US 12,294,310 B2
Method and apparatus for controlling reverse current of phase-shifted full-bridge circuit
Qinyuan Tian, Ningde (CN); Huanle Zhou, Ningde (CN); Sigui Zhang, Ningde (CN); Jinfeng Gao, Ningde (CN); and Meng Li, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on May 11, 2023, as Appl. No. 18/315,893.
Application 18/315,893 is a continuation of application No. PCT/CN2021/122324, filed on Sep. 30, 2021.
Prior Publication US 2023/0283162 A1, Sep. 7, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2007.01)
CPC H02M 3/33584 (2013.01) [H02M 1/0009 (2021.05); H02M 1/0058 (2021.05); H02M 3/33573 (2021.05)] 15 Claims
OG exemplary drawing
 
1. A method for controlling a reverse current of a phase-shifted full-bridge circuit, comprising:
determining an error value of a reverse input current of the phase-shifted full-bridge circuit based on a sampling value of the reverse input current and a reference value of the reverse input current;
determining a compensation control quantity of a switch drive signal of the phase-shifted full-bridge circuit based on the error value, wherein the compensation control quantity is a compensation quantity of the error value and corresponds to a period or a duty cycle of the switch drive signal;
determining a period control quantity and a duty cycle control quantity of the switch drive signal based on the compensation control quantity, wherein the period control quantity is within a value range of the period of the switch drive signal, and the duty cycle control quantity is within a value range of the duty cycle of the switch drive signal; and
controlling the switch drive signal based on the period control quantity and the duty cycle control quantity.