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公开(公告)号：US20240132049A1
公开(公告)日：2024-04-25
申请号：US18400486
申请日：2023-12-29
Applicant: DENSO CORPORATION
Inventor： Syuya KAMIZONO , Akira Sakamoto , Yuichi Handa , Masaki Amakawa , Keisuke Kawai
CPC classification number: B60W20/15 , F02N11/0859 , H02P23/04 , B60W2710/083 , F02N2200/042 , F02N2250/00
Abstract: A control apparatus for a rotating electric machine is provided. The rotating electric machine includes a moving portion that applies torque to a drive shaft of an internal combustion engine. The control apparatus acquires a rotational frequency signal that is a signal that changes depending on a rotational frequency of the moving portion per unit time. The control apparatus calculates a damping torque that is applied from the moving portion to the drive shaft to suppress vibration during operation of the internal combustion engine. The control apparatus calculates the damping torque based on the rotational frequency signal acquired by the signal acquiring unit in response to the rotating electric machine performing cranking of the internal combustion engine.
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公开(公告)号：US10256719B2
公开(公告)日：2019-04-09
申请号：US16061012
申请日：2016-11-16
Applicant: DENSO CORPORATION
Inventor： Keiichi Ando , Yuichi Handa , Kimikazu Nakamura , Kaoru Koketsu , Yuki Yamada , Seiji Iyasu , Shuji Kurauchi
Abstract: A power supply device includes a transformer, a primary semiconductor component, a secondary semiconductor component, a choke coil and a circuit board. Electronic components which include the transformer, the primary semiconductor component, the secondary semiconductor component, and the choke coil, are stacked in pairs, in a normal direction of a board. One pair forms a first stacked body and another pair to forms a second stacked body. A circuit board is interposed between the one pair of electronic components which forms the first stacked body, and also between the other pair of electronic components which forms the second stacked body.
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公开(公告)号：US11791736B2
公开(公告)日：2023-10-17
申请号：US18078772
申请日：2022-12-09
Applicant: DENSO CORPORATION
Inventor： Shuji Kurauchi , Yuichi Handa , Seiji Iyasu , Yuji Hayashi
CPC classification number: H02M3/33584 , B60L8/003 , B60L50/60 , B60L53/22 , H02J7/02 , H02J7/35 , H02M3/33573 , H02M3/33576 , B60L2210/30 , B60L2210/40 , H02J2207/20 , H02J2310/48 , H02M1/009
Abstract: A power conversion apparatus connected to three or more voltage units, includes three or more power conversion circuits connected to respective units of the three or more voltage units; and a multiport transformer connected to the three or more power conversion circuits at mutually different ports, in which at least one voltage unit of the three or more voltage units is an electrical load.
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公开(公告)号：US11201545B2
公开(公告)日：2021-12-14
申请号：US16854408
申请日：2020-04-21
Applicant: DENSO CORPORATION
Inventor： Seiji Iyasu , Yuichi Handa , Yuji Hayashi , Kaoru Koketsu
IPC: H02M3/335
Abstract: A control device is applied to a power conversion system including a first power conversion device and a second power conversion device connected in parallel with a common power supply target. The control device acquires a load output including a load current or power to be supplied to the power supply target, and control operation of the first power conversion device and the second power conversion device based on at least any of a voltage parameter including any of an input voltage and an output voltage and the load output.
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公开(公告)号：US20190123661A1
公开(公告)日：2019-04-25
申请号：US16142642
申请日：2018-09-26
Applicant: Denso Corporation
Inventor： Seiji Iyasu , Yuji Hayashi , Yuichi Handa
Abstract: An electric power conversion device has an electric power converter and a control device. The control device adjusts an output voltage of the electric power converter to approach a first current flowing a first drive switch to an instruction current during a first period in which an input voltage supplied from an AC power source has a positive polarity, and adjusts the output voltage of the electric power converter to approach a second current flowing a second drive switch to the instruction current during a second period in which the input voltage supplied from the AC power source has a negative polarity. The control device operates a switch arranged in a second current sensor during the first period, and operates a switch arranged in a first current sensor during the second period.
