US 12,470,127 B1
Power supply module responsive to high and low line currents
Govind Chavan, Union City, CA (US)
Assigned to Smart Wires Inc., Durham, NC (US)
Filed by Smart Wires Inc., Union City, CA (US)
Filed on Jan. 12, 2022, as Appl. No. 17/574,296.
Claims priority of provisional application 63/263,792, filed on Nov. 9, 2021.
Int. Cl. H02M 1/32 (2007.01); H02M 3/158 (2006.01)
CPC H02M 1/32 (2013.01) [H02M 3/158 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A power flow control system, comprising:
an impedance injection module having a first controller, a direct current (DC) link capacitor, and switches configured to charge and discharge the DC link capacitor according to the first controller;
a bypass module having a second controller and circuitry configured to bypass fault currents around the impedance injection module; and
a power supply module operable to harvest power from line current in a power transmission line, using a current transformer, to power at least one of the first controller or the second controller;
wherein the current transformer has a single turn primary winding, coupleable to the power transmission line, and a single secondary winding, on a core material having high permeability, and wherein the power supply module is to harvest the power through the single secondary winding and is operable to withstand a peak fault current up to 180 kiloamperes (kA) and a root mean square (RMS) current up to 63 kA having a duration of one second.