SYSTEM AND METHOD FOR FAULT ISOLATION AND LEAKAGE CURRENT DETECTION
First Claim
1. An inverter system for a vehicle comprising:
- a housing;
a primary stage positioned within the housing and being configured to receive a first voltage signal from an energy power source to generate a second voltage signal;
a secondary stage positioned within the housing and configured to generate a third voltage signal in response to the second voltage signal, wherein at least one of the primary and the secondary stages define at least one resistance point for discharging leakage current responsive to generating the third voltage signal; and
a fault detection circuit configured to electrically couple the primary stage and the secondary stage to provide the second voltage signal to the secondary stage and to measure a portion of the third voltage signal to determine whether the leakage current being discharged through the at least one resistance point is within a predetermined current range.
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Accused Products
Abstract
An inverter system for a vehicle comprising a housing, a primary stage, a secondary stage and a fault detection circuit is provided. The primary stage is configured to receive a first voltage signal from an energy power source to generate a second voltage signal. The secondary stage is configured to generate a third voltage signal in response to the second voltage signal. At least one of the primary and the secondary stages define at least one resistance point for discharging leakage current responsive to generating the third voltage signal. The fault detection circuit is configured to electrically couple the primary stage and the secondary stage to provide the second voltage signal to the secondary stage and to measure a portion of the third voltage signal to determine whether the leakage current being discharged through the at least one resistance point is within a predetermined current range.
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Citations
20 Claims
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1. An inverter system for a vehicle comprising:
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a housing; a primary stage positioned within the housing and being configured to receive a first voltage signal from an energy power source to generate a second voltage signal; a secondary stage positioned within the housing and configured to generate a third voltage signal in response to the second voltage signal, wherein at least one of the primary and the secondary stages define at least one resistance point for discharging leakage current responsive to generating the third voltage signal; and a fault detection circuit configured to electrically couple the primary stage and the secondary stage to provide the second voltage signal to the secondary stage and to measure a portion of the third voltage signal to determine whether the leakage current being discharged through the at least one resistance point is within a predetermined current range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inverter system for a vehicle comprising:
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an electrically conductive housing; a primary stage positioned within the housing and being configured to receive a first voltage signal from an energy power source to generate a second voltage signal; a secondary stage positioned within the housing and configured to generate a third voltage signal in response to the second voltage signal, wherein at least one of the primary and the secondary stages define at least one resistance point for discharging leakage current responsive to generating the third voltage signal; and a fault detection circuit configured to electrically couple the primary stage and the secondary stage to provide the second voltage signal to the secondary stage and to measure a portion of the third voltage signal to determine whether the leakage current being discharged through the at least one resistance point is within a predetermined current range. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An inverter system for a vehicle comprising:
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a housing; a primary stage positioned within the housing and being configured to receive a DC voltage signal from an energy power source to generate a low AC voltage signal; a secondary stage positioned within the housing and configured to generate a high AC voltage signal in response to the low AC voltage signal, wherein at least one of the primary and the secondary stages define at least one resistance point for discharging leakage current responsive to generating the high AC voltage signal; and a fault detection circuit configured to electrically couple the primary stage and the secondary stage to provide the low AC voltage signal to the secondary stage to measure a portion of the high AC voltage signal to determine whether the leakage current being discharged through the at least one resistance point is within a predetermined current range. - View Dependent Claims (18, 19, 20)
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Specification