Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flywheel energy storage system of vertical-type outer-rotor electromagnetic bearing

An electromagnetic bearing and flywheel energy storage technology, which is applied in the field of flywheel energy storage, can solve the problems of poor structure compactness of the flywheel energy storage system, increase the axial length of the flywheel rotor, and affect the dynamic characteristics of the rotor, so as to improve the rotor dynamics. Features, compact system space size, compact effect

Pending Publication Date: 2019-02-15
HARBIN ELECTRIC CO LTD +1
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the flywheel energy storage system is installed with an inner rotor motor and supported by multiple magnetic suspension bearings, the axial length of the flywheel rotor will usually be increased, which will affect the dynamic characteristics of the rotor and lead to poor compactness of the flywheel energy storage system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flywheel energy storage system of vertical-type outer-rotor electromagnetic bearing
  • Flywheel energy storage system of vertical-type outer-rotor electromagnetic bearing
  • Flywheel energy storage system of vertical-type outer-rotor electromagnetic bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Example: see Figure 1 to Figure 5 , a vertical external rotor electromagnetic bearing flywheel energy storage system in this embodiment includes an energy storage conversion part, a rotor support part and an auxiliary part; wherein, the energy storage conversion part includes: a flywheel rotating body, an integrated electric / power generation interaction Inverted bidirectional motor; the rotor supporting part includes: upper radial electromagnetic bearing 4, lower radial electromagnetic bearing 5, permanent magnetic thrust bearing 17, upper auxiliary bearing 8, lower auxiliary bearing 9; auxiliary part includes: shell and mandrel 10 .

[0033]Among them, the integrated electric / power generation reciprocal bidirectional motor selects the outer rotor permanent magnet synchronous motor 6, the permanent magnet thrust bearing 17, the upper auxiliary bearing 8, the upper radial electromagnetic bearing 4, the outer rotor permanent magnet synchronous motor 6, the lower radial ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A flywheel energy storage system of a vertical-type outer-rotor electromagnetic bearing belongs to the technical field of flywheel energy storage. By the flywheel energy storage system, the problem ofinfluence on dynamic property of a rotor to cause poor compactness of the flywheel energy storage system due to axial length of a flywheel rotor of an existing flywheel energy storage system is solved. A permanent-magnet thrust bearing, an upper auxiliary bearing, an upper radial electromagnetic bearing, an outer-rotor permanent-magnet synchronous motor, a lower radial electromagnetic bearing anda lower auxiliary bearing are sequentially arranged on a core shaft from top to bottom, the upper radial electromagnetic bearing, the lower radial electromagnetic bearing and an inner wall of a flywheel rotation body are in a non-contact state, an upper end and a lower end of the flywheel rotation body are in clearance fit with the upper auxiliary bearing and the lower auxiliary bearing, the permanent-magnet thrust bearing is arranged above the flywheel rotation body, a gap is reserved between the permanent-magnet thrust bearing and an upper end surface of the flywheel rotation body, and theouter-rotor permanent-magnet synchronous motor is arranged in the flywheel rotation body and drives the flywheel rotation body to rotate. The rotor system is compact in structure, and the dynamic property of the rotor is improved.

Description

technical field [0001] The invention relates to a flywheel energy storage system, in particular to a flywheel energy storage system with a vertical outer rotor electromagnetic bearing, which belongs to the technical field of flywheel energy storage. Background technique [0002] As a flexible and adjustable active power source, the flywheel energy storage system actively participates in the dynamic behavior of the system, and can shorten the transient transition process after the disturbance is eliminated, so that the system can quickly return to a stable state. The flywheel energy storage system is mainly composed of flywheel rotors, bearings, integrated electric / power generation reciprocal bidirectional motors, electronic power converters, etc. The integrated electric / power generation reciprocal bidirectional motor realizes the conversion of electric energy and high-speed flywheel mechanical energy. The electric energy drives the motor through the power converter, and the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02K7/02H02K7/09H02K7/08
CPCH02K7/025H02K7/086H02K7/09Y02E60/16
Inventor 董爱华赵宇兰杨其国赵雷刘宏莫逆时振刚杨国军
Owner HARBIN ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com