US 11,989,044 B2
Device and method for harvesting energy from a power line magnetic field
Richard Desmarais, Somersworth, NH (US); Richard Martyn, Somersworth, NH (US); and Michael Giovannoni, Herndon, VA (US)
Assigned to Aclara Technologies LLC, St. Louis, MO (US)
Filed by Aclara Technologies LLC, St. Louis, MO (US)
Filed on Jun. 21, 2023, as Appl. No. 18/212,536.
Application 18/212,536 is a continuation of application No. 17/402,033, filed on Aug. 13, 2021, granted, now 11,709,511.
Application 17/402,033 is a continuation of application No. 16/534,058, filed on Aug. 7, 2019, granted, now 11,095,125, issued on Aug. 17, 2021.
Claims priority of provisional application 62/715,540, filed on Aug. 7, 2018.
Prior Publication US 2023/0350440 A1, Nov. 2, 2023
Int. Cl. G05F 1/12 (2006.01); G01R 19/25 (2006.01); H01F 27/42 (2006.01); H02J 3/00 (2006.01); H02J 3/18 (2006.01); H02J 50/00 (2016.01); H02J 50/10 (2016.01)
CPC G05F 1/12 (2013.01) [G01R 19/2513 (2013.01); H01F 27/427 (2013.01); H02J 3/007 (2020.01); H02J 3/18 (2013.01); H02J 50/001 (2020.01); H02J 50/10 (2016.02)] 21 Claims
OG exemplary drawing
 
1. An energy harvesting device comprising:
a current transformer in electrical communication with an electrical conductor and configured to harvest electrical energy from the electrical conductor by converting magnetic flux generated by the flow of alternating current though the electrical conductor into a first current;
a voltage clamping circuit configured to receive the first current and produce a first voltage at a clamped voltage level;
a supplementary voltage regulator separate from the voltage clamping circuit, and configured to operate continuously to maximize the harvested electrical energy by adjusting the clamped voltage level.