公开(公告)号：US09039112B2

公开(公告)日：2015-05-26

申请号：US12964085

申请日：2010-12-09

Applicant: Yoshiaki Murayama ,  Takeshi Murase ,  Masao Kato ,  Shigeyasu Nagoshi ,  Minoru Teshigawara ,  Minako Kato ,  Susumu Hirosawa ,  Yutaka Kano ,  Satoshi Azuma ,  Kentarou Muro

Inventor： Yoshiaki Murayama ,  Takeshi Murase ,  Masao Kato ,  Shigeyasu Nagoshi ,  Minoru Teshigawara ,  Minako Kato ,  Susumu Hirosawa ,  Yutaka Kano ,  Satoshi Azuma ,  Kentarou Muro

IPC: B41J29/38 ,  B41J25/00 ,  B41J2/21 ,  B41J2/175

CPC classification number: B41J25/001 ,  B41J2/2146 ,  B41J2002/17569

Abstract: In a line-head type inkjet printing apparatus that ejects a plurality of types of inks, an inkjet printing apparatus is provided in which the change of its ejection properties different depending on the type of ink is prevented from occurring. The line-head type printing apparatus includes an acquisition unit that counts the ejection number of liquid from each of print heads in each of a plurality of print heads. Furthermore, the printing apparatus compares the ejection number of liquid from each of the print heads counted by the acquisition unit with a threshold value set for each of the print heads. The printing apparatus includes a change unit that can move a holder in the main scanning direction when the counted ejection number of liquid exceeds the threshold value set for the print head.

Abstract translation: 在喷射多种油墨的线头型喷墨打印设备中，提供了一种喷墨打印设备，其中防止其喷墨性能的变化根据墨水的类型而不同。 行头式打印装置包括：采集单元，其计算多个打印头中的每一个中的每个打印头的液体的喷射次数。 此外，打印装置将由获取单元计数的每个打印头的液体的喷射次数与为每个打印头设置的阈值进行比较。 打印装置包括当所计数的液体喷射数量超过为打印头设定的阈值时能够沿主扫描方向移动保持器的改变单元。

公开(公告)号：US08861235B2

公开(公告)日：2014-10-14

申请号：US13382707

申请日：2010-05-07

Applicant: Satoshi Azuma ,  Takeshi Oi ,  Akihiko Iwata

Inventor： Satoshi Azuma ,  Takeshi Oi ,  Akihiko Iwata

IPC: H02M7/48 ,  H02M7/49

CPC classification number: H02M7/49 ,  Y02B70/1483

Abstract: A power converting apparatus includes a main inverter having a high-voltage DC power supply that operates at a low frequency employing SiC MOSFETs having a high withstand voltage exceeding 600 V and a sub-inverter having a low-voltage capacitor that operates through high-frequency PWM employing Si MOSFETs having a low withstand voltage. With AC sides of the main inverter and the sub-inverter connected in series, the power converting apparatus outputs AC power having a prescribed voltage waveform by adding voltages individually generated by the main inverter and the sub-inverter. Specifically, the SiC MOSFETs are used only in the main inverter of which devices are required to have a high withstand voltage and the Si MOSFETs are used in the sub-inverter of which devices may have a relatively low withstand voltage, whereby conduction loss is reduced with an inexpensive circuit configuration.

Abstract translation: 电力转换装置包括：主逆变器，其具有使用高耐受电压超过600V的SiC MOSFET的低频工作的高压直流电源以及具有通过高频工作的低压电容器的副逆变器 PWM采用具有低耐受电压的Si MOSFET。 主逆变器和副逆变器的AC侧串联连接，电力转换装置通过加上由主逆变器和副逆变器分别产生的电压，输出具有规定电压波形的交流电力。 具体来说，SiC MOSFET仅用于需要具有高耐压的器件的主逆变器中，并且在其逆变器中使用Si MOSFET，其中器件可能具有相对低的耐受电压，从而降低了传导损耗 具有廉价的电路配置。

公开(公告)号：US20140240948A1

公开(公告)日：2014-08-28

申请号：US14348345

申请日：2011-09-30

Applicant: Ryo Yokozutsumi ,  Akihiro Murahashi ,  Takushi Jimichi ,  Satoshi Azuma ,  Yasuhiro Shiraki

Inventor： Ryo Yokozutsumi ,  Akihiro Murahashi ,  Takushi Jimichi ,  Satoshi Azuma ,  Yasuhiro Shiraki

