公开(公告)号：US20020064461A1

公开(公告)日：2002-05-30

申请号：US09984050

申请日：2001-10-26

Applicant: LG ELECTRONICS INC.

Inventor： Jae Yoo Yoo ,  Jae Chun Lee ,  Min Kyu Hwang ,  Chel Woong Lee

IPC: F04B049/06

CPC classification number: F04B35/045 ,  F04B49/065 ,  F04B2201/0206 ,  F04B2203/0401 ,  F04B2203/0402

Abstract: Disclosed is a circuit for driving a linear compressor enabling to reduce a cost in detecting voltage and current applied to a linear compressor by decreasing he number of precision resistors. The present invention includes a linear compressor controlling a cooling capacity by varying a stroke through an up-and-down straight-line motion of a piston, an electric circuit part supplying the linear compressor with voltage and current in accordance with a switching signal of an AC switching device through a current detect resistor and the AC switching device wherein a ground terminal is connected between the current detect resistor and linear compressor, a voltage detection unit detecting the voltage applied to the linear compressor by taking the ground terminal as a reference and outputting the detected voltage, a stroke calculation unit receiving the detected current and voltage to calculate the stroke, a speed or an acceleration speed of the linear compressor, and a microcomputer inputting a switching signal for controlling the voltage applied to the linear compressor into the switching device to make a present stroke follow an initial stroke reference.

Abstract translation: 公开了一种用于驱动线性压缩机的电路，其能够通过减少精密电阻器的数量来降低检测施加到线性压缩机的电压和电流的成本。 本发明包括线性压缩机，其通过活塞的上下直线运动改变行程来控制冷却能力，电路部分根据一个活塞的切换信号向线性压缩机提供电压和电流 交流开关装置，通过电流检测电阻器和交流开关装置，其中接地端子连接在电流检测电阻器和线性压缩机之间，电压检测单元通过以接地端子作为参考来检测施加到线性压缩机的电压，并输出 所述检测电压，行程计算单元，接收所检测的电流和电压以计算所述行程，所述线性压缩机的速度或加速度;以及微型计算机，将用于控制施加到所述线性压缩机的电压的开关信号输入到所述开关装置 使当前行程跟随初始笔画参考。

公开(公告)号：US20040067140A1

公开(公告)日：2004-04-08

申请号：US10385475

申请日：2003-03-12

Applicant: LG Electronics Inc.

Inventor： Jae Yoo Yoo ,  Chel Woong Lee ,  Ji Won Sung ,  Kyuk Lee

IPC: F04B049/06

CPC classification number: F04B49/06 ,  F04B35/045 ,  F04B2201/0206 ,  F04B2203/0401 ,  F04B2203/0402 ,  G05B2219/43182

Abstract: In an apparatus and a method for controlling operation of a compressor, by removing deviation generated by resistance and inductance and removing an error in a stroke estimation value of a compressor, operation of the compressor can be accurately controlled. The apparatus includes a counter electromotive force detector for detecting a counter electromotive force generated at a motor of a compressor. A stroke calculator calculates a stroke estimation value of the compressor on the basis of the counter electromotive force, and a stroke controller controls a stroke of the compressor by varying a voltage applied to the motor on the basis of the calculated stroke estimation value and a stroke reference value.

Abstract translation: 在用于控制压缩机的操作的装置和方法中，通过消除由电阻和电感产生的偏差并消除压缩机的行程估计值中的误差，可以精确地控制压缩机的操作。 该装置包括用于检测在压缩机的电动机处产生的反电动势的反电动势检测器。 行程计算器基于反电动势计算压缩机的行程估计值，并且行程控制器基于计算的行程估计值和行程来改变施加到电动机的电压来控制压缩机的行程 参考值。

公开(公告)号：US20040066163A1

公开(公告)日：2004-04-08

申请号：US10406307

申请日：2003-04-04

Applicant: LG Electronics Inc.

Inventor： Jae Yoo Yoo ,  Chel Woong Lee ,  Ji Won Sung ,  Hyuk Lee

IPC: G05D023/275

CPC classification number: F04B35/045 ,  F04B49/06 ,  F04B2201/0206 ,  F04B2203/0401 ,  F04B2203/0402

Abstract: An apparatus and a method are disclosed for controlling operation of a compressor capable of greatly decreasing a stroke estimation error of a compressor and controlling operation of the compressor accurately and precisely. The method includes calculating a first stroke estimation value of a compressor on the basis of current, a voltage applied to a motor of a compressor and preset parameters of the motor. Detecting a counter electromotive force of the motor and calculating a second stroke estimation value of the compressor on the basis of the detected counter electromotive force value. Determining a new stroke reference value by comparing the first stroke estimation value with the second stroke estimation value, adding or subtracting a stroke compensation value corresponding to the comparison result to or from a preset stroke reference value, and controlling a stroke of the compressor by varying a voltage applied to the motor on the basis of the determined stroke reference value and the first stroke estimation value.

公开(公告)号：US20020093327A1

公开(公告)日：2002-07-18

申请号：US09989396

申请日：2001-11-21

Applicant: LG Electronics, Inc.

Inventor： Yoo Jae Yoo ,  Jae Chun Lee ,  Min Kyu Hwang ,  Chel Woong Lee

IPC: G01R023/00 ,  G01R023/12

CPC classification number: F04B35/045 ,  F04B49/065 ,  F04B2201/0202 ,  F04B2203/0201 ,  F04B2203/0202

Abstract: An apparatus for detecting shaking of stroke of a linear compressor and a method are provided. A linear compressor mis-operates due to change in an external voltage or noise because the shaking of the stroke is detected by the amounts of change in the stroke or current. In order to solve the above problem, a control apparatus of a compressor includes a stroke/current phase difference calculator for calculating the phase differences of the stroke and current using the stroke and the current, which are determined by the increase and the reduction of the stroke due to the voltage generated by a linear compressor, a phase difference change amount calculator for calculating phase difference change amounts using the calculated phase differences of the stroke and the current, a shaking detector for comparing the calculated phase difference change amounts with a reference value for determining whether the shaking of the stroke is detected, to thus determine the shaking of the stroke, and a stroke controller for receiving a stroke shaking detection signal from the stroke shaking detector and changing the stroke voltage according to the magnitude of the request of cooling capacity, which is determined by the change in load, to thus control the driving of the linear compressor, during the operation of the linear compressor.

Abstract translation: 提供了一种用于检测线性压缩机的行程抖动的装置和方法。 线性压缩机由于外部电压或噪声的变化而失灵，因为行程的振动是通过行程或电流的变化量来检测的。 为了解决上述问题，压缩机的控制装置包括行程/电流相位差计算器，用于计算使用行程和电流的行程和电流的相位差，这是通过增加和减少确定的 由线性压缩机产生的电压引起的行程;相位差变化量计算器，用于使用计算出的行程和电流的相位差计算相位差变化量;振动检测器，用于将计算出的相位差变化量与参考值进行比较 用于确定是否检测到行程的振动，从而确定行程的晃动;以及行程控制器，用于从行程抖动检测器接收行程抖动检测信号，并根据冷却请求的大小改变行程电压 容量，由负载变化决定，从而控制李的驾驶 在压缩机附近，在线性压缩机运行期间。