US 12,470,067 B2
Power control apparatus and method
Andrew John Scobie, London (GB); Yihong Wan, London (GB); and Hans-Thomas Landsberger, London (GB)
Assigned to Enoda Ltd., London (GB)
Appl. No. 18/718,015
Filed by Enoda Ltd., London (GB)
PCT Filed Dec. 2, 2022, PCT No. PCT/EP2022/084189
§ 371(c)(1), (2) Date Jun. 7, 2024,
PCT Pub. No. WO2023/104654, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 2117697 (GB), filed on Dec. 8, 2021.
Prior Publication US 2025/0054688 A1, Feb. 13, 2025
Int. Cl. H02J 3/28 (2006.01); H01F 27/24 (2006.01); H01F 30/12 (2006.01); H02J 3/01 (2006.01); H02J 3/24 (2006.01); H02J 3/26 (2006.01)
CPC H02J 3/28 (2013.01) [H01F 27/24 (2013.01); H01F 30/12 (2013.01); H02J 3/01 (2013.01); H02J 3/24 (2013.01); H02J 3/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power control apparatus comprising:
a magnetic core comprising a first limb, a second limb, and a third limb, wherein the first limb, second limb and third limb are each arc-shaped limbs, wherein each limb is arranged around a central axis, and each limb has a first end and a second end, wherein the first ends of the limbs are mutually connected at a first position along the central axis, and the second end of the limbs are mutually connected at a second position along the central axis;
a primary winding arranged around the first limb, wherein the primary winding is electrically coupled to a first AC power supply having a first phase, and wherein the first AC power supply induces a first signal in the primary winding;
a second secondary winding arranged around the second limb, wherein the second secondary winding is electrically coupled to a second load;
a third secondary winding arranged around the third limb, wherein the third secondary winding is electrically coupled to a third load;
a first voltage source converter having an AC connection and a DC connection, wherein either the AC connection of the first voltage source converter is electrically coupled to the primary winding, or the power control apparatus comprises a modulation winding arranged around the first limb and the AC connection of the first voltage source converter is electrically coupled to the modulation winding arranged around the first limb;
a second voltage source converter having an AC connection and a DC connection, wherein either the AC connection of the second voltage source converter is electrically coupled to each of the second secondary winding and the third secondary winding, or the power control apparatus comprises a respective modulation winding arranged around each of the second and third limbs and the AC connection of the second voltage source converter is electrically coupled to each of the modulation windings arranged around each of the second and third limbs; and
a controller communicatively coupled to each of the first voltage source converter and the second voltage source converter, the controller configured to:
receive data associated with parameters of the first signal in the primary winding;
compare the parameters of the first signal to parameters of a respective reference signal for each of the second secondary winding and the third secondary winding;
determine a harmonisation signal which, when applied to the first limb, causes a respective second signal in each of the second secondary winding and the third secondary winding to approximate the respective reference signal; and
cause application of the harmonisation signal to the first limb using the first voltage source converter.