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公开(公告)号：US08514596B2
公开(公告)日：2013-08-20
申请号：US13127641
申请日：2009-07-21
申请人： Yushi Koyama , Junichi Tsuda , Hiroshi Mochikawa
发明人： Yushi Koyama , Junichi Tsuda , Hiroshi Mochikawa
CPC分类号： H02M1/12 , H02M2001/123
摘要： The present invention includes: an inverter 1 configured to perform pulse wide modulation on an output from a DC power source 5; a first capacitor pair 41 provided at an input side of the inverter and including two capacitors serially connected to form a neutral point; a second capacitor pair 42 provided at an output side of the inverter and including two capacitors serially connected to form a neutral point; a bypass path g for a leakage current formed by connecting the neutral point of the first capacitor pair and the neutral point of the second capacitor pair to each other; at least one common mode choke coil 3 provided between the first capacitor pair and the second capacitor pair and configured to suppress a common mode current generated in the inverter; and an output filter 2 configured to convert a voltage, which is outputted from the inverter and subjected to the pulse wide modulation, into a voltage in a sine wave form.
摘要翻译： 本发明包括：逆变器1，被配置为对直流电源5的输出进行脉宽调制; 设置在逆变器的输入侧的第一电容器对41，并且包括串联连接以形成中性点的两个电容器; 设置在逆变器的输出侧的第二电容器对42，包括串联连接以形成中性点的两个电容器; 通过将第一电容器对的中性点和第二电容器对的中性点彼此连接而形成的漏电流的旁路路径g; 设置在第一电容器对和第二电容器对之间的至少一个共模扼流线圈3，其被配置为抑制在逆变器中产生的共模电流; 以及输出滤波器2，被配置为将从逆变器输出的并经过脉宽调制的电压转换为正弦波形的电压。
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公开(公告)号：US09257248B2
公开(公告)日：2016-02-09
申请号：US13685908
申请日：2012-11-27
CPC分类号： H02H3/18 , G05F3/02 , H01H47/00 , H03K17/00 , H03K17/567 , H03K17/687 , Y10T307/74
摘要： According to one embodiment, a switch includes a first element with a first withstand voltage, a second element whose withstand voltage is lower than the first withstand voltage, a diode which is connected between a positive electrode of the first element and a positive electrode of the second element in such a manner that a direction from the positive electrode of the second element toward the positive electrode of the first element is a forward direction and whose withstand voltage is equal to the first withstand voltage, a negative electrode of the first element and a negative electrode of the second element being connected, and a circuit configured to apply a positive voltage to the positive terminal output a pulse lower than the first withstand voltage when the first element goes off.
摘要翻译： 根据一个实施例，开关包括具有第一耐受电压的第一元件，耐受电压低于第一耐受电压的第二元件，连接在第一元件的正极和第一元件的正极之间的二极管 第二元件，使得从第二元件的正极朝向第一元件的正极的方向为正方向，其耐受电压等于第一耐受电压，第一元件的负极和 连接第二元件的负极，并且配置为当正极端子施加正电压时，当第一元件断开时，输出比第一耐受电压低的脉冲。
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3.发明授权公开(公告)号：US08472215B2
公开(公告)日：2013-06-25
申请号：US13547552
申请日：2012-07-12
申请人： Yushi Koyama , Junichi Tsuda , Hiroshi Mochikawa
发明人： Yushi Koyama , Junichi Tsuda , Hiroshi Mochikawa
CPC分类号： H02M1/126 , H02M7/48 , H02M2001/007 , H02M2001/123
摘要： According to one embodiment, a grid-tie inverter includes: a inverter performing pulse width modulation for a DC voltage; a first capacitor circuit connected to an input side of the inverter so as to form a neutral point; a second capacitor circuit connected to an output side of the inverter so as to form a neutral point; a common mode current bypass channel formed by connecting the neutral points of the first capacitor circuit and the second capacitor circuit; a grounded capacitor provided between the bypass channel and a ground; a first common mode choke coil unit including a common mode choke coil at least one of between the first capacitor circuit and the inverter and between the inverter and the second capacitor circuit; and an output filter converting a pulse width-modulated voltage outputted from the inverter into a sine AC voltage.
摘要翻译： 根据一个实施例，并网逆变器包括：对DC电压执行脉冲宽度调制的逆变器; 连接到逆变器的输入侧的第一电容器电路，以形成中性点; 连接到逆变器的输出侧以形成中性点的第二电容器电路; 通过连接第一电容器电路的中性点和第二电容器电路而形成的共模电流旁路通道; 旁路通道和地之间设置的接地电容器; 第一共模扼流线圈单元，包括在所述第一电容器电路和所述逆变器之间以及所述反相器和所述第二电容器电路之间的至少一个的共模扼流线圈; 以及将从逆变器输出的脉宽调制电压转换为正弦AC电压的输出滤波器。
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公开(公告)号：US20110216568A1
公开(公告)日：2011-09-08
申请号：US13127641
申请日：2009-07-21
申请人： Yushi Koyama , Junichi Tsuda , Hiroshi Mochikawa
发明人： Yushi Koyama , Junichi Tsuda , Hiroshi Mochikawa
IPC分类号： H02M7/5387
CPC分类号： H02M1/12 , H02M2001/123
摘要： The present invention includes: an inverter 1 configured to perform pulse wide modulation on an output from a DC power source 5; a first capacitor pair 41 provided at an input side of the inverter and including two capacitors serially connected to form a neutral point; a second capacitor pair 42 provided at an output side of the inverter and including two capacitors serially connected to form a neutral point; a bypass path g for a leakage current formed by connecting the neutral point of the first capacitor pair and the neutral point of the second capacitor pair to each other; at least one common mode choke coil 3 provided between the first capacitor pair and the second capacitor pair and configured to suppress a common mode current generated in the inverter; and an output filter 2 configured to convert a voltage, which is outputted from the inverter and subjected to the pulse wide modulation, into a voltage in a sine wave form.
摘要翻译： 本发明包括：逆变器1，被配置为对直流电源5的输出进行脉宽调制; 设置在逆变器的输入侧的第一电容器对41，并且包括串联连接以形成中性点的两个电容器; 设置在逆变器的输出侧的第二电容器对42，包括串联连接以形成中性点的两个电容器; 通过将第一电容器对的中性点和第二电容器对的中性点彼此连接而形成的漏电流的旁路路径g; 设置在第一电容器对和第二电容器对之间的至少一个共模扼流线圈3，其被配置为抑制在逆变器中产生的共模电流; 以及输出滤波器2，被配置为将从逆变器输出的并经过脉宽调制的电压转换为正弦波形的电压。
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公开(公告)号：US20140133198A1
公开(公告)日：2014-05-15
申请号：US14080456
申请日：2013-11-14
IPC分类号： H02M7/5387
CPC分类号： H02J3/1857 , H02M2007/4835 , Y02E40/26
摘要： 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.
摘要翻译： 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。
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