Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1992-11-06
1994-11-08
Nguyen, Vinh
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324772, G08B 2100
Patent
active
053630394
ABSTRACT:
Apparatus and method for auto-self testing of a power converter and motor system wherein the power converter has three parallel legs, each including two series connected gate-turn-off thyristors (GTO) connected between a pair of DC power source buses. A microprocessor controls the test sequence in which each GTO is individually turned on in a predetermined order so as to create a transient snubber current through the motor and through each GTO when it is turned on. The snubber current and a voltage in each leg is measured and compared to a respective reference to detect wiring errors, and defects in the motor, the GTOs, and other system components. Error messages are generated in response to detection of abnormalities or defects.
REFERENCES:
patent: 3852656 (1974-12-01), Bourbeau
patent: 4384248 (1983-05-01), Matsuda et al.
patent: 4675799 (1987-06-01), Suzuki et al.
patent: 4843533 (1989-06-01), Roof et al.
patent: 4908756 (1990-03-01), Higashino
patent: 4926306 (1990-05-01), Ueda et al.
patent: 4953069 (1990-08-01), Braun et al.
patent: 5266891 (1993-11-01), Kumar et al.
"Fault Diagnosis in Three-Phase Thyristor Converters Using Microprocessor" by Murty, et al, IEEE Transactions on Industry Applications, vol. IA-20, No. 6, Nov. 1984, New York.
Elektrotechnik, vol. 73, No. 4, Apr. 1991, Wurzburg, de pp. 62-70 XP000227651 Brosh "Falsch Ist Rasch Gemessen".
Kumar Ajith K.
Stitt Thomas D.
General Electric Company
Kratz Ann M.
Nguyen Vinh
Snyder Marvin
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