IPC: H05K9/00 ,  H05K7/20 ,  H02P27/04

CPC classification number: H05K9/0064 ,  H02M1/12 ,  H02M7/003 ,  H02M7/44 ,  H02M7/48 ,  H02M7/537 ,  H02P27/04 ,  H05K7/20409

Abstract: A power conversion device includes an inverter that drives a motor; a fin that cools down the inverter; a first core including a through hole that allows passage of a positive side conductor that connects a power supply system and the inverter and a negative side conductor that grounds the inverter; a ground conductor that grounds the fin; a ground conductor that grounds a motor yoke via a capacitor; and a ground conductor including one end that is connected to the negative side conductor or the ground conductor and the other end that is grounded.

Abstract translation: 电力转换装置包括：驱动电动机的逆变器; 冷却变频器的翅片; 第一铁芯，包括允许通过连接电源系统和逆变器的正侧导体的通孔和使逆变器接地的负侧导体; 接地导体， 接地导体，通过电容器接地电机磁轭; 以及接地导体，其包括连接到负侧导体或接地导体的一端和接地的另一端。

公开(公告)号：US08755205B2

公开(公告)日：2014-06-17

申请号：US13254497

申请日：2010-03-04

Applicant: Satoshi Azuma ,  Takuya Sakai

Inventor： Satoshi Azuma ,  Takuya Sakai

IPC: H02M5/45

CPC classification number: H02P27/06 ,  H02M7/48 ,  H02M2001/123

Abstract: Three-phase windings 11-13 and 21-23 of a first common-mode transformer 1 and a second common-mode transformer 2 are connected in series through connecting lines 8r-8t, respectively. The windings 11-13 are connected to an unillustrated AC power supply by connecting lines 91r-91t. The windings 21-23 are connected to a three-phase motor by connecting lines 93r-93t and through a converter and an inverter which are unillustrated. A winding 14 for common-mode voltage detection detects high-frequency leakage currents flowing through the connecting lines 91r-91t as a common-mode voltage V1, and an output voltage V2 obtained by voltage amplification by a voltage amplifier 3 is applied to a winding 24 for common-mode voltage application in such a manner that the output voltage V2 works in generally the same direction as the common-mode voltage V1, thereby canceling out the high-frequency leakage currents through the windings 21-23. Since a voltage amplification method is used, it is possible to reduce the high-frequency leakage currents with a simpler configuration as compared to a conventional current amplification method.

Abstract translation: 第一共模变压器1和第二共模变压器2的三相绕组11-13和21-23分别通过连接线8r-8t串联连接。 绕组11-13通过连接线91r-91t连接到未示出的AC电源。 绕组21-23通过连接线93r-93t并通过未示出的转换器和逆变器连接到三相电动机。 用于共模电压检测的绕组14检测作为共模电压V1流过连接线91r-91t的高频漏电流，并且通过电压放大器3通过电压放大获得的输出电压V2被施加到绕组 24，用于共模电压施加，使得输出电压V2与共模电压V1大致相同的方向工作，从而消除通过绕组21-23的高频漏电流。 由于使用电压放大方法，与传统的电流放大方法相比，可以以更简单的配置来降低高频漏电流。

公开(公告)号：US08649193B2

公开(公告)日：2014-02-11

申请号：US13636209

申请日：2011-04-01

Applicant: Takuya Sakai ,  Satoshi Azuma

Inventor： Takuya Sakai ,  Satoshi Azuma

IPC: H02M1/12 ,  H02M1/16

CPC classification number: H02M1/15 ,  H02M2001/123

Abstract: First windings of a first common mode transformer and second windings of a second common mode transformer are connected in series via connection lines. The windings are connected to an AC power supply via connection lines. The first windings are connected to a three-phase motor via connection lines, a converter, and an inverter. High-frequency leakage currents flowing in the connection lines are detected as a common mode voltage by a winding for common mode voltage detection. An output voltage is inputted via a filter to a voltage amplifier unit that amplifies the output voltage, and the amplified voltage is applied to a winding via a capacitor in substantially a same direction as a direction of the common mode voltage. As a result, leakage currents are reduced by induced voltages on the windings.

