Vertical type magnetic suspension flywheel energy storage system

Abstract

The invention belongs to the field of electrotechnics, discloses a vertical type magnetic suspension flywheel energy storage system, and provides a vertical type magnetic suspension flywheel energy storage system advantaged in high rotating speed, low standby loss and low cost, mainly for the purpose of solving the structural defect existing in a conventional flywheel energy storage system in the prior art. The vertical type magnetic suspension flywheel energy storage system is mainly characterized in that a rotating shaft connecting a motor with a flywheel is omitted, the motor is designed to be of an external rotor structure and an external rotor of the motor is arranged on the inner wall of the cylindrical flywheel. A sufficient centripetal force is provided for the motor rotor rotating at a high speed by use of the feature that the flywheel itself is high in structural strength such that the design requirement for high rotating speed of the flywheel energy storage system is satisfied. A radial suspension portion in a support system employs a design of a permanent magnetic suspension bearing so that the design requirements for low cost and low standby loss are met; and the vertical type magnetic suspension flywheel energy storage system can be widely applied to such occasions as power grid peak adjustment and frequency modulation, an uninterrupted power supply, aerospace and the like.

Description

technical field [0001] The invention belongs to the technical field of electric engineering and relates to a vertical magnetic levitation flywheel energy storage system, more specifically to a high speed, low standby loss and low cost vertical magnetic levitation flywheel energy storage system. Background technique [0002] At present, there are mainly the following energy storage technologies: chemical battery energy storage, pumped water energy storage and flywheel energy storage. Among them, flywheel energy storage can be widely used in power grid peak regulation and frequency modulation, uninterruptible power supply, aerospace and other occasions due to its advantages of no pollution, unlimited charge and discharge times, and distribution not restricted by natural conditions. Although relevant research institutes and companies have developed practical flywheel energy storage products in recent years, there are problems such as complex structure of flywheel energy storage...

AI Technical Summary

Problems solved by technology

Although relevant research institutes and companies have developed practical-level flywheel energy storage products in recent years, there are problems such as complex structure of flywheel energy storage systems, high standby loss, and high comprehensive cost.

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