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公开(公告)号：US20200044650A1
公开(公告)日：2020-02-06
申请号：US16455806
申请日：2019-06-28
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Satoru FUJITA , Ryuji YAMADA
IPC: H03K17/693 , H01H9/54 , H01H33/59 , H01R13/703 , H02H3/087 , H03K17/0814 , H03K17/12
Abstract: Provided is a switch apparatus that provides a connection or a disconnect between an input terminal and an output terminal, including a mechanical switch section and a first semiconductor switch section that are connected in series, between the input terminal and the output terminal; a second semiconductor switch section that is connected in parallel with the mechanical switch section and the first semiconductor switch section, between the input terminal and the output terminal; and a switch control section that individually controls respective ON/OFF timings of the first semiconductor switch section and the second semiconductor switch section and an open/close timing of the mechanical switch section.
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公开(公告)号：US20190068078A1
公开(公告)日：2019-02-28
申请号：US16018459
申请日：2018-06-26
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Satoru FUJITA , Ryuji YAMADA
Abstract: A power conversion device including an alternating current (AC) source, a plurality of switching units connected in series between positive and negative terminals of the AC source, each including a semiconductor switching element and having a load connected thereto, each switching unit outputting, to the load connected thereto, an input current from the AC source and a direct current (DC) output voltage that is generated through ON/OFF control of the semiconductor switching elements, a capacitor connected in parallel with the AC source and with the switching units, an inductor inserted between the capacitor and the switching units, and between the AC source and the switching units, a current measurement unit that measures a value of a current flowing from the AC source to the capacitor, and a control device that performs the ON/OFF control on the semiconductor switching elements on the basis of the measured current value.
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公开(公告)号：US20150180368A1
公开(公告)日：2015-06-25
申请号：US14638758
申请日：2015-03-04
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Qichen WANG , Satoru FUJITA
IPC: H02M7/539
CPC classification number: H02M7/539 , H02M1/10 , H02M1/12 , H02M1/42 , H02M5/293 , H02M7/487 , H02M7/49 , H02M7/537 , H02M2001/0012 , H02M2005/2932 , Y02B70/12
Abstract: In a power converter, in a period in which the polarities of output voltage and output current of a power converter differ, a pulse train voltage corresponding to a PWM signal is output by a first switching element and a second switching element being turned off, one element of a first switch element and a second switch element being turned on, and the other element being turned on and off based on an inverted signal of a PWM signal pulse width modulated in accordance with an output voltage command.
Abstract translation: 在功率转换器中，在功率转换器的输出电压和输出电流的极性不同的时段中，与PWM信号对应的脉冲串电压由第一开关元件和第二开关元件截止， 第一开关元件的元件和第二开关元件导通，并且另一元件基于根据输出电压命令调制的PWM信号脉冲宽度的反相信号而导通和截止。
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公开(公告)号：US20140368173A1
公开(公告)日：2014-12-18
申请号：US14474872
申请日：2014-09-02
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Seitaro BANNO , Satoru FUJITA
IPC: H02M5/293
CPC classification number: H02M5/293 , H02M5/2573 , H02M2005/2932
Abstract: A power conversion apparatus includes first, second, third, and fourth switching elements. In a first period, the second and third switching elements are switched ON, and first and fourth switching elements are alternately switched ON/OFF. In a second period, the first and fourth switching elements are switched ON, and the second and third switching elements are alternately switched ON/OFF. In a third period, the first and second switching elements are switched ON, and the third and fourth switching elements are switched OFF. The power conversion apparatus provides a release path for inductive energy accumulated in a reactor.
Abstract translation: 电力转换装置包括第一，第二，第三和第四开关元件。 在第一时段中，第二和第三开关元件被接通，并且第一和第四开关元件被交替地接通/断开。 在第二时段中，第一和第四开关元件被接通，并且第二和第三开关元件被交替地接通/断开。 在第三时段中，第一和第二开关元件被接通，并且第三和第四开关元件被切断。 功率转换装置提供积聚在反应器中的感应能量的释放路径。
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公开(公告)号：US20210013814A1
公开(公告)日：2021-01-14
申请号：US16801028
申请日：2020-02-25
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Satoru FUJITA , Yuto MATSUI , Yusuke ONISHI
Abstract: If current path is switched via switching, voltage overshoot exceeding the device breakdown voltage may be generated. A flying capacitor circuit is provided, having a plurality of switching devices cascade-connected on a first surface of a substrate; a plurality of rectifier devices cascade-connected on a second surface of the substrate; and at least one capacitor provided in a wiring connecting main terminals of a switching device and a rectifier device that are associated with each other and included in the plurality of switching devices and the plurality of rectifier devices; and at least part of the wiring runs sandwiching the substrate in parallel.
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Patent Agency Ranking
公开(公告)号：US20150180232A1
公开(公告)日：2015-06-25
申请号：US14642649
申请日：2015-03-09
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Kazuaki MINO , Ryuji YAMADA , Satoru FUJITA
CPC classification number: H02J1/08 , H02J1/102 , H02J7/34 , H02J7/345 , H02J7/35 , H02J9/062 , Y02B10/72 , Y02E10/766 , Y10T307/344 , Y10T307/625
Abstract: Provided is an uninterruptible power supply system. The uninterruptible power supply system includes a power supply unit including a power supply circuit converting alternating current power into direct current voltage to be supplied to a load apparatus. The uninterruptible power supply system includes a battery unit including a battery circuit. The battery circuit stores direct current power and discharges the direct current power to generate direct current voltage to be supplied to the load apparatus. The uninterruptible power supply system includes a rack in which each of the power supply unit and the battery unit is mounted.
