the top wall and the driven chamber of the vacuum chamber (5). This precise placement ensures efficient thermal management and mechanical stability within the system.
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) of the magnetic coupler. This design allows for smooth operation and minimizes unwanted mechanical interference.
Inside the thin-walled Dewar (12), a high-temperature superconducting film (13) is installed, making direct contact with the inner bottom surface of the Dewar. This configuration ensures effective cooling and optimal performance of the superconducting material. Additionally, the Dewar is equipped with a low-temperature inlet port (10) and a low-temperature outlet port (11), which are connected to the low-temperature inlet pipe (8) and the low-temperature outlet pipe (9), respectively.
One end of the low-temperature inlet pipe (8) and the low-temperature outlet pipe (9) extends outside the vacuum chamber. These pipes are connected to an inlet control valve (6) and an outlet control valve (7), allowing for precise regulation of the cooling process. This control mechanism is essential for maintaining stable operating conditions and ensuring the longevity of the superconducting components.
Finally, a fixing bracket (14) is placed inside the vacuum chamber to provide structural support for the entire magnetic breaking device. This bracket plays a crucial role in securing the system and ensuring its reliable operation under various conditions.
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