公开(公告)号：US11739459B2

公开(公告)日：2023-08-29

申请号：US16749230

申请日：2020-01-22

申请人： LG ELECTRONICS INC.

发明人： Youngseok Lim

IPC分类号： D06F34/10 ,  D06F34/08 ,  D06F33/42 ,  H02P27/08 ,  H02M7/5387 ,  D06F105/08 ,  D06F33/46 ,  D06F39/08 ,  H02P23/00

CPC分类号： D06F34/10 ,  D06F33/42 ,  D06F34/08 ,  D06F33/46 ,  D06F39/085 ,  D06F2105/08 ,  H02M7/53871 ,  H02P23/0004 ,  H02P27/08

摘要： Provided is a laundry treatment machine including a washing tub, a washing tub motor configured to rotate the washing tub, a drain pump configured to operate to drain the washing tub, a motor configured to operate the drain pump, a converter configured to output DC power, an inverter configured to convert the DC power, a dc terminal voltage detector configured to detect a dc terminal voltage output from the converter, and a controller configured to, when the dc terminal voltage continuously drops during a first period based on an operation of the inverter, perform control to turn off the inverter and operate the converter after the first period. Accordingly, it is possible to stably drive based on the dc terminal voltage during the operation of the drain pump.