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公开(公告)号：US20170021733A1
公开(公告)日：2017-01-26
申请号：US15218561
申请日：2016-07-25
Applicant: DENSO CORPORATION
Inventor： Youhei KONDOU , Yusuke SHINDO
CPC classification number: B60L11/08 , B60L11/1809 , H02M1/08 , H02M7/53871 , H02M7/797 , H02M2001/0009 , H02M2001/0029 , H02M2001/327 , H03K17/145
Abstract: In an apparatus for controlling switching operations of switching elements of a power converter to convert input power to output power, a drive controller is configured to generate a drive control instruction indicative of predetermined switching operations of the switching elements, and output the drive control instruction. A driver is configured to drive, in accordance with the drive control instruction, the switching elements, so that the switching elements perform the predetermined switching operations. A switching speed adjuster is configured to obtain at least information indicative of atmospheric pressure, and adjust a switching speed of each of the switching elements such that the switching speed of the corresponding switching element decreases with a decrease of the atmospheric pressure.
Abstract translation: 在用于控制功率转换器的开关元件的转换操作以将输入功率转换为输出功率的装置中，驱动控制器被配置为产生指示开关元件的预定开关操作的驱动控制指令，并输出驱动控制指令。 驱动器被配置为根据驱动控制指令来驱动开关元件，使得开关元件执行预定的开关操作。 开关速度调节器被配置为至少获得指示大气压的信息，并且调节每个开关元件的切换速度，使得相应的开关元件的开关速度随着大气压力的降低而降低。
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公开(公告)号：US20160233800A1
公开(公告)日：2016-08-11
申请号：US15016923
申请日：2016-02-05
Applicant: DENSO CORPORATION
Inventor： Junichi FUKUTA , Koichi NISHIBATA , Hiroya TSUJI , Yusuke SHINDO , Shinichiro NAKATA , Yasutaka SENDA
CPC classification number: H02P6/16 , H02P29/028 , H02P29/032
Abstract: In an integrated circuit formed into a single chip, a drive signal generating unit generates drive signals for switching elements of a power conversion circuit. A monitoring unit monitors a microcomputer that calculates generation information that is information used to generate the drive signals, and determines whether or not an abnormality has occurred in the microcomputer. An angle converting unit converts an output signal of an angle sensor to rotation angle information of a rotating electric machine. A drive signal generating unit generates the drive signals for controlling driving of the rotating electric machine based on the generation information and the rotation angle information when the monitoring unit determines that an abnormality has not occurred in the microcomputer, and generates the drive signals based on the rotation angle information, without using the generation information, when the monitoring unit determines that an abnormality has occurred in the microcomputer.
Abstract translation: 在形成为单个芯片的集成电路中，驱动信号生成部生成用于电力转换电路的开关元件的驱动信号。 监视单元监视计算生成信息的微计算机，该生成信息是用于生成驱动信号的信息，并且确定微计算机中是否发生异常。 角度转换单元将角度传感器的输出信号转换为旋转电机的旋转角度信息。 驱动信号发生单元，当监视单元判断为在微型计算机中没有发生异常时，基于生成信息和旋转角度信息，生成用于控制旋转电机的驱动的驱动信号，并且基于 旋转角度信息，而不使用生成信息，当监视单元确定微计算机中已经发生异常时。
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公开(公告)号：US20150085536A1
公开(公告)日：2015-03-26
申请号：US14495128
申请日：2014-09-24
Applicant: DENSO CORPORATION
Inventor： Syun MIYAUCHI , Tsuneo MAEBARA , Yusuke SHINDO , Junichi FUKUTA
CPC classification number: B60L11/1803 , B60L11/1864 , B60L15/007 , H02M7/003 , H03K17/61 , H03K17/691 , Y02T10/645 , Y02T10/7005 , Y02T10/7061
Abstract: Upper arm connection sections and lower arm connection sections are provided in parallel. An upper arm transformer and a power supply are provided in an area opposed to the lower arm connection sections with respect to the upper arm connection sections. A power supply control section is provided in at least one of an area opposed to the upper arm connection sections with respect to the upper arm transformer, and an area which is sandwiched between at least one of the upper and lower connection sections closest to one side of the substrate positioned in a direction in which the upper arm connection sections are arranged, and the one side. The lower arm transformer is provided in an area opposed to the upper arm connection sections with respect to the lower arm connection sections. The lower arm transformer is common to at least two of the lower arm switching elements.
