-
公开(公告)号：US11011964B2
公开(公告)日：2021-05-18
申请号：US16301957
申请日：2017-05-19
摘要： A cage induction motor includes a rotor core that is rotatable about a central axis, and a shaft to which the rotor core is fixed. The rotor core includes an annular yoke and a plurality of spokes. The yoke supports at least one conductor. The plurality of spokes are arranged apart from one another in a circumferential direction of the yoke, are provided between the yoke and the shaft, and support the yoke.
-
公开(公告)号：US10666130B2
公开(公告)日：2020-05-26
申请号：US16127991
申请日：2018-09-11
发明人： Kenji Sato , Hirokazu Kato , Takafumi Fukushima , Hiroaki Otani , Tomoyuki Makino , Toshiyuki Uchida , Manato Mori
摘要： According to one embodiment, an electric power conversion system includes a convertor, a detector, a delay controller, and a determinator. The detector is configured to detect information related to a voltage of electric power converted by the converter. The delay controller is configured to delay a conversion operation start of the converter by a first predetermined time with respect to a supply start time at which supply of the electric power is started. The determinator is configured to perform a first determination on the basis of a detection result detected by the detector before elapse of the first predetermined time from the supply start tune, and to perform a second determination on the basis of a detection result detected by the detector after the elapse of the first predetermined time from the supply start time.
-
公开(公告)号：US10525838B2
公开(公告)日：2020-01-07
申请号：US15623818
申请日：2017-06-15
发明人： Kenji Sato , Masayuki Ueno , Takafumi Fukushima , Shigekazu Okada , Kotaro Oda , Hiroaki Otani , Yasuomi Maki , Kenichi Kikkawa , Tsunehito Fujita , Manato Mori
摘要： A power conversion system includes a transformer, a power conversion device for travel, a power conversion device for auxiliary power sources, and an electrical storage device. The power conversion device for auxiliary power sources includes a first AC to DC conversion unit, a power conversion unit for AC loads, and a power conversion unit for DC loads. The power conversion unit for AC loads converts DC power into AC power and supplies it to an AC load. The power conversion unit for DC loads converts DC power produced through conversion by the first AC to DC conversion unit into DC power and supplies it to a DC load. The electrical storage device is connected to power lines connecting DC power output terminals of the first AC to DC conversion unit and DC power input terminals of both the power conversion units for AC and DC loads. When power supplied from a tertiary winding of the transformer to the first AC to DC conversion unit is reduced, the electrical storage device discharges power corresponding to the power reduction.
-
公开(公告)号：US10538162B2
公开(公告)日：2020-01-21
申请号：US15624267
申请日：2017-06-15
发明人： Takafumi Fukushima , Shigekazu Okada , Kotaro Oda , Yasuomi Maki , Tsunehito Fujita , Hiroaki Otani , Kenichi Kikkawa , Manato Mori
IPC分类号： B60L1/00 , H02J4/00 , H02J9/00 , H02M7/219 , H02M1/32 , H02M7/12 , B60L9/00 , H02J7/34 , B60L53/24 , H02P27/06 , H02M1/00
摘要： A power conversion system includes an AC to DC conversion circuit, a voltage detector, a step-down chopper circuit, a power conversion device for auxiliary power sources, and a control unit. The AC to DC conversion circuit converts AC power supplied from overhead wires via a transformer into DC power. The voltage detector detects a voltage of AC power supplied from the transformer. The step-down chopper circuit steps down the voltage of DC power produced through conversion by the AC to DC conversion circuit. The power conversion device for auxiliary power sources converts the DC power stepped down by the step-down chopper circuit into power for driving loads mounted in an electric vehicle and supplies it to the loads. The control unit controls the AC to DC conversion circuit and the step-down chopper circuit such that the voltage of AC power detected by the voltage detector approaches a reference voltage.
-
5.发明申请公开(公告)号：US20180222501A1
公开(公告)日：2018-08-09
申请号：US15883827
申请日：2018-01-30
发明人： Kenji Sato , Takafumi Fukushima , Norihiro Suyama
CPC分类号： B61L3/006 , B60L9/00 , B60L9/28 , B60L2200/26 , B60L2210/00 , B60L2210/30 , B60L2240/527 , B60L2240/529 , B61C3/00 , G01R15/18 , G01R19/2513 , H01F27/40 , H01F27/42 , H01F38/14 , H02P27/08
摘要： A voltage estimating device for a power supply line according to one aspect of the present disclosure includes a voltage detector, a current detector, a voltage calculator. The voltage calculator calculates a magnitude of alternating primary voltage that a primary winding in a transformer receives from a power supply line based on a magnitude of tertiary voltage in the transformer detected by the voltage detector, a magnitude of output current in the transformer detected by the current detector, and correlation information. The correlation information indicates a correlation between a voltage ratio and the magnitude of the output current, and the voltage ratio represents a ratio of the magnitude -of the primary voltage to the magnitude of the tertiary voltage.
-
-
-
-
搜索结果
5 条记录 (耗时 0.02 秒)
