专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20220109382A1 POWER CONVERSION DEVICE 有权
公开(公告)号：US20220109382A1
公开(公告)日：2022-04-07
申请号：US17460990
申请日：2021-08-30
申请人： FUJI ELECTRIC CO., LTD. , HONDA MOTOR CO., LTD.
发明人： Nobuhisa ANDO , Hiroki KATSUMATA , Masahiko SATO
IPC分类号： H02M7/797 , H02M1/36 , B60L53/60 , G01R31/52
摘要： A power conversion device includes a power converter to output AC power by converting input DC power, an electric leakage detector to detect electric leakage in a power supply line through which the AC power output by the power converter flows when the AC power is being output by the power converter, and a power conversion controller configured to control power conversion of the power converter. The power conversion controller is configured to stop power conversion operation of the power converter based on a detection result of the electric leakage detector.

2. 发明申请

US20210325463A1 POWER CONVERSION DEVICE 有权
公开(公告)号：US20210325463A1
公开(公告)日：2021-10-21
申请号：US17218858
申请日：2021-03-31
申请人： FUJI ELECTRIC CO., LTD. , HONDA MOTOR CO., LTD.
发明人： Hiroki KATSUMATA , Nobuhisa ANDO , Shinichi YOKOYAMA
IPC分类号： G01R31/327 , G01R31/00 , B60R16/03
摘要： A power conversion device includes a power converter, a relay, and a welding detector. The welding detector includes a first resistor connected to a terminal of the relay on a first side, a capacitor and a second resistor, both of which are connected to a terminal of the relay on a second side, an application unit to apply an inspection signal to the relay via the capacitor and the second resistor, and a determiner connected between the capacitor and the second resistor, the determiner detecting a signal based on application of the inspection signal by the application unit to determine whether or not the relay is welded.

3. 发明申请

US20160036319A1 POWER FACTOR CORRECTION CIRCUIT 有权
标题翻译：功率因数校正电路
公开(公告)号：US20160036319A1
公开(公告)日：2016-02-04
申请号：US14882415
申请日：2015-10-13
申请人： FUJI ELECTRIC CO., LTD.
发明人： Hiroki KATSUMATA
IPC分类号： H02M1/42 , H02M7/06
CPC分类号： H02M1/4208 , H02M1/14 , H02M1/42 , H02M1/4225 , H02M1/4233 , H02M1/44 , H02M7/06 , Y02B70/126
摘要： A power factor correction circuit includes a rectifier that rectifies AC power supply voltage, a series circuit of an inductor and a semiconductor switch connected between the rectifier circuit output terminals, and a series circuit of a diode and a smoothing capacitor connected to both ends of the semiconductor switch, a load connected to both ends of the smoothing capacitor, so that the power factor on the input side of the rectifier circuit is corrected by the switching operation of the semiconductor switch. This power factor correction circuit includes a control circuit that controls the switching frequency of the semiconductor switch such that the switching frequency becomes maximum when the ripple of a current flowing through the inductor becomes maximum. According to this power factor correction circuit, normal mode noise can be reduced, and the size of a filter circuit can be decreased.
摘要翻译：功率因数校正电路包括：整流器，对交流电源电压进行整流;电感器的串联电路;连接在整流电路输出端子之间的半导体开关;以及二极管和平滑电容器的串联电路，半导体开关，连接到平滑电容器的两端的负载，使得通过半导体开关的开关操作来校正整流电路的输入侧的功率因数。该功率因数校正电路包括：控制电路，其控制半导体开关的开关频率，使得当流过电感器的电流的纹波变得最大时，开关频率变为最大。根据该功率因数校正电路，可以降低正常模式噪声，并且可以减小滤波电路的尺寸。

4. 发明申请

US20190170798A1 EVALUATION METHOD, COMBINED EVALUATION METHOD, EVALUATION APPARATUS, AND COMBINED EVALUATION APPARATUS 审中-公开
公开(公告)号：US20190170798A1
公开(公告)日：2019-06-06
申请号：US16261497
申请日：2019-01-29
申请人： FUJI ELECTRIC CO., LTD.
发明人： Hiroki KATSUMATA , Michio TAMATE , Miwako FUJITA , Tamiko ASANO , Yuhei SUZUKI , Takashi KAIMI , Yuta SUNASAKA , Tadanori YAMADA , Ryu ARAKI , Bao Cong HIU
IPC分类号： G01R29/08
摘要： The radiated noise of a semiconductor device is conveniently evaluated, and the radiated noise of an apparatus equipped with the semiconductor device is estimated. An evaluation method including: making a semiconductor device that is connected parallel to a load by a load cable, perform a switching operation; measuring common-mode current flowing through the load cable during the switching operation; and outputting an evaluation benchmark for radiated noise based on the common-mode current, and an evaluation apparatus are provided.

