公开(公告)号：US20170126142A1

公开(公告)日：2017-05-04

申请号：US15335469

申请日：2016-10-27

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Hirotaka TOUJINBARA ,  Yukari Takagi ,  Masaya Yoshitomi

IPC: H02M5/458 ,  H02J3/38 ,  H02M1/08

CPC classification number: H02M5/458 ,  G05F1/67 ,  H02J3/385 ,  H02J3/386 ,  H02M7/53875 ,  H02M2001/0009 ,  Y02E10/58 ,  Y02E10/763

Abstract: A power conversion apparatus includes a power converter, a voltage detector, a determiner, and a drive controller. The power converter is configured to convert DC power input from an electric generation apparatus into AC power. The voltage detector is configured to detect a DC voltage input into the power converter. The determiner is configured to determine an output power command or an output current command based on whether the output power command or the output current command has a first level that is correlated in advance with a second level of the DC voltage detected by the voltage detector. The drive controller is configured to control the power converter based on the output power command or the output current command determined by the determiner

公开(公告)号：US20160322899A1

公开(公告)日：2016-11-03

申请号：US15135999

申请日：2016-04-22

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Hirotaka TOUJINBARA

IPC: H02M3/158 ,  H02M7/537

CPC classification number: H02M7/48 ,  H02J3/381 ,  H02J3/382 ,  H02M2001/007

Abstract: A power conversion apparatus includes power conversion circuitry that converts first power supplied from a power source into AC power corresponding to second power of a power system, and control circuitry that instructs, at a time that is determined based on a voltage across a capacitor disposed between the power system and the power conversion circuitry, the power conversion circuitry to start applying an AC voltage to the capacitor.

Abstract translation: 电力转换装置包括电力转换电路，其将从电源提供的第一电力转换为与电力系统的第二电力相对应的AC电力;以及控制电路，其指示在基于电容器之间的电压 电力系统和功率转换电路，功率转换电路开始向电容器施加AC电压。

公开(公告)号：US20170047743A1

公开(公告)日：2017-02-16

申请号：US15334878

申请日：2016-10-26

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Hirotaka TOUJINBARA ,  Takashi Kuboyama ,  Daishi Ueno

IPC: H02J3/38 ,  H02M7/5387 ,  H02M3/157

Abstract: A power conversion apparatus includes a power converter, a target command controller, a feedback controller, and a gain adjustor. The power converter is configured to convert first power supplied from a power generation source into second power. The target command controller is configured to increase or decrease a target command so as to cause the first power to follow maximum suppliable power of the power generation source. The feedback controller is configured to control the power converter by feedback control that is based on a deviation between the target command and at least one of a supplied voltage and a supplied current supplied from the power generation source to the power converter. The gain adjustor is configured to adjust a gain of the feedback control based on at least one of the supplied voltage, the supplied current, and the target command.

Abstract translation: 电力转换装置包括功率转换器，目标指令控制器，反馈控制器和增益调节器。 功率转换器被配置为将从发电源提供的第一功率转换为第二功率。 目标命令控制器被配置为增加或减少目标命令，以使得第一功率跟随发电源的最大可用功率。 反馈控制器被配置为通过基于目标命令与从发电源提供给功率转换器的供给电压和供给电流中的至少一个之间的偏差的反馈控制来控制功率转换器。 增益调节器被配置为基于所提供的电压，所提供的电流和目标命令中的至少一个来调整反馈控制的增益。

公开(公告)号：US20140319920A1

公开(公告)日：2014-10-30

申请号：US14259154

申请日：2014-04-23

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Takashi KUBOYAMA ,  Sadao ISHII ,  Hirotaka TOUJINBARA ,  Tadashi SADOHARA

IPC: H02J3/38

CPC classification number: H02J3/385 ,  Y02E10/58 ,  Y10T307/707

Abstract: A grid interconnection apparatus includes a voltage conversion section including DC/DC converters to step up or down output voltages of DC power sources. The voltage conversion section combines DC power outputs from the DC/DC converters into combined DC power and output the DC power. A power conversion section converts the DC power output from the voltage conversion section into AC power, and outputs the AC power to a power grid. A current detector detects a current input into the power conversion section. A voltage detector detects a voltage input into the power conversion section. A controller controls the DC/DC converters to maximize the power outputs from the DC power sources based on the detected current and the detected voltage.

Abstract translation: 电网互连装置包括电压转换部分，其包括用于升压或降低直流电源的输出电压的DC / DC转换器。 电压转换部分将DC / DC转换器的直流电源输出组合成直流电，并输出直流电源。 电力转换部将从电压变换部输出的直流电力转换为交流电力，将交流电力输出到电网。 电流检测器检测到电力转换部分的电流输入。 电压检测器检测输入到电力转换部分的电压。 控制器控制DC / DC转换器，以根据检测到的电流和检测到的电压最大化来自直流电源的功率输出。