Disc-type asynchronous motor, flywheel energy storage device, rotor suspension control system and method
A suspension control and asynchronous motor technology, applied in control systems, motor control, vector control systems, etc., can solve problems such as inability to run at high speed, achieve the effects of improving no-load loss, simple installation and maintenance, and simplified system structure
Active Publication Date: 2021-09-28
NANJING INST OF TECH
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When maintaining the state, the flywheel energy storage device has self-discharge phenomenon, especially the existing flywheel energy storage device mostly uses permanent magnet synchronous motor as the motor / generator, which has no-load loss
However, when the asynchronous motor is used as the motor / generator, it cannot run at high speed due to the limitation of the structural strength of the silicon steel sheet rotor.
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
[0042] The disk-type asynchronous motor, flywheel energy storage device, rotor suspension control system and method of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0043] Such as figure 1As shown, the disc asynchronous motor includes a flat motor housing 2, a rotating shaft 9 vertically arranged in the motor housing 2, and a disc rotor 5 coaxially fixed on the rotating shaft 9, and the motor housing 2 The upper radial limit bearing 1 and the lower radial limit bearing 8 are respectively arranged at the upper and lower ends of the rotating shaft 9, and the upper and lower positions of the disc rotor 5 are respectively arranged inside the motor housing 2. There is an upper stator 3 and a lower stator 7, and the upper stator 3 and the lower stator 7 are symmetrical about the central axis of the disc rotor 5, and the upper stator 3 and the lower stator 7 are coaxial with the rotating shaft...
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 relates to a disc-type asynchronous motor, a flywheel energy storage device, a rotor suspension control system and a method. The solid disc of electric pure iron is used as the rotor, which has a simple structure and high strength. The interference fit is adopted between the disc rotor and the flywheel, which is easy to install and maintain. The interference fit can increase the prestress between the two to meet the requirements of high-speed operation. When the motor is used as the motor / generator in the flywheel energy storage device, the high-speed The invention can improve the problem of no-load loss when the flywheel energy storage device is in the maintenance stage, and is beneficial to popularization of the flywheel energy storage device. The axial load is unloaded by the suspension force, the axial unloading bearing of the motor is canceled, the structure of the motor bearing system is simplified, and the cost of the motor is reduced. The axial load is supported by the axial magnetic pull of the disc rotor, and the levitation force is controlled by controlling the difference between the excitation components of the upper and lower winding currents. The control method and control system are relatively simple, and no additional levitation winding is added. The utilization rate of the winding is improved.
Description
technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a disc-type asynchronous motor, a flywheel energy storage device, a rotor suspension control system and a method. Background technique [0002] Vertical bilateral stator solid rotor disc motor without axial bearing (vertical disc asynchronous motor) is a new type of motor structure formed by combining bearingless technology with bilateral stator solid rotor disc motor. It also has a shaft Advantages of short length and high power density. Ordinary disc motors are supported by axial bearings, and the rotor is mostly in the form of laminated silicon steel sheets, which has problems such as complex structure, high cost, low structural strength, and the rotor speed is limited by the structural strength of the rotor. [0003] On the other hand, flywheel energy storage refers to the energy storage method that uses the motor to drive the flywheel to rotate at high speed, and...
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 Patents(China)
IPC IPC(8): H02K16/04H02K7/02H02K1/22H02N15/00H02P21/00H02P25/02
CPCH02K1/22H02K7/025H02K16/04H02N15/00H02P21/0003H02P25/02H02P2207/01Y02E60/16
Inventor 洪岑岑滕福林张永号孙权
Owner NANJING INST OF TECH