公开(公告)号：US08836311B2

公开(公告)日：2014-09-16

申请号：US12757491

申请日：2010-04-09

Applicant: Hiromichi Tai ,  Takeru Murao

Inventor： Hiromichi Tai ,  Takeru Murao

IPC: H02M3/156 ,  H03K17/16 ,  H02M1/08 ,  H03K17/28

CPC classification number: H02M1/08 ,  H02M1/088 ,  H03K17/168 ,  H03K17/28

Abstract: Provided is a power converter having a switching circuit wherein a surge voltage of a plurality of switching elements connected in series is suppressed and loss is not concentrated to a specific switching element. The switching circuit is provided with: a non-latching type switching element having two main terminals and one control terminal; a voltage detecting means which detects a voltage applied between the main terminals of the switching element; a control current supply for supplying the control terminal with a control signal corresponding to the voltage detected by the voltage detector; and a delay device for delaying the control signal.

Abstract translation: 提供一种具有切换电路的电力转换器，其中串联连接的多个开关元件的浪涌电压被抑制，并且损耗不集中于特定的开关元件。 开关电路具有：具有两个主端子和一个控制端子的非闭锁型开关元件; 电压检测装置，其检测施加在所述开关元件的主端子之间的电压; 控制电流源，用于向控制终端提供对应于由电压检测器检测的电压的控制信号; 以及用于延迟控制信号的延迟装置。

公开(公告)号：US20120087167A1

公开(公告)日：2012-04-12

申请号：US13330735

申请日：2011-12-20

Applicant: Atsuhiko KUZUMAKI ,  Hiroshi MOCHIKAWA ,  Takeru MURAO ,  Masahiro TAKASAKI ,  Tadao ISHIKAWA ,  Toshiaki KIKUMA

Inventor： Atsuhiko KUZUMAKI ,  Hiroshi MOCHIKAWA ,  Takeru MURAO ,  Masahiro TAKASAKI ,  Tadao ISHIKAWA ,  Toshiaki KIKUMA

IPC: H02M7/537

CPC classification number: H02M7/5387 ,  H02M7/5388

Abstract: Disclosed is a power conversion device which achieves reductions in switching loss due to a reverse recovery current and heat generation loss. Specifically disclosed is a power conversion device provided with a cascode element configured by electrically connecting a normally-on switching element and a normally-off switching element in series and connecting a gate terminal of the normally-on switching element and a source terminal of the normally-off switching element via a cascode connection diode, and a high-speed diode electrically connected in parallel with the cascode element and having a cathode region connected to a positive electrode terminal and an anode region connected to a negative electrode terminal.

Abstract translation: 公开了一种功率转换装置，其实现由于反向恢复电流和发热损失而引起的开关损耗的降低。 具体公开了一种电源转换装置，其具有通过串联电连接常开开关元件和常开开关元件而构成的共源共栅元件，并将正常开关元件的栅极端子和正常开关元件的源极端子 通过共源共栅连接二极管断开开关元件，以及与该共源共栅元件并联电连接的高速二极管，并且具有与正电极端子连接的阴极区域和与负极端子连接的阳极区域。

公开(公告)号：US20100219877A1

公开(公告)日：2010-09-02

申请号：US12757491

申请日：2010-04-09

Applicant: Hiromichi TAI ,  Takeru MURAO

Inventor： Hiromichi TAI ,  Takeru MURAO

IPC: H03K17/28

CPC classification number: H02M1/08 ,  H02M1/088 ,  H03K17/168 ,  H03K17/28

Abstract: Provided is a power converter having a switching circuit wherein a surge voltage of a plurality of switching elements connected in series is suppressed and loss is not concentrated to a specific switching element. The switching circuit is provided with: a non-latching type switching element having two main terminals and one control terminal; a voltage detecting means which detects a voltage applied between the main terminals of the switching element; a control current supply for supplying the control terminal with a control signal corresponding to the voltage detected by the voltage detector; and a delay device for delaying the control signal.

