公开(公告)号：KR101450481B1

公开(公告)日：2014-10-13

申请号：KR1020130166810

申请日：2013-12-30

Applicant: 서울대학교산학협력단

Inventor： 하정익 ,  정성호 ,  이용재

IPC: H02P6/18

CPC classification number: H02P6/18 ,  H02P21/12 ,  H02P2203/03

Abstract: According to an exemplary embodiment of the present invention, provided are a method and an apparatus for controlling a sensorless AC motor. The method of controlling a sensorless AC motor, in which the location of a rotor of a three-phase AC motor is estimated by using three shunt resistors, includes the following steps of: applying a voltage vector for current measurement to the motor by introducing a high frequency voltage signal for sensorless control to a voltage signal which is output from a current controller and input to an inverter in order to drive the three-phase AC motor; sampling current from the three-phase shunt resistors in the inverter; and estimating a location of the rotor based on the sampled current, wherein the voltage vector for current measurement includes a valid vector and a zero vector. The zero vector includes only an S0 vector, and the zero vector (S0) is [000] in which upper switches (M1, M2 and M3) of each leg of the inverter are all switched off.

Abstract translation: 根据本发明的示例性实施例，提供了一种用于控制无传感器AC电动机的方法和装置。 通过使用三个分流电阻来估计三相AC电动机的转子位置的无传感器AC电动机的控制方法包括以下步骤：通过引入电动机将电流测量的电压矢量施加到电动机 用于无传感器控制的高频电压信号，其从电流控制器输出并输入到逆变器以驱动三相AC电动机的电压信号; 从逆变器中的三相分流电阻采样电流; 以及基于所述采样电流来估计所述转子的位置，其中所述用于电流测量的所述电压矢量包括有效矢量和零矢量。 零矢量仅包括S0矢量，零矢量（S0）为[000]，其中逆变器的每个支路的上部开关（M1，M2和M3）全部关闭。

公开(公告)号：KR1020170041413A

公开(公告)日：2017-04-17

申请号：KR1020150140813

申请日：2015-10-07

Applicant: 엘지전자 주식회사 ,  서울대학교산학협력단

Inventor： 김종원 ,  이정대 ,  유명근 ,  안준호 ,  하정익 ,  정성호 ,  박재용

IPC: H02P21/14 ,  H02P27/06 ,  A47L9/28

CPC classification number: A47L9/28 ,  H02P21/14 ,  H02P27/06

Abstract: 본발명은모터구동장치및 이를구비하는홈 어플라이언스에관한것이다. 본발명의실시예에따른모터구동장치는, 스위칭동작에의해, dc단커패시터의직류전원을교류전원으로변환하고, 변환된교류전원을모터에출력하는인버터와, dc단커패시터와인버터사이에배치되는 dc단저항소자와, dc단저항소자를통해샘플링된상전류에기초하여, 인버터를제어하는제어부를구비하고, 제어부는, 모터에인가되는전압의주파수또는모터의회전주파수와, dc단저항소자를통해샘플링되는상전류의샘플링주파수가동기화도록제어한다. 이에따라, dc단저항소자를이용하여모터에흐르는상전류를정확하게연산할수 있게된다.

Abstract translation: 具有该电动机驱动装置的电动机驱动装置及家用电器 根据本发明实施例的电机驱动装置包括：逆变器，用于通过开关操作将直流短路电容器的直流电源转换成交流电源，并将转换后的交流电源输出到电机; 以及控制部，其根据通过直流级电阻元件采样的相电流来控制逆变器，控制施加于电动机的电压的频率或电动机的旋转频率， 使得通过相位比较器22采样的相电流的采样频率被同步。 因此，可以通过使用直流级电阻元件来精确地计算在马达中流动的相电流。

公开(公告)号：KR101401474B1

公开(公告)日：2014-06-03

申请号：KR1020120149688

申请日：2012-12-20

Applicant: 서울대학교산학협력단

Inventor： 하정익 ,  정성호

IPC: H02P6/18

CPC classification number: H02P6/18 ,  H02P6/28 ,  H02P2203/03

Abstract: An apparatus for controlling a motor and a method thereof are disclosed. The apparatus comprises a current command generator generating a current command needed for driving a motor; a high frequency voltage inputting part for inputting a high frequency voltage signal needed for sensorless control of the motor; a current controller for generating a voltage command signal based on the current command and a stator current of the motor; an inverter for applying a voltage to the motor stator based on the voltage command signal and the high frequency voltage signal; an analog signal amplifier for amplifying a stator current signal of the motor to generate an amplified current signal; and an angle estimator for generating an estimated angle of a motor rotor based on the amplified current signal, wherein the current command generator generates the current command based on the estimated angle of the motor rotor.

Abstract translation: 公开了一种用于控制电动机的装置及其方法。 该装置包括产生用于驱动马达所需的电流指令的电流指令发生器; 高频电压输入部，用于输入电机无传感器控制所需的高频电压信号; 电流控制器，用于基于电流指令产生电压指令信号和电动机的定子电流; 基于所述电压指令信号和所述高频电压信号向所述电动机定子施加电压的逆变器; 模拟信号放大器，用于放大电动机的定子电流信号以产生放大的电流信号; 以及角度估计器，用于基于放大的电流信号产生电动机转子的估计角度，其中电流指令发生器基于电动机转子的估计角度产生电流指令。