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Magnetic bearing fault-tolerant drive system

A drive system, magnetic bearing technology, applied in the direction of bearings, shafts and bearings, bearing components, etc., can solve the problems of magnetic bearings losing suspension, mechanical components damage, etc.

Active Publication Date: 2019-05-03
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One or more faults in the power electronics, such as an open circuit fault, can cause the magnetic bearing to lose its levitation
Loss of bearing suspension when a rotating shaft (e.g., rotor) spins at high speeds can cause severe damage to mechanical components

Method used

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  • Magnetic bearing fault-tolerant drive system
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  • Magnetic bearing fault-tolerant drive system

Examples

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Embodiment Construction

[0027] The following description is merely exemplary in nature, and is not intended to limit the disclosure, its application, or uses. It should be appreciated that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. As used herein, the term module refers to processing circuitry, which may include application-specific integrated circuits (ASICs), electronic circuits, processors (shared, dedicated, or group) and memory executing one or more software or firmware programs, combinational logic circuits , and / or other suitable components that provide the described functionality.

[0028] The magnetic bearing fault tolerant drive system includes an electronic fault tolerant magnetic bearing drive module configured to selectively operate in a first mode (ie, normal mode) and a second mode (ie, auxiliary mode). The fault-tolerant magnetic bearing driving module may include a three-phase converter and a plurality of switching el...

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Abstract

The present disclosure relates to an electronic magnetic bearing fault-tolerant drive module comprising a first plurality of switching elements and a second plurality of switching elements. At least one winding is interposed between the first plurality of switching elements and the second plurality of switching elements. The first and second switching elements are configured to selectively operate in a first mode and a second mode to generate an electromagnetic field. The electronic magnetic bearing fault tolerant drive module is configured to detect one or more electrical faults, including an open circuit fault of at least one of the first and second switching elements.

Description

technical field [0001] The present invention relates generally to electronic failsafe systems, and more particularly to magnetic bearing drive systems including electronic failsafe architectures. Background technique [0002] Rotary machines implement contactless active magnetic bearings in a wide range of applications ranging from oil-free compressors, pumps, flywheels for energy storage and rotating shafts. The bearing itself levitates in a contactless manner in response to implementing an electromagnetic field generated by an electronic magnetic bearing driver circuit comprising multiple power electronics. One or more faults in the power electronics, such as an open circuit fault, can cause the magnetic bearing to lose its levitation. Loss of bearing suspension when a rotating shaft (eg, rotor) spins at high speeds can cause severe damage to mechanical components. Contents of the invention [0003] According to an embodiment, an electronic magnetic bearing fault-toler...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/04
CPCF16C32/0442F16C32/0457F16C32/04F16C39/06F16C32/0451F16C32/0474
Inventor D.姜P.克什尔萨加
Owner CARRIER CORP
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