Abstract translation: 提供一种具有切换电路的电力转换器，其中串联连接的多个开关元件的浪涌电压被抑制，并且损耗不集中于特定的开关元件。 开关电路具有：具有两个主端子和一个控制端子的非闭锁型开关元件; 电压检测装置，其检测施加在所述开关元件的主端子之间的电压; 控制电流源，用于向控制终端提供对应于由电压检测器检测的电压的控制信号; 以及用于延迟控制信号的延迟装置。

公开(公告)号：US20140133198A1

公开(公告)日：2014-05-15

申请号：US14080456

申请日：2013-11-14

Applicant: Yushi Koyama ,  Yosuke Nakazawa ,  Hiroshi Mochikawa ,  Atsuhiko Kuzumaki ,  Takeru Murao

Inventor： Yushi Koyama ,  Yosuke Nakazawa ,  Hiroshi Mochikawa ,  Atsuhiko Kuzumaki ,  Takeru Murao

IPC: H02M7/5387

CPC classification number: H02J3/1857 ,  H02M2007/4835 ,  Y02E40/26

Abstract: A reactive power compensator according to an embodiment comprises: multilevel inverter circuits respectively constituting each of the three phases; a filter circuit for reducing harmonics connected between the output terminals of each of the multilevel inverter circuits and a power system interconnection terminal; and a control section for causing prescribed three-phase AC voltage to be output by controlling each of said multilevel inverter circuits. Each of the multilevel inverter circuits is constituted by connecting in series one or more single-phase full-bridge single-pulse inverters and is arranged to convert DC voltage to respective positive and negative single-pulse voltages once per cycle of the fundamental wave of the voltage instruction value.

Abstract translation: 根据实施例的无功功率补偿器包括：分别构成三相中的每一个的多电平逆变器电路; 用于减少连接在所述多电平逆变器电路中的每一个的输出端子与电力系统互连端子之间的谐波的滤波电路; 以及控制部分，用于通过控制每个所述多电平逆变器电路来输出规定的三相AC电压。 每个多电平逆变器电路通过串联连接一个或多个单相全桥单脉冲逆变器构成，并且被布置成将DC电压转换成相应的正和负单脉冲电压，每个循环的基波每次 电压指令值。

公开(公告)号：US08649198B2

公开(公告)日：2014-02-11

申请号：US13330735

申请日：2011-12-20

Applicant: Atsuhiko Kuzumaki ,  Hiroshi Mochikawa ,  Takeru Murao ,  Masahiro Takasaki ,  Tadao Ishikawa ,  Toshiaki Kikuma

Inventor： Atsuhiko Kuzumaki ,  Hiroshi Mochikawa ,  Takeru Murao ,  Masahiro Takasaki ,  Tadao Ishikawa ,  Toshiaki Kikuma

IPC: H02M7/5387 ,  H02M3/335 ,  H02M3/24 ,  H02M7/44

CPC classification number: H02M7/5387 ,  H02M7/5388

Abstract: Disclosed is a power conversion device which achieves reductions in switching loss due to a reverse recovery current and heat generation loss. Specifically disclosed is a power conversion device provided with a cascode element configured by electrically connecting a normally-on switching element and a normally-off switching element in series and connecting a gate terminal of the normally-on switching element and a source terminal of the normally-off switching element via a cascode connection diode, and a high-speed diode electrically connected in parallel with the cascode element and having a cathode region connected to a positive electrode terminal and an anode region connected to a negative electrode terminal.

Abstract translation: 公开了一种功率转换装置，其实现由于反向恢复电流和发热损失而引起的开关损耗的降低。 具体公开了一种电源转换装置，其具有通过串联电连接常开开关元件和常开开关元件而构成的共源共栅元件，并将正常开关元件的栅极端子和正常开关元件的源极端子 通过共源共栅连接二极管断开开关元件，以及与该共源共栅元件并联电连接的高速二极管，并且具有与正电极端子连接的阴极区域和与负极端子连接的阳极区域。