Five-degree-of-freedom magnetic levitation flywheel energy storage device

A flywheel energy storage and degree of freedom technology, applied in the direction of magnetic attraction or thrust holding device, electromechanical device, control mechanical energy, etc., can solve the problems of complex flywheel battery structure, increase the axial length of the flywheel, reduce the critical speed, etc., to achieve The structure is simple and firm, the effect of increasing the limit speed and reducing mechanical friction loss

Active Publication Date: 2017-08-18
JIANGSU UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the support loss, the flywheel battery is usually supported by multiple magnetic suspension bearings, which increases the axial length of the flywheel and reduces the critical speed, and also leads to the complex structure and bulky size of the flywheel battery

Method used

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  • Five-degree-of-freedom magnetic levitation flywheel energy storage device

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Embodiment Construction

[0024] Such as figure 1 As shown, the present invention includes a vacuum container 1, a rotating shaft 2, a flywheel 3, a permanent magnet unloading bearing 4, a four-degree-of-freedom magnetic suspension support and a transmission system 5. The rotating shaft 2, the flywheel 3, the permanent magnet unloading bearing 4, the four-degree-of-freedom magnetic suspension support and the transmission system 5 are placed in the vacuum container 1 to reduce the energy loss caused by wind resistance; the flywheel 3 is installed at the lower end of the rotating shaft 2, and the permanent magnet unloading The bearing 4 is fixedly connected to the flywheel 3 and the vacuum container 1 to realize the axial weight unloading of the flywheel energy storage system and realize the suspension of one degree of freedom in the axial direction; the upper end of the flywheel energy storage device is equipped with a four-degree-of-freedom magnetic levitation support and transmission system 5 to realiz...

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Abstract

The invention relates to a five-degree-of-freedom magnetic levitation flywheel energy storage device. A rotating shaft, a flywheel, a permanent magnet unloading bearing, and a four-degree-of-freedom magnetic levitation support and transmission system are disposed in a vacuum vessel for reducing energy loss caused by wind resistance. The flywheel is installed on the lower end of the rotating shaft and the permanent magnet unloading bearing is fixedly connected with the flywheel and vacuum vessel. The top end of the flywheel energy storage device is provided with the four-degree-of-freedom magnetic levitation support and transmission system. The four-degree-of-freedom magnetic levitation support and transmission system consists of a magnetic levitation switch reluctance motor, a permanent magnet, a magnetic conductive plate and a magnetic bearing. The permanent magnet provides the magnetic levitation switch reluctance motor and the magnetic bearing with bias magnetic fields for generating required suspension force under the effect of the magnetic conductive plate. A redundant coil for generating a biased magnetic axis is eliminated so as to achieve low loss and compact system structure. The magnetic levitation switch reluctance motor uses torque / suspension self-decoupling structure to improve the stability and reliability of the system.

Description

technical field [0001] The invention belongs to the technical field of electric energy storage, and in particular relates to a five-degree-of-freedom magnetic levitation flywheel energy storage device, which is especially suitable for uninterruptible power supply, aerospace and other fields. Background technique [0002] With the development of new energy power generation, distributed power systems, hybrid vehicles, aerospace and other fields, energy storage technology has become a worldwide research topic. Among many energy storage technologies, flywheel batteries are highly valued at home and abroad for their advantages of high power, high efficiency, long life, high energy storage density, and cleanliness. As a new type of energy storage equipment integrating mechanical, control, and electronic technologies, flywheel batteries still have many technical problems that restrict their engineering applications, mainly in the performance of suspension support systems and integr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/02H02K7/09H02N15/00H02K29/00
CPCY02E60/16H02K7/025H02K7/09H02K29/00H02N15/00
Inventor 袁野孙玉坤荣旺黄永红朱志莹
Owner JIANGSU UNIV
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