公开(公告)号：US20170310229A1

公开(公告)日：2017-10-26

申请号：US15649792

申请日：2017-07-14

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Seiji FUJISAKI ,  Sadao ISHll ,  Kozo IDE

IPC: H02M3/335 ,  H02M3/337

CPC classification number: H02M3/33576 ,  H02M3/28 ,  H02M3/33507 ,  H02M3/3376 ,  H02M2001/0048

Abstract: A DC-to-DC converter includes a first switching circuit, a second switching circuit, a transformer positioned between an AC side of the first switching circuit and an AC side of the second switching circuit, an inductance element positioned between the transformer and at least one of the AC side of the first switching circuit and the AC side of the second switching circuit, and control circuitry that operates the first switching circuit and the second switching circuit. The control circuitry sets a predetermined operation ratio of the first switching circuit and the second switching circuit to each other, and adjusts, based on the predetermined operation ratio, a first operation period of the first switching circuit and a second operation period of the second switching circuit.

公开(公告)号：US20150270787A1

公开(公告)日：2015-09-24

申请号：US14608190

申请日：2015-01-29

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Seiji FUJISAKI ,  Mamoru TAKAKI ,  Shinya MORIMOTO ,  Masato HIGUCHI

IPC: H02M7/5387 ,  H02M1/08 ,  H02M1/12

CPC classification number: H02M7/53871 ,  G05F1/563 ,  G05F1/61 ,  H02M1/08 ,  H02M1/126 ,  H02M3/158 ,  H02M7/5387 ,  H02M2001/0054 ,  H02M2001/007 ,  Y02B70/1491

Abstract: A power converter according to one embodiment includes a controller that switches between a boosting operation in a boost circuit and a pulse-width modulation operation in a single-phase inverter. The controller modifies an output from a voltage detection filter based on a delay compensating value for compensating a detection delay introduced by the voltage detection filter, when switching is performed the boosting operation in the boost circuit to the PWM operation in the single-phase inverter.

Abstract translation: 根据一个实施例的功率转换器包括在升压电路中的升压操作和单相逆变器中的脉冲宽度调制操作之间切换的控制器。 当在单相逆变器中将升压电路中的升压操作切换到PWM操作时，控制器基于用于补偿由电压检测滤波器引入的检测延迟的延迟补偿值来修改来自电压检测滤波器的输出。

公开(公告)号：US20150280612A1

公开(公告)日：2015-10-01

申请号：US14663460

申请日：2015-03-20

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kozo IDE ,  Tetsumi NARITA ,  Seiji FUJISAKI ,  Mamoru TAKAKI ,  Shinya MORIMOTO

IPC: H02M7/5387

CPC classification number: H02M7/53871 ,  H02J3/385 ,  H02M3/156 ,  H02M7/5395 ,  H02M2001/0025 ,  H02M2001/007 ,  Y02E10/58

Abstract: A power converter according to embodiments includes a boost circuit, a single-phase inverter, a current controller, and a power conversion controller. The current controller generates a voltage reference based on a difference between current output from the single-phase inverter and a current reference. The power conversion controller controls the single-phase inverter to generate a first portion of the AC voltage, and controls the boost circuit to generate a second portion of the AC voltage. The first portion corresponds to the voltage reference of which an absolute value is smaller than the voltage of the DC power supply. The second portion corresponds to the voltage reference of which an absolute value is greater than the voltage of the DC power supply.

Abstract translation: 根据实施例的功率转换器包括升压电路，单相逆变器，电流控制器和电力转换控制器。 电流控制器基于来自单相逆变器的电流输出与电流基准之间的差异产生电压基准。 电力转换控制器控制单相逆变器以产生交流电压的第一部分，并且控制升压电路以产生交流电压的第二部分。 第一部分对应于绝对值小于直流电源的电压的基准电压。 第二部分对应于绝对值大于直流电源的电压的参考电压。

公开(公告)号：US20140126251A1

公开(公告)日：2014-05-08

申请号：US14064199

申请日：2013-10-28

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Seiji FUJISAKI ,  Katsutoshi YAMANAKA

IPC: H02M5/458

CPC classification number: H02M5/4585 ,  H02M1/10 ,  H02M7/539

Abstract: A current-source power converting apparatus includes: a converter unit configured to convert an AC or DC voltage input from a power supply into a predetermined DC voltage; an inverter unit configured to convert a DC voltage supplied from the converter unit via a DC reactor into an AC voltage and output the AC voltage; and a controller configured to control the inverter unit at a modulation factor in correspondence with a step up/step down ratio based on a ratio of an output voltage from the inverter unit to an input voltage from the power supply.

Abstract translation: 电流源电力转换装置包括：转换器单元，被配置为将从电源输入的AC或DC电压转换为预定的DC电压; 逆变器单元，被配置为将从所述转换器单元经由DC电抗器提供的DC电压转换为AC电压并输出所述AC电压; 以及控制器，被配置为基于来自所述逆变器单元的输出电压与来自所述电源的输入电压的比率，以与升压/降压比对应的调制因子来控制所述逆变器单元。