TEMPERATURE-BASED ELECTROMAGNETIC SWITCHING

One embodiment describes a method that includes determining, using a control circuitry, temperature of a switching device before a make operation by applying a measurement current to an operating coil of the switching device, wherein the measurement current is insufficient to make the switching devi...

Full description

Saved in:
Bibliographic Details
Main Authors Dziekonski, Stefan T, Bock, Christopher H, Kinsella, James J
Format Patent
LanguageEnglish
Published 24.01.2019
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:One embodiment describes a method that includes determining, using a control circuitry, temperature of a switching device before a make operation by applying a measurement current to an operating coil of the switching device, wherein the measurement current is insufficient to make the switching device; and determining voltage at the operating coil when the measurement current is applied, in which the voltage at the operating coil is directly related to the temperature. The method further includes determining, using the control circuitry, when to apply a pull-in current to the operating coil to close the switching device based at least in part on the voltage at the operating coil, such that the switching device makes at a desired time.
Bibliography:Application Number: US201816141469