Flywheel energy storage device and integrated magnetic bearing
A magnetic bearing, integrated technology, applied to magnetic bearings, bearings, electromechanical devices, etc., can solve the problems of difficult heat dissipation, temperature rise of the rotor 1a, reliability problems of the integrated magnetic bearing flywheel energy storage device, etc. The effect of reducing iron loss and improving reliability
Active Publication Date: 2020-07-21
坎德拉(深圳)新能源科技有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since the rotor 1a is in a near-vacuum environment (in order to reduce wind resistance and increase the speed), heat is difficult to dissipate, which will cause the temperature of the rotor 1a to rise continuously, resulting in problems with the reliability of the integrated magnetic bearing 10a and the flywheel energy storage device
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.
[0032] see Figure 4 , Figure 4 It is a schematic diagram of a partial three-dimensional structure of the integrated magnetic bearing of the present invention. The present invention proposes a flywheel energy storage device, which includes a flywheel rotor and an integrated magnetic bearing 10 matched with the flywheel rotor. The integrated magnetic bearing 10 of the present invention includes: a rotor 1 , an upper stator pole 2 , a lower stator pole 3 , an upper coil 4 , a lower coil 5 , a stator back yoke 6 , and a stator inner ring connector 7 .
[0033] The rotor 1 is conical, narrow at the bottom and wide at the top. see in conjunction Figure 12 , the laminations of the rotor 1 of the present invention use amorphous alloys, because the iron loss value of amorphous alloys is lower than that of general-purpose silicon steel sheets...
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
Login to View More Abstract
The invention provides a flywheel energy storage device and an integrated magnetic bearing. The integrated magnetic bearing comprises a tapered rotor and further comprises a plurality of upper statorpoles and a plurality of lower stator poles which are uniformly distributed around the rotor, a plurality of upper coils respectively wound on the upper stator poles, and a plurality of lower coils respectively wound on the lower stator poles; the lower stator poles are vertically aligned with the upper stator poles, the lower stator poles and the upper stator poles are paired and grouped one by one, when only a bias current is applied to the upper coils and the lower coils, the polarities of the poles of the same layer are the same, the polarities of the poles of different layers are opposite, and axial force can be formed; and when the upper coils and the lower coils superimpose a radial control current, a radial force can be formed. The iron loss of a rotor can be greatly reduced, so that the reliability is improved.
Description
technical field [0001] The invention relates to an integrated magnetic bearing, in particular to an integrated magnetic bearing suitable for a flywheel energy storage device. Background technique [0002] Magnetic bearings use magnetic force to suspend the rotor in the air, so that there is no mechanical contact between the rotor and the stator. Flywheel energy storage device (also known as flywheel energy storage battery) uses ultra-high-speed rotating flywheel to store energy, and realizes mutual conversion of mechanical energy and electrical energy through electromechanical energy conversion device. There is no mechanical contact in the magnetic bearing, and the rotor can run to a very high speed. It has the advantages of small mechanical wear, low energy consumption, low noise, long life, no lubrication, no oil pollution, etc., especially suitable for high speed, vacuum, ultra-clean, etc. in a special environment. [0003] Applying the magnetic bearing to the flywheel ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04H02K7/02
CPCF16C32/044F16C32/0459F16C32/048H02K7/025F16C2380/28Y02E60/16
Inventor 刘成涛
Owner 坎德拉(深圳)新能源科技有限公司