PFC APPARATUS AND METHOD FOR CONTROLLING POWER FACTOR CORRECTION

• Main Authors: JANG HUI SUNG, WOO DONG GYUN, KIM JEE HEON, KIM CHUL SOON, PARK SUNG UK
• Format: Patent
• Language: English; Korean
• Published: 04.04.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

A PFC control device comprises: a voltage control unit that outputs an input current command value of a PFC based on an output voltage and an output voltage command value of the PFC; and a current command upper limit generating unit that outputs an input current command upper limit value of the PFC based on an input current limit value and an input current command offset value of the PFC. The input current command upper limit value has an alternating current component to suppress occurrence of an overcurrent by minimizing a margin between an input current command and an upper limit value of the input current command. PFC 제어 장치로서, PFC의 출력전압과 출력전압지령값에 기반하여 PFC의 입력전류지령값을 출력하는 전압제어부 및 상기 PFC의 입력전류제한값 및 입력전류지령오프셋값에 기반하여 PFC의 입력전류지령상한값을 출력하는 전류지령상한생성부를 포함하고, 입력전류지령상한값은 교류성분을 갖도록 함으로써 입력전류지령과 입력전류지령의 상한값의 마진을 최소화하여 과전류가 발생하는 것을 억제할 수 있는 PFC 제어 장치에 관한 것이다.