公开(公告)号：US11799319B2

公开(公告)日：2023-10-24

申请号：US17249281

申请日：2021-02-25

Applicant: Smart Wires Inc.

Inventor： Govind Chavan ,  Amrit Iyer ,  Haroon Inam ,  Faisal Masood ,  Abdul Rahman ,  Vinod Babu

IPC: H02J50/00 ,  H02J50/10 ,  H02H9/02 ,  H02J7/02 ,  H02J7/34

CPC classification number: H02J50/001 ,  H02H9/02 ,  H02J7/02 ,  H02J50/10 ,  H02J7/345 ,  H02J2207/50

Abstract: A power supply system is operable to harvest power at low and high line currents. A current transformer is arranged to couple to a power transmission line. A current sensor which may be a Rogowski coil is arranged to couple to the power transmission line. Branches of power supply circuitry are connected to a plurality of secondary windings of the current transformer. A control circuit selects one of the branches of power supply circuitry, depending on sensed magnitude of line current, to provide electrical power to an output capacitor. Sufficient stored energy is also provided for performing a backup of operating parameters when the line current reduces to zero.

公开(公告)号：US20210296930A1

公开(公告)日：2021-09-23

申请号：US17249281

申请日：2021-02-25

Applicant: Smart Wires Inc.

Inventor： Govind Chavan ,  Amrit Iyer ,  Haroon Inam ,  Faisal Masood ,  Abdul Rahman ,  Vinod Babu

IPC: H02J50/00 ,  H02J50/10 ,  H02J7/02 ,  H02H9/02

Abstract: A power supply system is operable to harvest power at low and high line currents. A current transformer is arranged to couple to a power transmission line. A current sensor which may be a Rogowski coil is arranged to couple to the power transmission line. Branches of power supply circuitry are connected to a plurality of secondary windings of the current transformer. A control circuit selects one of the branches of power supply circuitry, depending on sensed magnitude of line current, to provide electrical power to an output capacitor. Sufficient stored energy is also provided for performing a backup of operating parameters when the line current reduces to zero.