Identifying Function Defect Of At Least One Active Switch Element Of Active Bridge Rectifier

The invention relates to a method for identifying a function defect of at least one active switch element of an active bridge rectifier 40 in a locomotive power grid (10). The active bridge rectifier converts AC voltage to DC voltage. At least one voltage change curve of the AC and the DC voltage is...

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Bibliographic Details
Main Authors PETER NNAMDI KOHN, RALF HERBIG
Format Patent
LanguageEnglish
Published 03.06.2015
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:The invention relates to a method for identifying a function defect of at least one active switch element of an active bridge rectifier 40 in a locomotive power grid (10). The active bridge rectifier converts AC voltage to DC voltage. At least one voltage change curve of the AC and the DC voltage is detected. Based on the sum and/or the comparison with a predetermined value of more or more maximum value and/or minimum value, function defect of at least one active switch element is determined. A device used for applying the method is also disclosed in the invention.
Bibliography:Application Number: CN201410715937