-
公开(公告)号：US10906403B2
公开(公告)日：2021-02-02
申请号：US16665306
申请日：2019-10-28
发明人： Yuichi Ahiko , Kotaro Nakamura , Hiroki Shimoyama
摘要： Provided is a collected current monitoring device enabling an analysis of collected current in each current collector while allowing a reduced equipment cost. The collected current monitoring device of the present disclosure is installed in a railroad vehicle including current collectors, main transformers, and main converters. The collected current monitoring device includes: a supply current sensor configured to measure a current supplied to a freely-selected one of the main transformers, at least one current-sensor-between-current-collectors disposed in each communication path connecting two adjacent ones of the current collectors and configured to measure a current flowing in the communication path, and a processor configured to calculate a current flowing in each of the current collectors based on the current measured by the supply current sensor and the current measured by the at least one current-sensor-between-current-collectors, and on a distribution ratio of the currents supplied to the main transformers.
-
公开(公告)号：US10343526B2
公开(公告)日：2019-07-09
申请号：US15771673
申请日：2016-11-01
发明人： Yuichi Ahiko , Kotaro Nakamura , Hiroki Shimoyama
摘要： A collected-current monitoring device includes a current-value obtaining unit for obtaining current values I1 and I2; a first RMS-calculation unit for calculating a root mean square (RMS) 1 of the current value I1 at a window width W; a second RMS-calculation unit for calculating a root mean square (RMS) 2 of the current value I2 at the window width W; a determining unit for determining whether a combination of the RMS 1 and the RMS 2 satisfies an abnormality condition; an abnormality-signal output unit for outputting an abnormality signal when the abnormality condition is satisfied; an information-obtaining unit for obtaining railway vehicle information; and a setting unit for setting a set-parameter that includes at least one of the window width W or the abnormality condition depending on the railway vehicle information.
-
公开(公告)号：USD867208S1
公开(公告)日：2019-11-19
申请号：US29621467
申请日：2017-10-09
-
公开(公告)号：US10828988B2
公开(公告)日：2020-11-10
申请号：US16081223
申请日：2017-03-01
发明人： Yuichi Ahiko , Kotaro Nakamura , Hiroki Shimoyama
摘要： Provided is a collected current monitoring device. A transformer current acquisition unit acquires a current value Ip of a current flowing through a part of a plurality of transformers. A total collected current calculation unit calculates a current value Iall of a collected current supplied by a plurality of current collectors from the current value Ip by using a following Equation (1): Iall=Ip×(Mall/Mp). A collected current acquisition unit acquires a current value IX of a collected current supplied by the current collector(s) other than one current collector. The collected current calculation unit calculates a current value IY of a collected current supplied by the one current collector by subtracting the current value IX from the current value Iall.
-
公开(公告)号：USD884557S1
公开(公告)日：2020-05-19
申请号：US29588585
申请日：2016-12-21
-
公开(公告)号：US10005362B2
公开(公告)日：2018-06-26
申请号：US15108201
申请日：2014-12-15
发明人： Hirokazu Kato , Hiroki Shimoyama , Kei Sakanoue , Toshiyuki Uchida , Tomoyuki Makino , Hiroaki Otani , Manato Mori
CPC分类号： B60L3/0061 , B60L9/28 , B60L2200/26 , B60L2210/30 , B60L2210/40 , B60L2240/12 , B60L2240/32 , B60L2240/421 , B60L2240/427 , B60L2240/429 , B60L2240/527 , B60L2240/529 , B60L2250/16 , B60L2270/40 , B62D65/005 , G01R31/007 , Y02T10/646 , Y02T10/7241
摘要： An electric vehicle control device includes: a plurality of motors capable of transmitting motive power to a wheel of an electric vehicle; an inverter that supplies electric power to drive the motors; and a controller that controls the inverter and compares, when the electric vehicle drives under a certain velocity condition, a q-axis voltage feedforward value VqFF and a q-axis voltage command value Vq* used for controlling driving of the motors, to detect an occurrence of miswire between the motors and the inverter when the following inequation is satisfied: VqFF≥1.5·Vq*.
