Generator air-gap flux probe for detecting shorted rotor turns

Details Generator air-gap flux probe for detecting shorted rotor turns Generator air-gap flux probe for detecting shorted rotor turns

1985-06-26

1987-05-19

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324149, 324158MG, 324260, G01R 3102, G01R 3134, G01N 2787

Patent

active

046671480

ABSTRACT:
A generator air-gap flux probe for determining rate of change of flux density includes a resilient support spanning the air gap between the stator and the rotor of a dynamoelectric machine to support radial and/or tangential flux coils stably within a short distance of the rotor. The resilient support permits the portion of the flux probe spanning the air gap to deflect substantially during assembly or disassembly of the machine thereby to permit permanent installation of the air-gap flux probe. In one embodiment adapted to longer air gaps, the flux probe is mounted on a pedestal block installed on a dovetail slot wedge in the stator. This reduces the cantilevered distance which the flux probe must span. A tangential flux coil axis stripe marking the axis of the tangential flux coil aids in alignment.

REFERENCES:
patent: 3506914 (1970-04-01), Albright et al.
patent: 3676776 (1972-07-01), Bauer et al.
patent: 3890517 (1975-06-01), Marsh et al.
patent: 4078185 (1978-03-01), Singbartl
patent: 4196390 (1980-04-01), Pitkin

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