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1. 发明授权

US10008937B1 Apparatus for controlling DC link voltage in power cell of medium-voltage inverter 有权
公开(公告)号：US10008937B1
公开(公告)日：2018-06-26
申请号：US15800167
申请日：2017-11-01
申请人： LSIS CO., LTD. , Seoul National University R&DB FOUNDATION
发明人： Jong-Je Park , Seung-Ki Sul , Jeong-Mock Yoo , Hyun-Sam Jung
IPC分类号： H02J1/00 , H02M3/158 , H02M3/155 , H02M1/12 , H02M7/48 , H02M3/28 , H02M1/42
摘要： Disclosed herein is an apparatus for controlling DC link voltage in power cells of a medium-voltage inverter. The apparatus controls DC link voltage in single-phase I/O power cells in the medium-voltage inverter, by way of using a first average power based on a positive sequence voltage and a positive sequence current to output a first DC link voltage reference for controlling the average value of the DC link voltages, and using a second average power based on a negative sequence voltage and a positive sequence current or a positive sequence voltage and a negative sequence current to output a second DC link voltage reference for controlling an interphase DC link voltage.

2. 发明授权

US11038436B2 Inverter system 有权
公开(公告)号：US11038436B2
公开(公告)日：2021-06-15
申请号：US16637433
申请日：2018-07-18
申请人： LSIS CO., LTD. , SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
发明人： Sung-Guk Ahn , Seung-Ki Sul , Hyun-Sam Jung , Jeong-Mock Yoo
IPC分类号： H02M7/487 , H02M7/483 , H01F30/12 , H02M1/12 , H02M7/217 , H02M7/537
摘要： A unit power cell of an inverter system, according to one embodiment of the present invention, comprises: a first leg including first and fourth switching elements, which are connected in series to each other, second and third switching elements, which are connected in series with each other between a connection point of the first and second switching elements and a smoothing unit, and first, second, third and fourth diodes, which are inversely and respectively connected in parallel with the first, second, third and fourth switching elements; and a second leg connected in parallel with the first leg and including fifth and sixth switching elements, which are connected in series to each other, and fifth and sixth diodes, which are inversely and respectively connected in parallel with the fifth and sixth switching elements.

3. 发明授权

US11177750B2 Motor control apparatus 有权
公开(公告)号：US11177750B2
公开(公告)日：2021-11-16
申请号：US16644939
申请日：2018-09-19
申请人： SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
发明人： Seung-Ki Sul , Yong-Cheol Kwon , Joohyun Lee
IPC分类号： H02P21/00 , H02P21/22 , H02P21/18 , H02P21/20 , H02P6/10 , H02P6/18 , H02P27/06
摘要： A motor control apparatus according to one embodiment of the present invention comprises: a current controller for generating a voltage command signal on the basis of a torque command for driving a motor and a fundamental wave current of the motor; a high frequency voltage generator for generating a high frequency voltage signal for injection into the voltage command signal; an inverter for applying a voltage to the motor on the basis of the voltage command signal and the high frequency voltage signal; an angle estimator for generating an estimated angle of a rotor of the motor on an estimated coordinate system on the basis of a current signal of the motor; and a compensator for adding a first compensation signal (icomp) to the current signal (isig), wherein the first compensation signal (icomp) may be related to the torque command and the estimated angle.

4. 发明授权

US09954475B2 Motor driving apparatus 有权
公开(公告)号：US09954475B2
公开(公告)日：2018-04-24
申请号：US15069955
申请日：2016-03-14
申请人： Samsung Electronics Co., Ltd. , Seoul National University R&DB Foundation
发明人： Je Hyung Cho , Seung-Ki Sul , Se Hwa Choe , Han Sol Seo
IPC分类号： H02P25/00 , H02P27/06 , H02P27/14 , H02M7/487
CPC分类号： H02P27/06 , H02M7/487 , H02P27/14
摘要： A motor driving apparatus includes a rectifying circuit to rectify an AC power supplied from an external AC power source, one pair of film capacitors to output a DC voltage and a neutral point voltage by removing a ripple of a voltage rectified by the AC-DC conversion unit, a 3-level inverter to supply a driving current to a motor using the DC voltage applied from the DC link unit, and a control module to control the 3-level inverter. The control module includes a motor speed control module to control the rotation of the motor, a DC voltage control module to stabilize the DC voltage, a neutral point voltage control module to stabilize the neutral point voltage, and a stabilizing voltage limiting module to control the DC voltage control module and the neutral point voltage control module according to an output of the motor speed control module.

5. 发明申请

US20160268950A1 MOTOR DRIVING APPARATUS 有权
标题翻译：电机驱动装置
公开(公告)号：US20160268950A1
公开(公告)日：2016-09-15
申请号：US15069955
申请日：2016-03-14
申请人： Samsung Electronics Co., Ltd. , Seoul National University R&DB Foundation
发明人： Je Hyung Cho , Seung-Ki Sul , Se Hwa Choe , Han Sol Seo
IPC分类号： H02P27/06
CPC分类号： H02P27/06 , H02M7/487 , H02P27/14
摘要： A motor driving apparatus includes a rectifying circuit to rectify an AC power supplied from an external AC power source, one pair of film capacitors to output a DC voltage and a neutral point voltage by removing a ripple of a voltage rectified by the AC-DC conversion unit, a 3-level inverter to supply a driving current to a motor using the DC voltage applied from the DC link unit, and a control module to control the 3-level inverter. The control module includes a motor speed control module to control the rotation of the motor, a DC voltage control module to stabilize the DC voltage, a neutral point voltage control module to stabilize the neutral point voltage, and a stabilizing voltage limiting module to control the DC voltage control module and the neutral point voltage control module according to an output of the motor speed control module.
摘要翻译：一种电动机驱动装置，包括整流电路，用于整流由外部交流电源供给的交流电力，一对薄膜电容器，通过除去通过AC-DC转换整流的电压的纹波来输出直流电压和中性点电压单元，使用从直流链路单元施加的直流电压向马达提供驱动电流的3电平逆变器以及用于控制3电平逆变器的控制模块。控制模块包括一个电机速度控制模块，用于控制电动机的旋转，一个直流电压控制模块，用于稳定直流电压;一个中性点电压控制模块，用于稳定中性点电压;以及一个稳定电压限制模块来控制直流电压控制模块和中性点电压控制模块根据电机速度控制模块的输出。

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