-
公开(公告)号：US20200047621A1
公开(公告)日：2020-02-13
申请号：US16534307
申请日：2019-08-07
摘要： The present disclosure provides a collected current monitoring device installed on a railroad vehicle comprising a first current collector and a second current collector. The collected current monitoring device comprises a detector that detects a first current flowing to the first current collector and a second current flowing to the second current collector, and a determiner that determines whether it is necessary to control collected current of the railroad vehicle based on the first current and the second current detected by the detector. The determiner determines that it is necessary to control the collected current when a sum of a first non-energized time during which the first current is not flowing and a second non-energized time during which the second current is not flowing in a specified counting time exceeds a threshold value.
-
公开(公告)号：US20190391189A1
公开(公告)日：2019-12-26
申请号：US16447319
申请日：2019-06-20
发明人： Hironobu Sunami , Kazuki Tanaka , Yoshitsugu Morita , Isamu Makara , Yuichi Ahiko , Kotaro Nakamura , Hiroki Shimoyama
摘要： A collected current monitoring device is provided which includes a current-value obtaining unit that obtains a current value I1 and a current value I2, a first RMS-calculation unit that calculates a root mean square RMS1, a second RMS-calculation unit that calculates a root mean square RMS2, an Iu calculation unit that calculates an imbalance current Iu, a change calculation unit that calculates an amount of change ΔIu, an average calculation unit that calculates a time average value aveΔIu, a determining unit that determines whether the time average value aveΔIu is larger than a threshold value, and a signal output unit that outputs an abnormality signal when the time average value aveΔIu is larger than the threshold value.
-
公开(公告)号：US10377240B2
公开(公告)日：2019-08-13
申请号：US15771673
申请日：2016-11-01
发明人： Yuichi Ahiko , Kotaro Nakamura , Hiroki Shimoyama
摘要： A collected-current monitoring device includes a current-value obtaining unit for obtaining current values I1 and I2; a first RMS-calculation unit for calculating a root mean square (RMS) 1 of the current value I1 at a window width W; a second RMS-calculation unit for calculating a root mean square (RMS) 2 of the current value I2 at the window width W; a determining unit for determining whether a combination of the RMS 1 and the RMS 2 satisfies an abnormality condition; an abnormality-signal output unit for outputting an abnormality signal when the abnormality condition is satisfied; an information-obtaining unit for obtaining railway vehicle information; and a setting unit for setting a set-parameter that includes at least one of the window width W or the abnormality condition depending on the railway vehicle information.
-
10.发明授权公开(公告)号：US09654031B2
公开(公告)日：2017-05-16
申请号：US15177338
申请日：2016-06-08
发明人： Kei Sakanoue , Hirokazu Kato , Hiroki Shimoyama , Tomotaka Nishijima , Junichi Ishii , Yasushi Matsumoto , Toshie Kikuchi
IPC分类号： H02P5/46 , H02P5/74 , B60L3/00 , B60L3/12 , B60L11/18 , B60L15/00 , B60W20/00 , H02M1/32 , H02M7/5387 , H02P5/747
CPC分类号： H02P5/74 , B60L3/0061 , B60L3/12 , B60L11/1803 , B60L15/007 , B60L2210/30 , B60L2210/40 , B60L2220/12 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2240/526 , B60L2240/527 , B60L2240/529 , B60W20/00 , H02M1/32 , H02M7/53873 , H02P5/747 , Y02T10/644 , Y02T10/645 , Y02T10/646 , Y02T10/7005 , Y02T10/7241
摘要： A controlling apparatus includes a storage unit for storing, for each sampling period, a combination of a primary frequency of connected induction motors and the amplitude of a voltage command value, and a gradient detection unit for calculating a value corresponding to an increase in the amplitude of the voltage command value divided by an increase in the primary frequency, and for outputting a failure signal upon determining, when a result of the division is less than a predetermined reference value, that the plurality of induction motors include at least one induction motor having a phase sequence that includes incorrect wiring with respect to the power converter.
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.018 秒)