Abstract translation: 第一共模变压器的第一绕组和第二共模变压器的第二绕组通过连接线串联连接。 绕组通过连接线连接到交流电源。 第一绕组经由连接线，转换器和逆变器连接到三相电动机。 通过用于共模电压检测的绕组将连接线中流过的高频漏电流检测为共模电压。 通过滤波器将输出电压输入到放大输出电压的电压放大器单元，并且将放大的电压经由电容器沿与共模电压的方向基本相同的方向施加到绕组。 结果，漏电流由绕组上的感应电压降低。

公开(公告)号：US20130257332A1

公开(公告)日：2013-10-03

申请号：US13738213

申请日：2013-01-10

Applicant: Kosuke NAKANO ,  Tetsuya KOJIMA ,  Satoshi AZUMA ,  Isao KEZOBO ,  Ryuichi TAKIGUCHI

Inventor： Kosuke NAKANO ,  Tetsuya KOJIMA ,  Satoshi AZUMA ,  Isao KEZOBO ,  Ryuichi TAKIGUCHI

IPC: H02K11/00 ,  H02P23/00

CPC classification number: H02K11/001 ,  H02M7/5395 ,  H02M2001/0009 ,  H02P27/08 ,  H02P29/0241

Abstract: An electric motor driving apparatus having a failure detection circuit includes: a bridge circuit driving an electric motor; a PWM control circuit generating voltage instruction for driving the electric motor; a PWM signal generation circuit generating a PWM signal; a DC current detection circuit detecting DC current of the bridge circuit; a phase current calculation circuit calculating output phase current of the bridge circuit, based on the DC current and PWM signal; and a failure detection circuit detecting failure of the DC current detection circuit. The failure detection circuit determines failure of the DC current detection circuit from the DC current detected values in a zero voltage period in which the high-potential-side arms of the bridge circuit are all ON and in a zero voltage period in which the low-potential-side arms are all ON.

Abstract translation: 具有故障检测电路的电动机驱动装置包括：驱动电动机的桥式电路; 产生用于驱动电动机的电压指令的PWM控制电路; 产生PWM信号的PWM信号产生电路; 直流电流检测电路，检测桥式电路的直流电流; 基于直流电流和PWM信号计算桥式电路的输出相电流的相电流计算电路; 以及检测直流电流检测电路的故障的故障检测电路。 故障检测电路根据桥电路的高电位侧臂全部为ON的零电压期间的直流电流检测值和低电压周期的零电压期间，确定直流电流检测电路的故障， 潜在手臂全部打开。

公开(公告)号：US08345453B2

公开(公告)日：2013-01-01

申请号：US12677181

申请日：2007-09-21

Applicant: Daisuke Itoh ,  Satoshi Azuma ,  Kengo Sugahara ,  Masataka Yabuuchi

Inventor： Daisuke Itoh ,  Satoshi Azuma ,  Kengo Sugahara ,  Masataka Yabuuchi

IPC: H02M5/45

CPC classification number: H02M5/45 ,  B60L9/24 ,  B60L2200/26 ,  B60L2270/147 ,  H01F2017/065 ,  H02M1/126 ,  H02M1/44 ,  H02M2001/0064

Abstract: The object is to effectively reduce the resonant current flowing inside a converter unit and an inverter unit in a power conversion apparatus for an electric vehicle. The power conversion apparatus includes a converter unit that converts an alternating-current power into a direct-current power, an inverter unit that converts the direct-current power into an intended alternating-current power and supplies the intended alternating-current power to an electric motor that drives an electric vehicle, a housing that accommodates the converter unit and the inverter unit and a part of which is connected to ground, and a magnetic core that is disposed inside the housing and that suppresses the resonant current flowing between the converter unit and the inverter unit.

Abstract translation: 本发明的目的在于有效地减少电动车辆的电力转换装置中的转换器单元和逆变器单元内的谐振电流。 电力转换装置包括将交流电力转换为直流电力的转换器单元，将直流电力转换为期望的交流电力的逆变器单元，并将期望的交流电力提供给电力 驱动电动车辆的电动机，容纳转换器单元和逆变器单元并且其一部分连接到地的壳体和设置在壳体内部的磁芯，并且抑制在转换器单元和 逆变器单元。

公开(公告)号：US20120218800A1

公开(公告)日：2012-08-30

申请号：US13503675

申请日：2010-05-26

Applicant: Takushi Jimichi ,  Satoshi Azuma

Inventor： Takushi Jimichi ,  Satoshi Azuma

IPC: H02M7/537

CPC classification number: H02M7/53803 ,  H02M7/53873 ,  H02M2001/0025

Abstract: A leg includes: two semiconductor device groups connected in series and a division current is generated in a current which flows in the semiconductor device group between elements in the semiconductor device groups, a current sensor which detects a current which flows in the semiconductor device group, a voltage command generation unit which calculates a voltage command value to be outputted, a voltage drop calculating unit which calculates a voltage drop of the semiconductor device group by using a current value which is detected by the current sensor and voltage drop characteristics including a division characteristic of the semiconductor device group, and a switching control unit which corrects a voltage command value which is generated by the voltage command generation unit by using the voltage drop which is calculated so as to control ON/OFF of the switching element.

