公开(公告)号：US10374532B2

公开(公告)日：2019-08-06

申请号：US15660140

申请日：2017-07-26

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Joonsung Park ,  Jinhong Kim ,  Byongjo Hyon ,  Junhyuk Choi

IPC: H02P6/12 ,  H02P6/08 ,  H02P29/024 ,  H02P6/24 ,  H02P6/18

Abstract: Disclosed are an apparatus, system and method for detecting, based on a mathematical model, a fault of a permanent magnet motor driven by a square wave. A fault diagnosis apparatus for the permanent magnet motor includes a current voltage measurement unit, a phase shift time calculation unit, and a control unit.

公开(公告)号：US10910968B2

公开(公告)日：2021-02-02

申请号：US16451192

申请日：2019-06-25

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Joonsung Park ,  Junhyuk Choi ,  Jinhong Kim ,  Byongjo Hyon ,  Yongsu Noh ,  Dongmyoung Joo

IPC: H03K5/00 ,  H02P6/182 ,  H02P6/10

Abstract: The present disclosure provides a motor drive device and a motor drive system for improving a control stability despite an imbalance in zero crossing points in a sensorless motor of which position of a rotor is estimated by a counter electromotive force. The motor drive device includes: a position detector configured to detect a rotational position of a rotor of a motor by detecting a plurality of zero crossing points of a counter electromotive force induced in the motor; and a controller configured to control the motor by estimating a phase change timing based on a time interval between a current zero crossing point and a previous zero crossing point of a same state as the current zero crossing point among the plurality of zero crossing points detected by the position detector.

公开(公告)号：US08891263B2

公开(公告)日：2014-11-18

申请号：US13712550

申请日：2012-12-12

Applicant: Korea Electronics Technology Institute

Inventor： Insoung Jung ,  Junhyuk Choi ,  Bon Gwan Gu ,  Joonsung Park ,  Jinhong Kim

IPC: H02M5/44 ,  H02M7/5387 ,  H02M1/08 ,  H03K17/567 ,  H02M5/453 ,  H02M1/00

CPC classification number: H02M1/08 ,  H02M7/5387 ,  H02M2001/0009 ,  H03K17/567 ,  H03K2217/0027 ,  H03K2217/0081

Abstract: An inverter apparatus having a power supply circuit includes a converter circuit for rectifying AC power into DC power, a smoothening circuit for smoothening the rectified DC power, an inverter circuit for converting the smoothened DC into AC at a variable frequency through a plurality of switches to control a load, and a current detection circuit for detecting overcurrent from the smoothened DC supplied from the inverter circuit, wherein the inverter circuit applies bootstrap power for driving the switches to the current detection circuit to use the bootstrap power as power of the current detection circuit. When bootstrap power for driving switch gates is used, it is possible to use the bootstrap power as the power of the current detection circuit by adding the auxiliary circuit composed of a small number of passive elements.

Abstract translation: 具有电源电路的逆变器装置包括：将AC电力整流为DC电力的转换电路，对整流后的直流电力进行平滑化的平滑化电路;逆变器电路，通过多个开关将平滑的DC以可变频率转换为AC; 控制负载;以及电流检测电路，用于检测来自逆变器电路的平滑化DC的过电流，其中，所述逆变器电路将用于驱动开关的自举电力施加到电流检测电路，以使用自举功率作为电流检测电路的功率 。 当使用用于驱动开关门的自举电源时，通过添加由少量无源元件组成的辅助电路，可以使用自举功率作为电流检测电路的功率。

公开(公告)号：US20130163294A1

公开(公告)日：2013-06-27

申请号：US13712550

申请日：2012-12-12

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Insoung JUNG ,  Junhyuk Choi ,  Bon Gwan Gu ,  Joonsung Park ,  Jinhong Kim

IPC: H02M1/08

CPC classification number: H02M1/08 ,  H02M7/5387 ,  H02M2001/0009 ,  H03K17/567 ,  H03K2217/0027 ,  H03K2217/0081

Abstract: An inverter apparatus having a power supply circuit includes a converter circuit for rectifying AC power into DC power, a smoothening circuit for smoothening the rectified DC power, an inverter circuit for converting the smoothened DC into AC at a variable frequency through a plurality of switches to control a load, and a current detection circuit for detecting overcurrent from the smoothened DC supplied from the inverter circuit, wherein the inverter circuit applies bootstrap power for driving the switches to the current detection circuit to use the bootstrap power as power of the current detection circuit. When bootstrap power for driving switch gates is used, it is possible to use the bootstrap power as the power of the current detection circuit by adding the auxiliary circuit composed of a small number of passive elements.

Abstract translation: 具有电源电路的逆变器装置包括：将AC电力整流为DC电力的转换电路，对整流后的直流电力进行平滑化的平滑化电路;逆变器电路，通过多个开关将平滑的DC以可变频率转换为AC; 控制负载;以及电流检测电路，用于检测来自逆变器电路的平滑化DC的过电流，其中，所述逆变器电路将用于驱动开关的自举电力施加到电流检测电路，以使用自举功率作为电流检测电路的功率 。 当使用用于驱动开关门的自举电源时，通过添加由少量无源元件组成的辅助电路，可以使用自举功率作为电流检测电路的功率。