Unlock instant, AI-driven research and patent intelligence for your innovation.

Flywheel energy storage system with permanent magnet transmission

A flywheel energy storage and transmission technology, applied in the field of flywheel energy storage systems, can solve problems such as increasing the unbalanced power shock of the system

Pending Publication Date: 2022-03-29
STATE POWER INVESTMENT CORP RES INST
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The connection of a high proportion of power electronic devices will cause the power grid to remain at a low inertia level for a long time, increasing the impact of unbalanced power in the system, which brings more and more pressure on the safe and stable operation of the power 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 with permanent magnet transmission
  • Flywheel energy storage system with permanent magnet transmission
  • Flywheel energy storage system with permanent magnet transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] like figure 1 As shown, the flywheel energy storage system 1 of this embodiment includes an electric motor 10 , a flywheel rotor 20 , a permanent magnet transmission 30 , a generator 40 , a first transmission shaft 61 , and a second transmission shaft 62 . The permanent magnet transmission 30 includes a permanent magnet rotor 31 , a conductor rotor 32 and a displacement device 33 . The electric motor 10 is connected with the flywheel rotor 20, and the electric motor 10 can drive the speed of the flywheel rotor 20 to increase through the transmission shaft to store kinetic energy. The flywheel rotor 20 can drive the active rotor of the permanent magnet transmission 30 to rotate through the transmission shaft. The driving rotor drives the driven rotor to rotate at a constant speed.

[0044] In this embodiment, the permanent magnet rotor 31 is the input end of the permanent magnet transmission 30 , and the conductor rotor 32 is in transmission connection with the input e...

Embodiment 2

[0076] Below to figure 2 The flywheel energy storage system 1 of this embodiment is described as an example. The flywheel energy storage system 1 of this embodiment includes a motor 10, a flywheel rotor 20, a permanent magnet transmission 30, a generator 40, a constant speed ratio transmission device 51, and a first transmission shaft 61, the second transmission shaft 62 and the third transmission shaft 63. The flywheel rotor 20, the motor 10, and the permanent magnet transmission 30 are similar to those in the first embodiment, and will not be repeated here, only the differences will be described.

[0077] like figure 2 As shown, the first transmission shaft 31 passes through the flywheel rotor 20 and is in transmission connection with the flywheel rotor 20, one end of the first transmission shaft 31 is in transmission connection with the output end of the motor 10, and the other end of the first transmission shaft 31 is connected to the fixed transmission ratio transmissi...

Embodiment 3

[0086] Below to image 3 The flywheel energy storage system 1 of this embodiment is described as an example. The flywheel energy storage system 1 of this embodiment includes a motor 10, a flywheel rotor 20, a permanent magnet transmission 30, a generator 40, an adjustable gear ratio device 52, and a first drive shaft 61, the second transmission shaft 62 and the third transmission shaft 63. The flywheel rotor 20, the motor 10, and the permanent magnet transmission 30 are similar to those in the first embodiment, and will not be repeated here, only the differences will be described.

[0087] like image 3 As shown, the first transmission shaft 31 passes through the flywheel rotor 20 and is in drive connection with the flywheel rotor 20, one end of the first transmission shaft 31 is in drive connection with the output end of the motor 10, and the other end of the first transmission shaft 31 is connected to the gear ratio adjustable The input end of the device 52 is transmission...

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

The invention provides a flywheel energy storage system with a permanent magnet transmission. The flywheel energy storage system comprises a motor, a flywheel rotor, the permanent magnet transmission and a generator. The motor is connected with the flywheel rotor to drive the flywheel rotor to rotate. The permanent magnet transmission comprises a permanent magnet rotor and a conductor rotor which are coaxially arranged, the permanent magnet rotor and the conductor rotor are opposite in the axial direction and form an air gap, and the flywheel rotor is in transmission connection with one of the permanent magnet rotor and the conductor rotor to drive the permanent magnet rotor and the conductor rotor to rotate so as to drive the other one to rotate. The displacement device is used for adjusting the size of the air gap so that the rotating speed of the other one can be kept constant, and the other one is in transmission connection with the input end of the generator to drive the generator to stably generate power and output constant-frequency electric energy.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to a flywheel energy storage system with a permanent magnet transmission. Background technique [0002] With the development of a new round of energy transformation dominated by clean energy, the proportion of new energy in my country's power grid will become higher and higher. However, in new energy technologies, power electronic devices are mostly used to connect to the grid, and power electronic devices have no moment of inertia, so they cannot actively provide the necessary voltage and frequency support for the grid, nor can they provide the necessary damping effect. Especially with the increasing penetration of distributed energy resources connected to the grid through power electronic devices, the total moment of inertia of the grid continues to decrease, so there is a risk of large frequency deviations in the grid when a major load or power supply mutation occurs Also...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/02H02K49/10H02J3/30H02J15/00H02J3/24
CPCH02K7/025H02K49/108H02J3/30H02J15/007H02J3/241Y02E60/16
Inventor 孙璇刘江陈俊白宁沈峰刘雨涵孙册张蔚琦刘赟高康伟范霁红吴智泉陈义学赵静
Owner STATE POWER INVESTMENT CORP RES INST