Abstract translation: 上臂连接部分和下臂连接部分并联设置。 在上臂连接部分相对于下臂连接部分的区域中设置上臂变压器和电源。 电源控制部分设置在与上臂连接部分相对于上臂变压器相对的区域中的至少一个区域中，并且夹在至少一个最靠近一侧的上连接部分和下连接部分之间的区域 位于沿着上臂连接部的排列方向的基板和一侧。 下臂变压器相对于下臂连接部设置在与上臂连接部相对的区域中。 下臂变压器对于至少两个下臂开关元件是共同的。
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公开(公告)号：US20210293896A1
公开(公告)日：2021-09-23
申请号：US17337957
申请日：2021-06-03
Applicant: DENSO CORPORATION
Inventor： Ryota KUBOKAWA , Masakazu KOUDA , Toru WAKIMOTO , Yusuke SHINDO , Akira SUMI
Abstract: In an insulation resistance detection apparatus, a voltage determiner determines whether a detection voltage, which has changed by at least a preset value, becomes stable at around a changed voltage value. A resistance determiner determines a value of an insulation resistance between a ground portion and a power-supply path based on a currently sampled value of the detection voltage instead of a moving average in response to determination that the detection voltage, which has changed by at least the preset value, becomes stable at around the changed voltage value.
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公开(公告)号：US20200112308A1
公开(公告)日：2020-04-09
申请号：US16592870
申请日：2019-10-04
Applicant: DENSO CORPORATION
Inventor： Tomotaka SUZUKI , Yusuke SHINDO , Yasutaka SENDA , Ken TOSHIYUKI
IPC: H03K17/687
Abstract: A drive circuit drives switches that are connected to each other in parallel. The drive circuit includes individual discharge paths, a common discharge path, blocking units, a discharge switch, off-holding switches, and a drive control unit. The drive control unit selects, as target switches to be driven to be turned on, at least two switches among the switches. The at least two switches include a first switch and a second switch. The first switch is last to be switched to an off-state among the at least two switches that are selected as the target switches and switched to an on-state. The second switch is other than the first switch among the at least two switches. The off-holding switches includes a first off-holding switch and a second off-holding switch. After switching the second off-holding switch to an on-state, the drive control unit switches the discharge switch to an on-state.
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Patent Agency Ranking
公开(公告)号：US20210293865A1
公开(公告)日：2021-09-23
申请号：US17340906
申请日：2021-06-07
Applicant: DENSO CORPORATION
Inventor： Masakazu KOUDA , Ryota KUBOKAWA , Yusuke SHINDO , Toru WAKIMOTO
Abstract: An insulation resistance detection device detects a voltage at a connection point between a coupling capacitor and a resistance in the case where a frequency signal is outputted to the resistance, and detects an insulation resistance between a ground portion and a power supply path based on a moving average value of a detection voltage. The insulation resistance detection device includes a first determination unit, a resistance detection unit, and a second determination unit. In response to a determination that the pulsation of the detection voltage is attenuated, the resistance detection unit detects the insulation resistance based on, instead of a first moving average value, a second moving average value calculated by using the detection voltage in a second range including a smaller number of detection voltages than in the first range.
