公开(公告)号：US20130279213A1

公开(公告)日：2013-10-24

申请号：US13858949

申请日：2013-04-09

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Takahiro SAEKI ,  Hideaki IURA ,  Shoji KONAKAHARA

IPC: H02M7/68 ,  H02M5/04

CPC classification number: H02M7/68 ,  H02M5/04 ,  H02M5/4585 ,  H02M7/797 ,  H02P21/36

Abstract: A power regeneration apparatus includes a power conversion unit, an AC reactor, a voltage detecting unit, a phase detecting unit, a drive control unit for controlling the power conversion unit based on a phase detection value, and a reactive current component detecting unit. The phase detecting unit detects the phase of the AC power supply. The reactive current component detecting unit detects a reactive current component of a current. The drive control unit includes a phase correction section. The phase correction section corrects the phase detection value based on the reactive current component.

Abstract translation: 电力再生装置包括功率转换单元，交流电抗器，电压检测单元，相位检测单元，用于基于相位检测值控制功率转换单元的驱动控制单元和无功电流分量检测单元。 相位检测单元检测交流电源的相位。 无功电流分量检测单元检测电流的无功电流分量。 驱动控制单元包括相位校正部。 相位校正部根据无功电流分量来校正相位检测值。

公开(公告)号：US20230032286A1

公开(公告)日：2023-02-02

申请号：US17757865

申请日：2020-11-16

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Toshihiro HANADA ,  Shoji KONAKAHARA ,  Keisei INOKI ,  Masashiro TANAKA

IPC: H02M5/293 ,  H02M1/00 ,  H02M5/297

Abstract: A power conversion device 1 includes a matrix converter circuit 10 including a plurality of switching elements and being configured to perform bidirectional power conversion between alternating current power on a primary side and alternating current power on a secondary side, a power conversion control unit 114 configured to switch on and off the plurality of switching elements in unison with a carrier wave to cause an alternating current on the secondary side to follow a control command, and a carrier wave changing unit 116 configured to change, based on a nearness level between a frequency on the primary side and a frequency on the secondary side, a frequency of the carrier wave.