Abstract translation: 提供不间断电源系统。 不间断电源系统包括电源单元，该电源单元包括将交流电力转换成供应给负载装置的直流电压的电源电路。 不间断电源系统包括具有电池电路的电池单元。 电池电路存储直流电力，并且释放直流电力以产生将被提供给负载装置的直流电压。 不间断电源系统包括其中安装有每个电源单元和电池单元的机架。
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公开(公告)号：US20150162850A1
公开(公告)日：2015-06-11
申请号：US14622813
申请日：2015-02-13
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Seitaro BANNO , Satoru FUJITA
IPC: H02M7/5395
CPC classification number: H02M7/5395 , H02J9/062 , H02M1/10 , H02M5/297 , H02M5/4585 , H02M7/48 , H02M2005/2932 , Y10T307/549
Abstract: In a power conversion device, a constant voltage can be supplied even when the voltage of an alternating current power supply fluctuates. A switching element Q1 and switching element Q2 are connected to a direct current power supply series circuit. A connection point of a direct current power supply and direct current power supply is a neutral point terminal, a connection point of the switching element Q1 and switching element Q2 is an output terminal, switch elements S1 and S2 are connected between the output terminal and neutral point terminal, switch elements S3 and S4 are connected between a terminal R of an alternating current power supply having a terminal S connected to the neutral point terminal, and the output terminal, and a first element and second element selected from among the switching elements Q1 and Q2 and switch elements S1 to S4 are turned on and off complementarily.
Abstract translation: 在电力转换装置中，即使在交流电源的电压发生波动的情况下也能够提供恒定的电压。 开关元件Q1和开关元件Q2连接到直流电源串联电路。 直流电源和直流电源的连接点是中性点端子，开关元件Q1和开关元件Q2的连接点是输出端子，开关元件S1和S2连接在输出端子和中性点之间 开关元件S3和S4连接在具有连接到中性点端子的端子S和输出端子的交流电源的端子R之间，以及从开关元件Q1中选择的第一元件和第二元件 并且Q2和开关元件S1至S4互补地打开和关闭。
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公开(公告)号：US20140346884A1
公开(公告)日：2014-11-27
申请号：US14453804
申请日：2014-08-07
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Satoru FUJITA , Ryuji YAMADA
CPC classification number: H02M5/458 , H02J9/062 , H02J2009/063 , H02M1/08 , H02M1/10 , H02M5/293 , H02M5/4585 , H02M2001/0054 , H02M2001/325 , Y10T307/658
Abstract: A power converter that can supply constant voltage to a load even upon fluctuation of voltage of an AC power source includes an inverter circuit resulting from connecting switching elements in series, the inverter circuit being connected to both ends of a DC power source series circuit resulting from connecting in series two DC power sources; an AC output terminal that is connected to a connection point of the switching elements; another AC output terminal that is connected to a connection point of the DC power sources; and a bidirectional switch element including one end connected to the AC output terminal U and another end connected to a terminal of an AC power source.
Abstract translation: 即使在交流电源的电压波动的情况下也能够向负载提供恒定电压的电力转换器包括由连接开关元件串联而产生的逆变器电路，逆变器电路连接到直流电源串联电路的两端 串联两个直流电源; 连接到所述开关元件的连接点的AC输出端子; 连接到直流电源的连接点的另一交流输出端子; 以及双向开关元件，其包括连接到AC输出端子U的一端和连接到AC电源的端子的另一端。
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公开(公告)号：US20140346877A1
公开(公告)日：2014-11-27
申请号：US14454284
申请日：2014-08-07
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Satoru FUJITA , Ryuji YAMADA
CPC classification number: H02J9/062 , H02J2009/063 , H02M5/297 , H02M5/458 , H02M11/00 , Y10T307/511
Abstract: A power converter can include an inverter including, connected in series, switching elements, the inverter circuit being connected to both ends of a DC power source series circuit resulting from connecting in series a DC power source and a DC power source. Also included can be an AC output terminal that is connected to a connection point of the switching element and the switching element, an AC output terminal that is connected to a connection point of the DC power source and the DC power source, a bidirectional switch element one end of which is connected to the AC output terminal and the other end of which is connected to a terminal of an AC power source and a bidirectional switch element one end of which is connected to the AC output terminal and the other end of which is connected to the AC power source.
Abstract translation: 电力转换器可以包括串联连接有开关元件的逆变器，逆变器电路连接到由直流电源和直流电源串联连接的直流电源串联电路的两端。 还可以包括连接到开关元件和开关元件的连接点的AC输出端子，连接到DC电源和DC电源的连接点的AC输出端子，双向开关元件 其一端连接到AC输出端子，另一端连接到交流电源的端子和双向开关元件，其一端连接到AC输出端子，另一端是 连接到交流电源。
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公开(公告)号：US20200321874A1
公开(公告)日：2020-10-08
申请号：US16794219
申请日：2020-02-18
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Satoru FUJITA
IPC: H02M3/158 , H02M7/5387
Abstract: There is provided a power conversion apparatus including: a first power supply terminal and a second power supply terminal which are paired with each other; a third power supply terminal and a fourth power supply terminal which are paired with each other; 1st to nth switches sequentially connected between the first power supply terminal and the fourth power supply terminal; 1st to nth rectifier devices sequentially connected between the first power supply terminal and the third power supply terminal; and each of 1st to (n−1)th capacitors which is physically disposed and electrically connected between an Nth terminal between an Nth switch and a (N+1)th switch, and an Nth terminal between an Nth rectifier device and a (N+1)th rectifier device, in which the 1st to nth switches are disposed to be physically aligned with the 1st to nth rectifier devices, respectively.
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