公开(公告)号：US20150128662A1

公开(公告)日：2015-05-14

申请号：US14536004

申请日：2014-11-07

Applicant: LG ELECTRONICS INC. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Kyunghoon KIM ,  Jayeong YU ,  Seungjun CHEE ,  Seungki SUL ,  Minho JANG

IPC: D06F37/30 ,  H02P6/18 ,  H02P6/20 ,  D06F33/02

CPC classification number: D06F37/304 ,  D06F33/02 ,  D06F2202/12 ,  D06F2204/06 ,  H02P6/182 ,  H02P6/20 ,  Y02B40/52

Abstract: The laundry treatment machine, absent a position sensor to sense the rotor position of a motor, includes a driving unit having an DC/AC inverter, an voltage detection unit to detect output voltage, and an inverter controller to control the inverter. The output voltage detection unit includes a plurality of resistors connected between the inverter and the motor and a comparator to compare voltage detected by some of the resistors with reference voltage and to detect pulse width modulation (PWM)-based output voltage. The voltage detection unit outputs the PWM-based output voltage output from the comparator to the inverter controller in a first mode in which at least one switching device of the inverter is turned on. The voltage detection unit outputs voltage detected by other some of the resistors to the inverter controller in a second mode in which all switching devices of the inverter are turned off.

Abstract translation: 没有用于感测电动机的转子位置的位置传感器的洗衣处理机包括具有DC / AC逆变器的驱动单元，检测输出电压的电压检测单元和控制逆变器的逆变器控制器。 输出电压检测单元包括连接在逆变器和电动机之间的多个电阻器和比较器，用于将由一些电阻器检测到的电压与参考电压进行比较，并检测基于脉宽调制（PWM）的输出电压。 电压检测单元在逆变器的至少一个开关装置接通的第一模式下输出从比较器输出的基于PWM的输出电压到逆变器控制器。 电压检测单元将其他一些电阻器检测到的电压以逆变器的所有开关装置关闭的第二模式输出到逆变器控制器。