Abstract translation: 一个腿包括：串联连接的两个半导体器件组，并且在半导体器件组中的元件之间的半导体器件组中的电流中产生分流电流，检测在半导体器件组中流动的电流的电流传感器， 计算要输出的电压指令值的电压指令产生单元，使用由电流传感器检测的电流值和包括分频特性的电压降特性来计算半导体器件组的电压降的电压降计算单元 以及开关控制单元，其通过使用被计算以控制开关元件的接通/断开的电压降来校正由电压指令生成单元生成的电压指令值。

公开(公告)号：US20120206520A1

公开(公告)日：2012-08-16

申请号：US13368086

申请日：2012-02-07

Applicant: Kengo Nieda ,  Kazuya Koizumi ,  Satoshi Azuma ,  Koichiro Kawaguchi ,  Toshiki Takeuchi ,  Shigeru Toriihara

Inventor： Kengo Nieda ,  Kazuya Koizumi ,  Satoshi Azuma ,  Koichiro Kawaguchi ,  Toshiki Takeuchi ,  Shigeru Toriihara

IPC: B41J29/38

CPC classification number: B41J29/38

Abstract: A recording apparatus includes a recording head, a roller configured to convey a recording medium, an acquisition unit configured to acquire information about a conveyance amount for conveying the recording medium per a predetermined rotation amount of the roller, a recording timing generation unit configured to generate a plurality of timing signals for performing recording for one raster line according to a rotation of the roller during one rotation thereof, and a drive signal generation unit configured to generate a drive reference signal for performing the recording for the one raster line on the recording medium at a predetermined interval based on the conveyance amount information and the timing signal.

Abstract translation: 一种记录装置，包括记录头，被配置为传送记录介质的辊，获取单元，被配置为获取关于每个辊的预定旋转量传送记录介质的输送量的信息;记录定时生成单元， 多个定时信号，用于根据所述辊在其一次旋转期间的旋转执行用于一个光栅线的记录;以及驱动信号生成单元，被配置为产生用于对所述记录介质上的所述一条光栅线执行记录的驱动参考信号 基于传送量信息和定时信号以预定间隔。

公开(公告)号：US20110273503A1

公开(公告)日：2011-11-10

申请号：US12963660

申请日：2010-12-09

Applicant: Satoshi Azuma ,  Shigeyasu Nagoshi ,  Minoru Teshigawara ,  Yoshiaki Murayama ,  Susumu Hirosawa ,  Yutaka Kano ,  Takeshi Murase ,  Kentarou Muro ,  Masao Kato ,  Minako Kato

Inventor： Satoshi Azuma ,  Shigeyasu Nagoshi ,  Minoru Teshigawara ,  Yoshiaki Murayama ,  Susumu Hirosawa ,  Yutaka Kano ,  Takeshi Murase ,  Kentarou Muro ,  Masao Kato ,  Minako Kato

IPC: B41J29/38

CPC classification number: B41J11/0015 ,  B41J2/165 ,  B41J2/16552 ,  B41J2/1714

Abstract: A printing apparatus includes a plurality of inkjet print heads to which humidified air is supplied to retain the humidity in the print heads. Ink colors for the plurality of heads are arranged in a sequence corresponding to ink characteristics. The plurality of print heads are arranged in a sequence such that a print head configured to eject ink characterized by having a larger amount of volatile components evaporated within a predetermined time is located in a more upstream area.

Abstract translation: 打印设备包括多个喷墨打印头，供应加湿空气以将湿度保持在打印头中。 多个头部的墨水颜色以对应于墨水特性的顺序排列。 多个打印头按照这样的顺序布置，使得构造成喷射墨水的打印头位于更上游区域中，其特征在于具有在预定时间内蒸发的较大量的挥发性成分。