US 12,278,555 B2
Variable gain modulation methods and controllers for AC-DC converter with power factor correction
Yan-Fei Liu, Kingston (CA); Binghui He, Kingston (CA); Yang Chen, Hefei (CN); Bo Sheng, Kanata (CA); and Wenbo Liu, Shenzhen (CN)
Assigned to Queen's University at Kingston, Kingston (CA)
Filed by Queen's University at Kingston, Kingston (CA)
Filed on Oct. 26, 2022, as Appl. No. 17/973,616.
Claims priority of provisional application 63/272,154, filed on Oct. 26, 2021.
Prior Publication US 2023/0126710 A1, Apr. 27, 2023
Int. Cl. H02M 1/15 (2006.01); H02M 1/10 (2006.01); H02M 1/42 (2007.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/15 (2013.01) [H02M 1/10 (2013.01); H02M 1/4258 (2013.01); H02M 3/01 (2021.05); H02M 3/33571 (2021.05); H02M 3/33573 (2021.05)] 25 Claims
OG exemplary drawing
 
1. A controller for an AC-DC converter comprising a rectifier circuit that converts AC input voltage into DC output voltage, the controller comprising:
control logic that controls the rectifier circuit according to two or more operating modes;
wherein each operating mode of the two or more operating modes determines a different corresponding constant gain of the rectifier circuit and each operating mode is maintained for a selected integer number of a half-line period of the AC input voltage;
wherein the controller selects an operating mode from the two or more operating modes based on at least one of an AC input voltage value and a required DC output voltage value;
wherein the AC-DC converter provides a wide range of DC output voltage with power factor correction.