Gerald Burt Kliman - Niskayuna NY Thomas Gerard Habetler - Snellville GA Marcus Alex Cash - Atlanta GA
Assignee:
General Electric Company - Schenectady NY
International Classification:
G01R 3106 G01R 3134
US Classification:
324545
Abstract:
A method for turn fault detection in a multi-phase alternating current machine includes obtaining instantaneous line-to-neutral voltages from each phase of the machine, calculating the sum of the line-to-neutral voltages, and using the sum to determine whether a turn fault exists. The line-to-neutral voltages can be filtered to reduce harmonics. In one embodiment, deviations in a time-averaged function of the sum are examined. The time-averaged function can be exponentially weighted. Each of the line-to-neutral voltages can be calibrated to remove inherent machine phase impedance imbalance prior to calculating the sum of the line-to-neutral voltages.
Method And Apparatus For Turn Fault Detection In Multi-Phase Ac Motors
Gerald Burt Kliman - Niskayuna NY Thomas Gerard Habetler - Snellville GA Marcus Alex Cash - Atlanta GA
Assignee:
General Electric Company - Schenectady NY
International Classification:
G01R 3106
US Classification:
324772
Abstract:
A method for turn fault detection in a multi-phase alternating current machine includes obtaining instantaneous line-to-neutral voltages from each phase of the machine, calculating the sum of the line-to-neutral voltages, and using the sum to determine whether a turn fault exists. The line-to-neutral voltages can be filtered to reduce harmonics. In one embodiment, deviations in a time-averaged function of the sum are examined. The time-averaged function can be exponentially weighted. Each of the line-to-neutral voltages can be calibrated to remove inherent machine phase impedance imbalance prior to calculating the sum of the line-to-neutral voltages.
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Marcus Cash 1981 graduate of Rutherfordton-Spindale High School in Rutherfordton, NC is on Memory Lane. Get caught up with Marcus and other high school alumni
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