公开(公告)号：US20190103803A1

公开(公告)日：2019-04-04

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 ,  H02M1/08 ,  H02M1/44

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：US20190081586A1

公开(公告)日：2019-03-14

申请号：US16124327

申请日：2018-09-07

Applicant: LG Electronics Inc.

Inventor： Seongju KIM ,  Mun Seok SEO ,  Joonsik AN

IPC: H02P27/08 ,  H02M1/14 ,  H02M1/088 ,  H02M1/08 ,  F04B35/04

CPC classification number: H02P27/08 ,  F04B35/04 ,  H02M1/083 ,  H02M1/088 ,  H02M1/143 ,  H02M7/53871 ,  H02M2001/0058

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.