The power regulation system controls the energy conversion between the superconducting magnet and the power grid, and is the bridge of power exchange between the energy storage battery components and the system. At present, the power regulation system generally adopts PWM converter based on fully controlled switching devices, which can quickly and independently control active and reactive power in the four quadrants, with low harmonic content and fast dynamic response speed.

Superconducting magnet

Superconducting magnets for energy storage batteries can be divided into two types: spiral tube and ring. The structure of the coil is simple, but the surrounding stray magnetic field is large. The stray magnetic field around the toroidal coil is small, but the structure is more complex. Since the flow capacity of superconductors is related to the magnetic field, the first problem that must be considered in the design of superconducting magnets is to meet the requirements of the magnetic field of superconducting materials, including the distribution of the magnetic field in space and the change with time. In addition, in the design of magnets, it is also necessary to consider the performance of superconducting lines, reliable operation, protection of magnets, sufficient mechanical strength, low temperature technology and cooling methods.