Electric eddy-current damping device for rotary machine rotor

An eddy current damping, rotating machinery technology, applied in the direction of rotation vibration suppression, etc., can solve the problems of large size and weight of electromagnetic bearings, limited maximum operating speed, low system reliability, etc., to achieve short response time, easy power supply, volume small effect
CN1609471AInactive Publication Date: 2005-04-27ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2005-04-27
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The electric eddy current damper of mechanical rotor operates on the principle that conductor moving in magnetic field will generate electric eddy current force proportional directly to the speed of the moving conductor. It includes mainly ring magnet and ring conductor coaxially on the rotor. Around the ring magnet surface, there is winding with some interval in between, and one of the ring magnet and the winding is fixed to the casing for producing non-rotation relative motion. When some current flows through the winding, a ring magnetic field will be established in the interval between the ring magnet and the ring conductor, and the object moving in the magnetic field will produce a damping force proportional to the motion speed to reduce vibration of the rotor system and raise the stability of the rotor system. Being simple and convenient, the electric eddy current damper may be applied in various kinds of mechanical rotor systems.
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Description

technical field

[0001] The invention relates to a damping device for a rotary machine rotor, in particular to an eddy current damping device for a rotary machine rotor. Background technique

[0002] Rotary machinery is one of the key equipment of modern large-scale industry, and the high-speed rotating rotor is its core component. The vibration and stability of the rotor system have always been an important factor that confuses engineers and hinders product performance, reliability and service life. Therefore, it is of great significance to reduce the vibration of the rotor system and improve the stability of the system.

[0003] For high-speed rotors supported on rolling bearings or sliding bearings, due to external interference or self-excitation, when the damping of the rotor system is insufficient, not only large vibrations but also instability will occur. In order to add necessary damping to the rotor system, elastic Damping support structure. The elastic damping sup...

Claims

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