US 11,894,775 B2
Power conversion method using a synergetic control of two power converters
Johann Walter Kolar, Zurich (CH); Yunni Li, Zürich (CH); and Jannik Robin Schaefer, Waedenswil (CH)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on Sep. 9, 2021, as Appl. No. 17/470,157.
Claims priority of application No. 20196408 (EP), filed on Sep. 16, 2020.
Prior Publication US 2022/0085725 A1, Mar. 17, 2022
Int. Cl. H02M 1/42 (2007.01); H02M 3/335 (2006.01); H02M 3/00 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/33573 (2021.05) [H02M 1/4208 (2013.01); H02M 1/4216 (2013.01); H02M 3/01 (2021.05); H02M 3/33576 (2013.01); H02M 3/33592 (2013.01); H02M 1/007 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A power conversion method, comprising:
operating a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes in one of at least two different operating modes; and
operating an SR converter coupled to the PFC converter via the DC link nodes in one of at least two different operating modes dependent on an output voltage of the SR converter,
wherein operating the SR converter comprises regulating a voltage level of the DC link voltage dependent on a DC link voltage reference, and
wherein the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.