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System and method for synchronous machine health monitoring

一种健康状况、同步机的技术，应用在控制系统、电动机参数的估测/修正、测量电等方向，能够解决错误故障检测等问题

Active Publication Date: 2012-07-25
GENERAL ELECTRIC CO
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Problems solved by technology

This can lead to false fault detection

Method used

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  • System and method for synchronous machine health monitoring
  • System and method for synchronous machine health monitoring
  • System and method for synchronous machine health monitoring

Examples

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Embodiment Construction

[0014] Embodiments provided herein relate to methods and systems for monitoring synchronization health. figure 1 An environment 100 is illustrated in which various embodiments may operate. The environment 100 includes a synchronous machine 102 , an exciter and control unit 104 , a monitoring unit 106 , a synchronous machine health monitoring system 108 and a data store 110 .

[0015] The synchronous machine 102 is an electromechanical energy conversion device in which the rotor rotates at the same speed as the rotating magnetic field. Examples of synchronous machines include synchronous generators, synchronous motors, and power factor compensators. Synchronous machine 102 is switchable between motoring mode and generating mode by changing the electrical connections. For example, in an aviation gas turbine engine, synchronous machine 102 is an integrated starter-generator. The synchronous machine 102 operates in electric mode, receiving electrical power from the on-board bat...

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Abstract

A method, system and computer program product for monitoring health of a synchronous machine is provided. The method includes receiving (402) a plurality of phase voltage values and a plurality of phase current values. The method then computes (404) a negative sequence voltage (Vn) based on the plurality of phase voltage values. The method also computes (406) one or more operating parameters based on at least one of the plurality of phase voltage values and the plurality of phase current values. The method retrieves (408) from a data store, one or more known Vn based on the one or more operating parameters. The method then computes (410) a machine health indicator based on the computed Vn and the one or more known Vn, and raises (412) an alarm based on the machine health indicator.

Description

technical field [0001] Embodiments provided herein relate generally to diagnostics of synchronous machines and more specifically to health monitoring of synchronous machines. Background technique [0002] A synchronous machine is a machine in which the rotor rotates at a speed that is synchronous with the frequency of the supplied alternating current (AC). A conventional synchronous machine includes a laminated armature winding on the stator and a laminated field winding on the rotor. The field winding of the synchronous machine is supplied with direct current (DC). Some small synchronous machines use permanent magnets instead of field windings. Synchronous machines are widely used in power plants, aviation power systems, power factor correction systems, and the like. [0003] A synchronous machine may operate in generator mode, where an external prime mover rotates a rotor to generate AC power. Alternatively, a synchronous machine can be operated in a motoring mode, whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/06
CPCH02P25/021H02P23/14H02P25/024G01R31/346H02P29/0241G01R31/343
Inventor A·K·蒂瓦里A·班纳吉黄豪X·贾S·博亚纳帕利R·穆赫吉
Owner GENERAL ELECTRIC CO
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