公开(公告)号：US20240007018A1

公开(公告)日：2024-01-04

申请号：US18255157

申请日：2021-03-01

Applicant: Mitsubishi Electric Corporation

Inventor： Hiroyuki NAKAGAMI ,  Hiroki SUZUKI

IPC: H02M7/219 ,  H02M5/458 ,  H02M1/00 ,  H02M1/088 ,  H02M1/32 ,  H02P27/06 ,  F25B31/02

CPC classification number: H02M7/219 ,  H02M5/4585 ,  H02M1/0009 ,  H02M1/088 ,  H02M1/32 ,  H02P27/06 ,  F25B31/02 ,  F25B2600/021

Abstract: An AC/DC converter includes: a charge accumulation unit including first and second capacitors connected in series; a switching unit including a switch unit; a control unit; a switch drive unit; and first current and second current detection units. The switch unit includes first and second switching elements connected in series. The switching unit switches between charging and non-charging of each of the first and second capacitors. The switch drive unit causes the first and second switching elements to perform an ON/OFF operation exclusively to each other. A current detector of the first current detection unit is disposed between a rectifier circuit and the switch unit. The control unit detects a current flowing through the switch unit on the basis of based on a difference value between a detection value of a first current detected by the first current detection unit and a detection value of a second current detected by the second current detection unit.