Systems and methods for electrical power delivery with fault management

A method for delivering power across a distance with fault management, comprising:

• providing a transmitter-side subsystem configured to receive power from power mains and configured to convert the power to a direct current (DC) power and a receiver-side subsystem configured to convert the DC power to an output power and deliver the output power to a load;
• electrically connecting the transmitter-side subsystem with the receiver-side subsystem via a transmission line;
• positioning a fault management circuitry in the transmitter-side subsystem and/or the receiver-side subsystem, wherein the fault management circuitry includes:
• a reference resistor having a known resistance;
• during a fault-detection portion of a duty cycle of power delivered to the receiver-side subsystem,
• electrically connecting the reference resistor between a line conductor of a line and a neutral conductor;
• and
• disconnecting the load;
• determining an impedance during the fault-detection portion;
• determining a fault condition based on the impedance;
• and
• disconnecting the line if the fault condition is detected.

A fault management circuitry for managing faults in a power delivery system of delivering power across a distance, comprising:

• a reference resistor having a known resistance;
• and
• a controller configured to electrically connect the reference resistor between a line conductor of a line and a neutral conductor in a power delivery system and disconnect a load during a fault-detection portion of a duty cycle of direct current (DC) power delivered across a distance, the controller further configured to:
• determine an impedance of the power delivery system during the fault-detection portion;
• determine a fault condition based on the impedance;
• and
• disconnect the line if the fault condition is detected.