US 12,283,905 B2
Interleaved switching method of control for a polyphase inductive load
Stefan Smolenaers, Heidelberg West (AU)
Assigned to InvertedPower Pty Ltd, Heidelberg West (AU)
Appl. No. 18/265,524
Filed by InvertedPower Pty Ltd, Heidelberg West (AU)
PCT Filed Dec. 10, 2021, PCT No. PCT/AU2021/051479
§ 371(c)(1), (2) Date Jun. 6, 2023,
PCT Pub. No. WO2022/120436, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 2020904587 (AU), filed on Dec. 10, 2020.
Prior Publication US 2024/0030856 A1, Jan. 25, 2024
Int. Cl. H02P 27/08 (2006.01)
CPC H02P 27/08 (2013.01) 14 Claims
OG exemplary drawing
 
1. An interleaved switching controller for a polyphase connected inductive load, the controller comprising:
at least a first drive circuit and a second drive circuit in parallel, each connected to one or more phases of the polyphase connected inductive load;
wherein the controller includes:
a switching period (tfsw);
a first duty cycle (D1) period of switching the first drive circuit determined as a proportion of the switching period;
a second duty cycle (D2) period of switching the second drive circuit determined as a proportion of the switching period;
a last duty cycle of switching the last switched drive circuit which may be the same as the second drive circuit determined as a proportion of the switching period; and
wherein the controller includes a first period (t1) between the end of the first duty cycle and the beginning of the second duty cycle, and a second period (t2) between the end of the duty cycle of the last switched drive circuit and the end of the switching period; and wherein the first period (t1) is not equal to the second period (t2).