公开(公告)号：US09985545B2

公开(公告)日：2018-05-29

申请号：US15649792

申请日：2017-07-14

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Seiji Fujisaki ,  Sadao Ishii ,  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：US09509233B2

公开(公告)日：2016-11-29

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: H02M7/538 ,  H02M7/5387 ,  H02M3/156 ,  H02J3/38 ,  H02M7/5395 ,  H02M1/00

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：US09484839B2

公开(公告)日：2016-11-01

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 ,  G05F1/563 ,  G05F1/61 ,  H02M1/08 ,  H02M1/12 ,  H02M3/158 ,  H02M1/00

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。