Active magnetic bearing rotor falling protection method
A technology of active magnetic bearing and drop protection, applied in the field of magnetic levitation, to achieve the effect of simple cost and low cost
Pending Publication Date: 2022-03-29
北京高孚动力科技有限公司
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Abstract
The invention discloses an active magnetic bearing rotor falling protection method, which is used for protecting a magnetic bearing and a rotor when the magnetic bearing rotor falls radially or axially. The whole system comprises a system power supply unit, a position detection unit, a control unit, a normal suspension branch, a drop protection branch and a magnetic bearing coil group. According to the method, when the control unit judges that radial or axial falling of the rotor occurs, normal suspension branch power supply of the magnetic bearing coil assembly is switched to falling protection branch power supply, and at the moment, all coils are directly connected to a reliable power supply, so that the rotor is quickly and stably adsorbed and fixed; and structural damage caused by repeated impact of the rotor on the magnetic bearing is avoided. The method is still effective when the driving circuit breaks down, and meanwhile, compared with redundancy protection of the driving circuit, the method is simpler and lower in cost.
Application Domain
Magnetic bearings
Technology Topic
Fall protectionEngineering +7
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