US 11,658,565 B2
Apparatus for controlling power factor correction circuit of charger for vehicle battery
Jee Heon Kim, Gyeonggi-do (KR); Hyun Wook Seong, Gyeonggi-do (KR); Sung Uk Park, Busan (KR); Chul Soon Kim, Gyeonggi-do (KR); Hui Sung Jang, Gyeonggi-do (KR); and Dong Gyun Woo, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Oct. 18, 2021, as Appl. No. 17/503,936.
Claims priority of application No. 10-2020-0184809 (KR), filed on Dec. 28, 2020.
Prior Publication US 2022/0209652 A1, Jun. 30, 2022
Int. Cl. H02M 1/42 (2007.01); H02M 1/44 (2007.01); H02M 1/12 (2006.01)
CPC H02M 1/4233 (2013.01) [H02M 1/12 (2013.01); H02M 1/44 (2013.01)] 6 Claims
OG exemplary drawing
1. An apparatus for controlling a power factor correction circuit of a charger for charging a vehicle battery, the apparatus configured to correct a power factor of an input AC voltage through switching of a switching element, the apparatus comprising:
a phase angle detection unit configured to detect phase angle information of the input AC voltage; and
a frequency determination unit configured to:
synchronize a period, in which a preset frequency variation value varies, with a period of the input AC voltage by applying the phase angle information to the frequency variation value; and
determine, as a switching frequency of the switching element, a value obtained by applying the synchronized frequency variation value to a preset fundamental frequency value;
wherein the phase angle detection unit comprises:
a dq converter configured to convert the input AC voltage into a dq voltage;
a proportional-integral controller configured to output an angular velocity value to converge a q-axis voltage of the dq voltage, obtained by conversion in the dq converter, to zero; and
an integrator configured to integrate the output of the proportional-integral controller to derive the phase angle information.