公开(公告)号：US11031859B2

公开(公告)日：2021-06-08

申请号：US16737994

申请日：2020-01-09

Applicant: LG Electronics Inc.

Inventor： Mun Seok Seo ,  Seongju Kim ,  Joonsik An

IPC: H02M1/088 ,  H02P27/08 ,  H02M1/44 ,  H02M1/08 ,  H02M3/156 ,  H02M7/48 ,  H02M1/00 ,  H02J1/00 ,  H02P27/06

Abstract: A device for stabilizing a direct current (DC) distribution system includes a capacitor unit charged by a DC voltage supplied by a power supply stage of the distribution system. The device further includes an inverter that has three pair of switching elements. The device also includes a controller that controls a plurality of switches thereof to selectively enable an inverter circuit or a voltage stabilizing circuit of the DC distribution system. The device alleviates instability of DC voltage which may be generated in a transient period, or to drive a motor connected to the device.

公开(公告)号：US10771002B2

公开(公告)日：2020-09-08

申请号：US16124327

申请日：2018-09-07

Applicant: LG Electronics Inc.

Inventor： Seongju Kim ,  Mun Seok Seo ,  Joonsik An

IPC: H02P23/26 ,  H02P27/08 ,  H02M1/14 ,  H02M1/08 ,  F04B35/04 ,  H02M1/088 ,  H02M7/5387 ,  H02M1/00

Abstract: A device for stabilizing a direct current (DC) distribution system includes a capacitor unit charged by a DC voltage supplied by a power supply stage of the distribution system. The device further includes an inverter that has three pair of switching elements. The device also includes a voltage stabilization circuit constructed using one pair out of the three pairs of switching elements in the inverter. The device also includes a controller that controls the voltage stabilization circuit to alleviate instability of a DC voltage generated in a transient period.

公开(公告)号：US10554114B2

公开(公告)日：2020-02-04

申请号：US16132685

申请日：2018-09-17

Applicant: LG Electronics Inc.

Inventor： Mun Seok Seo ,  Seongju Kim ,  Joonsik An

IPC: H02M1/088 ,  H02P27/08 ,  H02M1/44 ,  H02M1/08 ,  H02M1/00

Abstract: A device for stabilizing a direct current (DC) distribution system includes a capacitor unit charged by a DC voltage supplied by a power supply stage of the distribution system. The device further includes an inverter that has three pair of switching elements. The device also includes a controller that controls a plurality of switches thereof to selectively enable an inverter circuit or a voltage stabilizing circuit of the DC distribution system. The device alleviates instability of DC voltage which may be generated in a transient period, or to drive a motor connected to the device.