Method for detecting an electrical fault in a generator assemblage, and means for implementation thereof
First Claim
1. A method for identifying an electrical fault in a generator that includes a regulator and a rectifier having rectifier elements, the method comprising:
- ascertaining at least one parameter indicating a proportion of time during which a current is flowing through at least one of the rectifier elements; and
determining that an electrical fault exists if the at least one parameter deviates by more than a predetermined amount from an expected value, wherein the expected value is derived from a characteristic curve that indicates values for the at least one parameter as a function of excitation current values of an excitation winding of the generator, the parameter values indicating those of a faultless generator.
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Accused Products
Abstract
A method for identifying electrical faults in a generator assemblage, in particular of a motor vehicle, which assemblage includes a generator having a generator regulator and a rectifier having rectifier elements, the method encompassing ascertaining, in the context of at least one excitation current value of an excitation current through an excitation winding of the generator, at least one respective parameter that corresponds to a current conduction time proportion of at least one of the rectifier elements, and determining that an electrical fault exists if the at least one parameter deviates by more than a predetermined amount from an associated expected value. Also described is an apparatus for implementing the method.
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Citations
12 Claims
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1. A method for identifying an electrical fault in a generator that includes a regulator and a rectifier having rectifier elements, the method comprising:
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ascertaining at least one parameter indicating a proportion of time during which a current is flowing through at least one of the rectifier elements; and determining that an electrical fault exists if the at least one parameter deviates by more than a predetermined amount from an expected value, wherein the expected value is derived from a characteristic curve that indicates values for the at least one parameter as a function of excitation current values of an excitation winding of the generator, the parameter values indicating those of a faultless generator. - View Dependent Claims (2, 3, 4, 5, 6, 10, 11, 12)
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7. A regulator of a generator, the regulator comprising:
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a rectifier having rectifier elements; a comparator to compare at least one AC voltage present at at least one AC-voltage-side terminal of the rectifier with at least one DC voltage present at a DC-voltage-side terminal of the rectifier; and a computation unit, wherein the computation unit is configured to; determine at least one parameter that indicates a proportion of time during which a current is flowing through at least one of the rectifier elements; and determine that an electrical fault exists if the at least one parameter deviates by more than a predetermined amount—
from an expected value, wherein the expected value is derived from a characteristic curve that indicates values for the at least one parameter as a function of excitation current values of an excitation winding of the generator, the parameter values indicating those of a faultless generator.
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8. A non-transitory computer readable medium on which is stored a computer program, which is executable by a processor and which, when executed by the processor, causes the processor to perform a method for identifying an electrical fault in a generator, the generator including a regulator and a rectifier having rectifier elements, the method comprising:
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ascertaining at least one parameter indicating a proportion of time during which a current is flowing through at least one of the rectifier elements; and determining that an electrical fault exists if the at least one parameter deviates by more than a predetermined amount from an expected value, wherein the expected value is derived from a characteristic curve that indicates values for the at least one parameter as a function of excitation current values of an excitation winding of the generator, the parameter values indicating those of a faultless generator. - View Dependent Claims (9)
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Specification