CN CN103929010A
The invention discloses a vertical type hybrid magnetic suspension flywheel energy storage system. A high-speed permanent magnet motor is a charging and power generating integrated motor, the input/output end is connected with a matrix converter, a flywheel body which can rotate at high speed is used in cooperation, and then the system has the energy storage and energy release bi-directional functions. A permanent magnet offset shaft and radial hybrid magnetic bearings are used as a main supporting structure, a mechanical rolling bearing provides system instability protection, standby losses of the flywheel energy storage system are reduced, and energy conversion efficiency is improved. A metal shell of the system is thick, a vacuum chamber is formed, rotor windmill losses of the system are reduced, and meanwhile the supporting and protection effects are achieved. A base is large, so that the center of gravity of the system is lowered and stability of the system is improved. The system has the advantages of being large in capacity, high in rotating speed and power density, low in standby loss and the like, and can be used for the occasions such as a power grid peak-load regulation occasion, an uninterruptible power supply and a hybrid power locomotive.
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