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公开(公告)号：US20190181856A1
公开(公告)日：2019-06-13
申请号：US16278337
申请日：2019-02-18
Applicant: DENSO CORPORATION
Inventor： Yoshitaka KATO , Kenji KOMIYA , Yusuke SHINDO , Yoshinori HAYASHI , Kenichi WAKABAYASHI
CPC classification number: H03K17/166 , H02M1/08 , H02M1/32 , H02M3/158 , H02M7/537 , H02M7/53875 , H02M2001/0009 , H02M2001/007 , H03K2217/0081
Abstract: A semiconductor device turns on and off a power switching device having a gate terminal and output terminals between which an output current is produced by a gate voltage applied to the gate terminal. The semiconductor device includes: an output current detector detecting a current value correlated with the output current; a voltage detector detecting a voltage across the output terminals of the power switching device; a clamp circuit clamping the gate voltage at a predetermined value; and a controller controlling the clamp circuit to adjust the gate voltage based on the voltage detected by the voltage detector. The controller controls the clamp circuit to set the gate voltage to be at a minimum voltage according to the detected voltage to cause the output current to be larger than a threshold current required for detecting the short circuit in the power switching device.
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公开(公告)号：US20190157969A1
公开(公告)日：2019-05-23
申请号：US16194903
申请日：2018-11-19
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koichi NISHIBATA , Yusuke SHINDO , Tomohisa OSE , Junichi FUKUTA , Yasuhiro TERAO , Eiichiro SHIGEHARA , Keisuke HATA
IPC: H02M1/32 , H02P27/06 , H02M7/5387 , H02P29/024 , H02H1/00 , H02H7/122
CPC classification number: H02M1/32 , H02H1/0007 , H02H7/1222 , H02M1/08 , H02M7/53871 , H02P27/06 , H02P29/0241 , H03K17/18
Abstract: In a control circuit for controlling a power converter that includes a switch, a power supply circuit outputs electrical power, and a command generator generates a switching command that controls switching operations of the switch, based on the electrical power output from the power supply circuit. A failure mode determiner executes a determination of whether which of failure modes has occurred in the power supply circuit, and outputs a result of the determination. A switch controller selectively executes, based on the result of the determination, a first switch control task and a second switch control task. The first switch control task forcibly shuts down the switch independently of the switching command, and the second switch control task enables the switching operations of the switch to be continuously controlled based on the switching command.
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公开(公告)号：US20240030803A1
公开(公告)日：2024-01-25
申请号：US18372307
申请日：2023-09-25
Applicant: DENSO CORPORATION
Inventor： Ryoya KAZAOKA , Yusuke SHINDO , Shunichi KUBO , Ken TOSHIYUKI
CPC classification number: H02M1/14 , H02M7/5395 , H02P21/22 , H02J7/0047 , B60L15/007 , B60L58/16 , H02P27/08
Abstract: A power converter has a capacitor and a power conversion unit having a series-connected unit composed of an upper arm side switching element and a lower arm side switching element. The capacitor is connected in parallel with the serios connection unit. The power conversion unit supplies electric power to a motor. A controller for the power conversion unit has a frequency characteristics estimation part estimating frequency characteristics of a battery current of the battery when a current is flowing between the power convertor and the battery, a ripple current setting part determining a ripple frequency of a ripple current contained in the battery current based on the frequency characteristics of the battery current, and a control part performing a switching control of the switching elements based on the ripple frequency in order to generate the ripple current.
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公开(公告)号：US20180151708A1
公开(公告)日：2018-05-31
申请号：US15824578
申请日：2017-11-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Ken TOSHIYUKI , Yusuke SHINDO , Tomotaka SUZUKI
IPC: H01L29/739 , H03K17/16 , H03K17/082
CPC classification number: H01L29/7393 , H01L27/088 , H01L29/0696 , H03K17/0828 , H03K17/127 , H03K17/166 , H03K17/168 , H03K2217/0027 , H03K2217/0036
Abstract: A switching circuit may be provided with: a parallel circuit including a first IGBT and a second IGBT connected in parallel; a controller configured to receive a signal indicating a turn-on timing and a turn-off timing. The controller is configured to: turn on both of the first and second IGBTs at the turn-on timing, execute a first control in which one of the first and second IGBTs is turned off before the turn-off timing and the other of the first and second IGBTs is turned off at the turn-off timing in a case where current flowing through the parallel circuit is equal to or lower than a threshold value, and execute a second control in which both of the first and second IGBTs are turned off at the turn-off timing in a case where the current flowing through the parallel circuit is higher than the threshold value.
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