Systems and methods for electrical power delivery with fault management

A method for delivering power across a distance via a power delivery system with fault management, the method 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;
• a reference resistor switch configured to electrically connect or disconnect the reference resistor, wherein a duty cycle of switching of the reference resistor switch includes a fault detection portion;
• one or more line switches configured to electrically connect or disconnect one or more line conductors;
• and
• a controller configured to control switching of the reference resistor switch and the one or more line switches;
• determining an impedance of the power delivery system during the fault detection portion;
• determining a fault condition based on the determined impedance and a predefined range of impedance;
• and
• disconnecting a 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, the fault management circuitry comprising:

• a reference resistor having a known resistance;
• a reference resistor switch configured to electrically connect or disconnect the reference resistor, wherein a duty cycle of switching of the reference resistor switch includes a fault detection portion;
• one or more line switches configured to electrically connect or disconnect one or more line conductors;
• and
• a controller configured to control switching of the reference resistor switch and the one or more line switches, 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 determined impedance and a predefined range of impedance;
• and
• disconnect a line if the fault condition is detected.