Fluid based intermittent powering of downhole operations

A system to supply, via an electrical interface, an output electrical power to an electrical load that is downhole in a borehole formed in a subsurface formation, the system comprising:

• a drill string to be positioned in the borehole, the drill string comprising:
• a downhole motor to generate a mechanical energy in response to rotation caused by a fluid flowing from a surface of the borehole and through the downhole motor;
• an alternator to convert the mechanical energy generated to an alternating current;
• a rectifier to convert the alternating current to a rectified current;
• a DC link capacitor electrically coupled to the rectifier;
• a primary capacitor electrically coupled to the rectifier and the DC link capacitor, wherein the primary capacitor is to store the rectified current as an input electrical power having a variance that is greater than a variance threshold;
• the electrical load electrically coupled to the primary capacitor;
• a processor;
• and
• a machine-readable medium having program code executable by the processor to cause the processor to perform operations comprising:
• while continuing to generate the mechanical energy and in response to determining that at least one load criteria is satisfied, discharging the input electrical power from the primary capacitor as the output electrical power to the electrical load to power a downhole operation by the electrical load based on closing an electrical path between the primary capacitor and the electrical load, wherein the output electrical power has a peak that is greater than the input electrical power and has a rate of change that is greater than a rate threshold.

A method for supplying, via an electrical interface, an output electrical power to an electrical load that is downhole in a borehole formed in a subsurface formation, the method comprising:

• generating mechanical energy from a flow of a fluid being delivered into the borehole;
• converting the mechanical energy into an input electrical power;
• storing the input electrical power into a primary capacitor, the input electrical power having a variance that is greater than a variance threshold;
• and
• performing the following operations while continuing to generate the mechanical energy generated from the flow of the fluid,
• in response to determining that at least one load criteria is satisfied, discharging the input electrical power from the primary capacitor to the electrical load to power a downhole operation by the electrical load based on closing an electrical path between the primary capacitor and the electrical load, wherein the output electrical power includes a peak that is greater than the input electrical power and with a rate of change that is greater than an output change threshold.