System and method for fault isolation and leakage current detection

An inverter system for a vehicle comprising:

• 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 defines 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.

An inverter system for a vehicle comprising:

• 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 defines 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.