公开(公告)号：US10587182B2

公开(公告)日：2020-03-10

申请号：US15739925

申请日：2016-06-24

Applicant: LG ELECTRONICS INC.

Inventor： Kyeongtae Kim ,  Yonghwa Lee ,  Jeongeon Oh

IPC: H02M1/12 ,  H02M1/14 ,  H02M3/156 ,  H02M7/48 ,  H02M1/15 ,  H02M1/42 ,  F24F11/88 ,  H02M7/5395 ,  F24F11/89 ,  H02M3/07 ,  H02M5/451 ,  H02M3/158 ,  H02M5/458 ,  H02M1/00 ,  H01F30/12

Abstract: The power conversion device may include a rectification unit, a boost converter for boosting power rectified from the rectification unit, a dc-end capacitor connected to an output end of the boost converter, an inductor current detection unit for detecting an inductor current flowing in an inductor within the boost converter, a dc-end voltage detection unit for detecting voltages of both ends of the dc-end capacitor, and a control unit for controlling the boost converter. The control unit may generate and output a converter switching control signal by performing proportional resonant control for a duty command value of a switching element within the boost converter, based on the detected inductor current and dc-end voltage. Therefore, a harmonic current component flowing through a dc-end capacitor induced by a ripple component of an input voltage may be reduced.