US 12,248,032 B2
Fault managed power systems
John J. Shea, Wake Forest, NC (US); and Pawan Kumar Modi, Apex, NC (US)
Assigned to Schneider Electric USA, Inc., Boston, MA (US)
Appl. No. 18/009,641
Filed by Schneider Electric USA, Inc., Andover, MA (US)
PCT Filed Oct. 13, 2021, PCT No. PCT/US2021/054873
§ 371(c)(1), (2) Date Dec. 9, 2022,
PCT Pub. No. WO2022/081778, PCT Pub. Date Apr. 21, 2022.
Claims priority of provisional application 63/255,370, filed on Oct. 13, 2021.
Claims priority of provisional application 63/090,845, filed on Oct. 13, 2020.
Prior Publication US 2023/0221380 A1, Jul. 13, 2023
Int. Cl. G01R 31/52 (2020.01); H02H 3/16 (2006.01); H02H 5/12 (2006.01)
CPC G01R 31/52 (2020.01) [H02H 3/16 (2013.01); H02H 5/12 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A fault managed power system operable to provide at least 100 Watts of power, comprising:
a receiver including a DC/DC converter and a receiver switch controllable to provide a series of current pulses to the DC/DC converter at a predefined rate such that the current pulses are below a level that would result in a person going into ventricular fibrillation from an electrical shock;
a source controller connected to the receiver by a pair of electrical conductors, the source controller including a source switch controllable to connect electrical power from a power source to the pair of electrical conductors; and
a gate controller at the source controller, the gate controller programmed to determine whether a leakage current is present on either or both of the electrical conductors during a current-off interval of the series of current pulses, the leakage current being greater than a predetermined current threshold on either or both of the electrical conductors;
wherein the gate controller is further programmed to control the source switch to disconnect the power source from the electrical conductors in response to determining that the leakage current is present on either or both of the electrical conductors during the current-off interval of the series of current pulses.