H - Electricity – 02 – M
Patent
H - Electricity
02
M
321/24
H02M 5/44 (2006.01)
Patent
CA 1134435
11 HV 04237 ABSTRACT OF THE DISCLOSURE The present invention provides a novel control and method for maintaining optimum performance and power transfer through HVDC power transmission systems during A. C. system faults affecting the rectifier end of the system. In particular, there is provided a novel control for HVDC power converters of the type normally employing equidistant-spaced firing pulses. The control senses the occurrence of a nearby single phase fault in a multiphase A.C. supply system supplying voltage across HVDC thyristors of such a power converter, which fault results in an advance of the phase of certain of the phase voltages and a retardation of the phase of other of the phase voltages. The control derives control signals for delaying the firing (gating-on) of these thysistors whose A.C. supply phase voltages are retarded and advancing the firing of those thyrsitors whose phase voltages are advanced thereby assuring that at all times adequate voltage exists across all the thyristors to assure safe turn-on and commutation off of the thyristors while at the same time assuring maximum power transfer through the HVDC pwoer transmission system even in the presence of severe A.C. system faults.
324523
Company General Electric
Eckersley Raymond A.
LandOfFree
Method and control for maintaining optimum performance of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and control for maintaining optimum performance of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and control for maintaining optimum performance of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-94252