US 12,074,470 B2
System and method for single-stage on-board charger power factor correction reactive control
Rafael Jimenez Pino, Valls (ES); Pablo Gaona Rosanes, Valls (ES); Hector Sarnago Andia, Ólvega (ES); and Oscar Lucia Gil, Saragossa (ES)
Assigned to Lear Corporation, Southfield, MI (US)
Filed by Lear Corporation, Southfield, MI (US)
Filed on Nov. 16, 2021, as Appl. No. 17/527,868.
Claims priority of provisional application 63/118,136, filed on Nov. 25, 2020.
Prior Publication US 2022/0161673 A1, May 26, 2022
Int. Cl. H02M 3/335 (2006.01); B60L 53/22 (2019.01); H02J 7/02 (2016.01); H02M 1/00 (2007.01); H02M 1/42 (2007.01)
CPC H02J 7/02 (2013.01) [B60L 53/22 (2019.02); H02M 1/0009 (2021.05); H02M 1/4208 (2013.01); H02M 3/33584 (2013.01); B60L 2210/12 (2013.01); B60L 2210/14 (2013.01); B60L 2210/30 (2013.01); H02J 2207/20 (2020.01); H02J 2310/48 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle battery charger., comprising:
at least one transformer having one or more primary windings and one or more secondary windings;
a first modular converter including a first active bridge having a first plurality of switching devices being positioned with the one or more primary windings on a primary side of the vehicle battery charger to generate a first voltage signal in response to a filtered input signal;
a second active bridge including a second plurality of switching devices being positioned with the one or more secondary windings on a secondary side of the vehicle battery charger to generate a second voltage signal that is stored on one or more batteries on a vehicle in response to the first voltage signal;
a filter operably coupled to the first modular converter configured to provide the filtered input signal to the first modular converter in response to an input signal from a mains supply, wherein the filtered input signal includes a detectable current portion and an undetected current portion that is undetected by one or more current sensors; and
at least one controller programmed to:
deteunine the undetected current portion of the filtered input signal based at least on a capacitance of the filter; and
generate control variable to compensate for the undetected current portion based on a difference between a first compensation signal and the determined undetected current portion, wherein the control variable enables the vehicle battery charger to transfer power between the first active bridge and the second active bridge.