Fault clearing in electrical systems with injected signal

A power supply system to provide power to a load connected between first and second connectors, the system comprising:

• a power source that produces a power output;
• a power converter configured to receive the power output, convert it into a direct current (DC) output and provide the DC output between the first and second connectors;
• a filter connected to the power converter and between the connectors configured to smooth the DC output;
• and
• a first fault clearing source connected to the first connector configured to provide a first clearing voltage to the first connector when a first ground fault occurs on the first connector;
• a second fault clearing source connected to the second connector configured to provide a second clearing voltage to the second connector when a ground fault occurs on the second connector;
• and
• a switch connected to the first connector configured to open and close to clear the fault while the fault clearing source is providing the clearing voltage to the first connector;
• wherein at least one of the first and second clearing voltages includes an identifiable characteristic.

A power supply system to provide power to a load connected between first and second connectors, the system comprising:

• a power source that produces a power output;
• a power converter that configured to receive the power output and convert it into a direct current (DC) output and provides the DC output between the first and second connectors;
• a filter connected to the power converter and between the connectors and that is configured to smooth the DC output;
• a fault clearing source connected to the first connector that is configured to provide a clearing voltage to the first connector when a ground fault occurs on the first connector;
• and
• a contactor connected to the first connector configured to open and close to clear the fault while the fault clearing source is providing the clearing voltage to the first connector;
• wherein the clearing voltage includes an identifiable characteristic.