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Five-freedom-degree magnetic suspension motor with brake function and control method thereof

A technology with braking function and degrees of freedom, applied in the field of five-degree-of-freedom magnetic levitation motor and its control, can solve the problems of power consumption, reducing and increasing the volume and cost of wind turbines

Active Publication Date: 2012-07-25
无锡恒洋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technologies or solutions have the following disadvantages: the magnetic suspension bearing itself needs to consume electric energy during operation. increase, but decrease
In addition, the brake system is an independent component, which increases the size and cost of the wind turbine

Method used

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  • Five-freedom-degree magnetic suspension motor with brake function and control method thereof
  • Five-freedom-degree magnetic suspension motor with brake function and control method thereof
  • Five-freedom-degree magnetic suspension motor with brake function and control method thereof

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Embodiment Construction

[0019] Such as figure 1 , figure 2 As shown, the present embodiment has a five-degree-of-freedom magnetic levitation motor with a braking function. , motor rotor 3, radial magnetic bearing group (in this example, the radial magnetic bearing group has a first radial magnetic bearing 5 located above the thrust magnetic bearing 6, a second radial magnetic bearing 5' located below the motor stator 8 ), the outer wall of the motor rotor 3 is fixed with a thrust disc 7, a thrust magnetic bearing 6 is arranged above the thrust disc 7, the thrust magnetic bearing 6 is fixed with the motor housing, and the thrust magnetic bearing 6 has an electromagnet coil for attracting the thrust disc 9. The upper end of the motor rotor 3 is provided with a base 1 fixed to the motor housing. The base 1 is equipped with a brake pad 2 and an axial position sensor 4 facing the motor rotor 3. The side of the motor rotor 3 is provided with a The radial position sensor, such as figure 1 In the present...

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Abstract

The invention relates to a five-freedom-degree magnetic suspension motor with a brake function and a control method thereof. Parking and brake functions of the five-freedom-degree magnetic suspension motor are respectively completed by a magnetic suspension bearing. When wind speed is too low, the electric energy consumed by the magnetic suspension bearing is greater than the electric energy generated by a wind driven generator, so a central processing unit controls a power supply module so that the power supply module switches off the power supply of a magnetic suspension bearing electric control system, and the magnetic suspension bearing stops working (parks). When the wind speed is two high, in order to protect the generator, the central processing unit sends instructions to a thrust magnetic bearing electric control system, the axial suspension position of a motor rotor is moved to a brake sheet and tightly approaches to the brake sheet through the thrust magnetic bearing, and the brake action (brake) is realized. When the wind speed meets the electricity generation requirement, the magnetic suspension bearing normally works, and the motor rotor is ensured to operate in a suspension state. The magnetic suspension motor integrates three functions of contactless support, parking and brake, the magnetic suspension motor is adopted, so that the structure of the wind driven generator can be simplified, and the electricity generation efficiency of the wind driven generator is effectively improved.

Description

technical field [0001] The invention relates to a five-degree-of-freedom magnetic levitation motor with a braking function and a control method thereof, belonging to the technical fields of wind power generation and magnetic levitation. Background technique [0002] The current worldwide energy and environmental issues are becoming increasingly prominent. As a clean energy generating device, wind power generator has great application prospects and has received extensive attention. The supporting part of the rotor system is a key part of the wind turbine, and its basic requirements are small frictional resistance and long life. The brake component is another key component of the wind turbine, and its basic requirement is to stop the rotor from rotating when the wind speed is too high (such as typhoon, etc.) to protect the generator. [0003] Generally, fans are supported by traditional bearings (rolling bearings or sliding bearings), but the frictional resistance is large, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N15/00
Inventor 谢振宇徐欣龙亚文周红凯王晓黄佩珍
Owner 无锡恒洋科技有限公司
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