5. 发明申请

US20230017346A1 POWER CONVERSION DEVICE 有权
公开(公告)号：US20230017346A1
公开(公告)日：2023-01-19
申请号：US17948916
申请日：2022-09-20
申请人： FUJI ELECTRIC CO., LTD.
发明人： Naoki MUKAIYAMA , Hiroki KATSUMATA
IPC分类号： H02M1/14 , H02M7/219 , H02M3/335 , H02M1/00
摘要： A power conversion device includes a filter circuit unit between a power conversion unit and a smoothing capacitor for smoothing a pulsating flow accompanying power conversion in the power conversion unit to absorb at least a part of a high-frequency component of the pulsating flow.

6. 发明申请

US20220109383A1 POWER CONVERSION DEVICE 有权
公开(公告)号：US20220109383A1
公开(公告)日：2022-04-07
申请号：US17461067
申请日：2021-08-30
申请人： FUJI ELECTRIC CO., LTD.
发明人： Nobuhisa ANDO , Hiroki KATSUMATA
IPC分类号： H02M7/797 , H02M1/36 , B60L53/60 , G01R31/52
摘要： A power conversion device includes an electric leakage detector, a failure determiner to output a pulse current to reproduce, in a simulated manner, electric leakage, and a power conversion controller configured to control power conversion. The power conversion controller is configured to determine a failure of the electric leakage detector depending on whether or not a pulse width of a pulse current as an electric leakage detection signal acquired by the electric leakage detector is within a predetermined range.

7. 发明申请

US20190170807A1 EVALUATION METHOD, ESTIMATION METHOD, EVALUATION APPARATUS, AND COMBINED EVALUATION APPARATUS 审中-公开
公开(公告)号：US20190170807A1
公开(公告)日：2019-06-06
申请号：US16260130
申请日：2019-01-29
申请人： FUJI ELECTRIC CO., LTD.
发明人： Hiroki KATSUMATA , Michio TAMATE , Miwako FUJITA , Tamiko ASANO , Yuhei SUZUKI , Takashi KAIMI , Yuta SUNASAKA , Tadanori YAMADA , Ryu ARAKI , Bao Cong HIU
IPC分类号： G01R31/26 , G01R31/00
摘要： The radiated noise of a semiconductor device is conveniently evaluated, and the radiated noise of an apparatus equipped with the semiconductor device is estimated. An evaluation method and an evaluation apparatus are provided, including: causing a semiconductor device to perform a switching operation; measuring voltage variation occurring between main terminals of the semiconductor device during the switching operation; and outputting an evaluation benchmark for radiated noise of the semiconductor device based on the voltage variation. The outputting the evaluation benchmark may include calculating the voltage variation in the semiconductor device for each frequency component as the evaluation benchmark.

8. 发明申请

US20140368131A1 MOTOR DRIVE DEVICE 有权
标题翻译：电机驱动装置
公开(公告)号：US20140368131A1
公开(公告)日：2014-12-18
申请号：US14476120
申请日：2014-09-03
申请人： FUJI ELECTRIC CO., LTD.
发明人： Hiroki KATSUMATA , Masakazu GEKINOZU
IPC分类号： B60L11/18 , H02P5/74 , H02P23/00
CPC分类号： B60L11/1814 , B60L7/14 , B60L11/1803 , B60L11/1816 , B60L15/007 , B60L2210/10 , B60L2210/30 , B60L2210/40 , B60L2220/54 , B60L2220/56 , H02P5/74 , Y02T10/641 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7072 , Y02T10/7216 , Y02T10/7241 , Y02T90/127 , Y02T90/14
摘要： A motor drive device includes a bridge circuit 10 having a plurality of legs with switch elements 101 in upper and lower arms. High frequency AC voltage output from the bridge circuit 10, when it is connected to an AC power supply 1, is converted into a DC voltage via a transformer 21 and an AC/DC conversion circuit 11, thus charging the battery 2. Also, the DC voltage of the battery 2 is converted into an AC voltage by the bridge circuit 10 when the AC power supply 1 is cut off from the bridge circuit 10, and supplied to the alternating current motor 3. Because of this, the isolating transformer 21 can be driven at high frequency while the motor driving power conversion circuit is also used for battery charging, and a reduction in size and reduction in cost of the overall device are achieved.
摘要翻译：电动机驱动装置包括桥接电路10，桥接电路10具有多个腿部，在上臂和下臂中具有开关元件101。从桥式电路10输出的高频交流电压，当连接到交流电源1时，通过变压器21和AC / DC转换电路11转换成直流电压，从而对电池2充电。另外，当交流电源1从桥接电路10断开时，电池2的直流电压被桥接电路10转换成交流电压，并提供给交流电动机3.因此，隔离变压器21可以在电动机驱动电力转换电路也用于电池充电的同时以高频率驱动，并且实现了整体装置的尺寸的减小和成本的降低。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式