Coordinated load commutated inverter protection system

Details Coordinated load commutated inverter protection system Coordinated load commutated inverter protection system

H - Electricity

02

H

318/108, 321/24

H02H 7/12 (2006.01) H02M 5/45 (2006.01) H02P 5/40 (1985.01)

Patent

CA 1194929

COORDINATED LOAD COMMUTATED INVERTER PROTECTION SYSTEM Abstract of the Disclosure A fault protective system for a load commutated inverter motor drive including an AC to DC source side converter coupled from an AC source to a DC to AC load side converter via a DC link circuit and wherein the load side converter supplies AC power of varying magnitude and frequency to the synchronous motor load. A pair of microcomputers interlinked by a common digital memory respectively control the inverters and interface with hardware type sensor means for detecting the occurrence of a plurality of different types of faults. Additionally, a number of stored instructional sets or programs are respectively included in both microcomputers to detect by software means another plurality of faults. The detection of a fault on either side of the link circuit is communicated to the respective computer which sub- sequently communicates with the other microcomputer to effect a coordinated protective action in response to thyristor cell failures, circuit failures, and abnormal operating conditions. Cell failure faults include those instances where a thyristor cell actually fails due to an open or short circuit as well as those cases where a cell fails to commutate properly due to firing strategy problems. Circuit failures include open and short circuits both in the supply line and the motor leads, while abnormal operating conditions involve such things as low line voltage or excessive motor voltage.

426559

Affiliated with

Also associated with

Rating

Coordinated load commutated inverter protection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coordinated load commutated inverter protection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coordinated load commutated inverter protection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1298691