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Class Information
Number: 324/772
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > Of individual circuit component or element > Motor or generator fault tests
Description: Subject matter including fault tests of (a) prime mover rotating electrical machinery; (b) rotating electrical machinery which changes mechanical energy to electrical energy.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616023 |
Method of detecting a malfunction of an encoder for a vehicle drive system |
Nov. 10, 2009 |
| 7612576 |
Method for detecting an inverter hardware failure in an electric power train |
Nov. 3, 2009 |
| 7592772 |
Stator inter-turn fault detection of synchronous machines |
Sep. 22, 2009 |
| 7570004 |
System and method for detecting a motor shorting relay failure |
Aug. 4, 2009 |
| 7570074 |
Electronic overload relay for mains-fed induction motors |
Aug. 4, 2009 |
| 7545163 |
Three phase motor diagnostics and phase voltage feedback utilizing a single A/D input |
Jun. 9, 2009 |
| 7539549 |
Motorized system integrated control and diagnostics using vibration, pressure, temperature, speed, and/or current analysis |
May. 26, 2009 |
| 7538571 |
Starter zero current test apparatus and method |
May. 26, 2009 |
| 7535372 |
Method for measuring the operating state of a synchronous motor using composite power angle meter |
May. 19, 2009 |
| 7528611 |
Methods and system for detecting winding faults in a generator with parallel windings |
May. 5, 2009 |
| 7499815 |
Machine radial stack gap generation and clearance management system and method |
Mar. 3, 2009 |
| 7489483 |
System and method for look ahead detection of electrical problems at a motor of a vehicle |
Feb. 10, 2009 |
| 7462999 |
Brushless servo motor tester |
Dec. 9, 2008 |
| 7414425 |
Damping control in a three-phase motor with a single current sensor |
Aug. 19, 2008 |
| 7411404 |
Apparatus, system, and method for detecting an electrical short condition in a dynamoelectric machine |
Aug. 12, 2008 |
| 7382138 |
System and method for non-destructive testing of rotors |
Jun. 3, 2008 |
| 7382150 |
Sensitivity switchable detection circuit and method |
Jun. 3, 2008 |
| 7355436 |
Method for error detection in a drive mechanism |
Apr. 8, 2008 |
| 7339394 |
Current sensing in a two-phase motor |
Mar. 4, 2008 |
| 7336455 |
System and method for proactive motor wellness diagnosis |
Feb. 26, 2008 |
| 7310002 |
Motor inspection method |
Dec. 18, 2007 |
| 7288956 |
Device and method for detecting rotor speed of a multiple phase motor with bipolar drive |
Oct. 30, 2007 |
| 7275003 |
Harmonic diagnosing method for electric facility |
Sep. 25, 2007 |
| 7259583 |
Methods and apparatus for testing power generators |
Aug. 21, 2007 |
| 7253634 |
Generator protection methods and systems self-tuning to a plurality of characteristics of a machine |
Aug. 7, 2007 |
| 7245130 |
Method and apparatus for diagnosing motor damping network integrity |
Jul. 17, 2007 |
| 7239149 |
Search coil mount for facilitating inspection of a generator rotor in situ |
Jul. 3, 2007 |
| 7239168 |
Current sensing in a two-phase motor |
Jul. 3, 2007 |
| 7224177 |
Apparatus and method for determining whether motor lock error occurs in sensorless motor |
May. 29, 2007 |
| 7212010 |
Method and device for detecting a contact point on a shaft of a rotating machine |
May. 1, 2007 |
| 7208971 |
Manual probe carriage system and method of using the same |
Apr. 24, 2007 |
| 7205756 |
Unbalanced current detection |
Apr. 17, 2007 |
| 7206719 |
Diagnostic method for predicting maintenance requirements in rotating equipment |
Apr. 17, 2007 |
| 7187180 |
Method of sensing motor winding current in integrated stepper motor buffer |
Mar. 6, 2007 |
| 7176674 |
Measurement of energy by means of a frequency converter |
Feb. 13, 2007 |
| 7174270 |
Rotation angle detecting apparatus and method of detecting rotation angle |
Feb. 6, 2007 |
| 7164243 |
System and method for establishing motor efficiency during balanced or unbalanced operating conditions |
Jan. 16, 2007 |
| 7165014 |
Partial discharge monitoring apparatus and partial discharge remote monitoring system for rotating electric machines |
Jan. 16, 2007 |
| 7161375 |
Phase-loss detection for rotating field machine |
Jan. 9, 2007 |
| 7126368 |
System and method for detecting motor coil-to-coil faults |
Oct. 24, 2006 |
| 7122982 |
DC motor rotation information detecting device |
Oct. 17, 2006 |
| 7109742 |
Current sensing in a two-phase motor |
Sep. 19, 2006 |
| 7102379 |
Apparatus and method for monitoring and/or analysis of electrical machines during operation |
Sep. 5, 2006 |
| 7098683 |
Motor driving system having power semiconductor module life detection function |
Aug. 29, 2006 |
| 7095243 |
AC generator exciter rotor slip-ring test apparatus |
Aug. 22, 2006 |
| 7095244 |
System and method for determining operational states of first and second electrical contacts in a motor |
Aug. 22, 2006 |
| 7091724 |
Model-based fault detection in a motor drive |
Aug. 15, 2006 |
| 7083544 |
Method and apparatus for monitoring a transmission part |
Aug. 1, 2006 |
| 7081760 |
Method of diagnosing a broken bar fault in an induction motor |
Jul. 25, 2006 |
| 7078925 |
Method and apparatus for detecting and correcting wiring errors in power monitoring applications |
Jul. 18, 2006 |
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