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Patent Agency Ranking
公开(公告)号：US10232735B2
公开(公告)日：2019-03-19
申请号：US15292905
申请日：2016-10-13
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kaoru Koketsu , Yuichi Handa , Seiji Iyasu , Takashi Nozawa
IPC: B60L11/00 , B60L15/00 , B60L11/08 , B60L8/00 , B60L11/18 , H02M1/36 , H02J1/10 , H02J7/34 , H02M3/158
Abstract: A control device for a power supply system includes a pre-charge unit, the power supply system having a main electric storage device, a smooth capacitor, a step-up circuit, an open-close switch, a voltage source and a regulation element. The regulation element regulates a current flowing from the smooth capacitor toward the open-close switch. The voltage source is connected to a connection portion between the open-close switch and the step-up circuit, and outputs an output voltage higher than a voltage of the main electric storage device before the open-close switch is shifted from a disconnection state to a connection state. The pre-charge unit executes a pre-charge of the smooth capacitor by supplying electric power from the voltage source to the smooth capacitor before the open-close switch is shifted from the disconnection state to the connection state.
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公开(公告)号：US11837961B2
公开(公告)日：2023-12-05
申请号：US17534820
申请日：2021-11-24
Applicant: DENSO CORPORATION
Inventor： Katsuhiro Ichihashi , Yuichi Handa
CPC classification number: H02M3/24 , H02J7/0068
Abstract: A power conversion apparatus (1) is used so as to be connected to three voltage units. The power conversion apparatus includes three power-conversion circuit units and a transformer (4). The three power-conversion circuit units are respectively connected to voltage units that differ from one another. Three coils (5) of the transformer (4) are connected to power-conversion circuit units that differ from one another. The three coils (5) are magnetically coupled with one another. The three coils (5) are arranged so as to be arrayed in a coil axial direction (z). One of the voltage units is a high-voltage battery. Among the coils other than a high-voltage battery-side coil (51) that is connected to the high-voltage battery, the coil (5) of which a power value that flows thereto is largest is arranged in a position that is adjacent to the high-voltage battery-side coil (51).
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公开(公告)号：US11316434B2
公开(公告)日：2022-04-26
申请号：US16594123
申请日：2019-10-07
Applicant: DENSO CORPORATION
Inventor： Yoshiki Suzuki , Shuji Kurauchi , Yuichi Handa , Seiji Iyasu , Yuji Hayashi
Abstract: An electric power conversion apparatus includes a main DC-to-DC converter and an electric power conversion unit. The main DC-to-DC converter is configured to perform voltage conversion between a first-voltage section that operates at a first voltage and a second-voltage section that operates at a second voltage. The electric power conversion unit is connected with the first-voltage section and includes an electric power conversion section and an auxiliary DC-to-DC converter. The electric power conversion section is configured to perform electric power conversion between the first-voltage section and a third-voltage section that operates at a third voltage. The auxiliary DC-to-DC converter is connected in parallel with the main DC-to-DC converter. The auxiliary DC-to-DC converter shares a common configuration section with the electric power conversion section. The common configuration section is constituted of at least part of the electric power conversion section.
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公开(公告)号：US11245326B2
公开(公告)日：2022-02-08
申请号：US17073830
申请日：2020-10-19
Applicant: DENSO CORPORATION
Inventor： Seiji Iyasu , Yuji Hayashi , Yuichi Handa
Abstract: The control apparatus is used with the electrical power converter working to an inputted one of ac voltage and a terminal-to-terminal voltage at a capacitor into the other. The control apparatus calculates a sine-wave command value for a reactor current based on the ac voltage and an amplitude command value indicating an amplitude of the reactor current. The control apparatus also operates switches SW in peak-current mode control to bring the reactor current into agreement with a command value for the reactor current to which a current correction value is added. The control apparatus sets the current correction value to include a component of fluctuation in the terminal-to-terminal voltage at the capacitor based on the ac voltage Vac.
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公开(公告)号：US10686374B2
公开(公告)日：2020-06-16
申请号：US16191986
申请日：2018-11-15
Applicant: SOKEN, INC. , DENSO CORPORATION
Inventor： Kenji Tomita , Seiji Iyasu , Yuichi Handa
Abstract: A control apparatus performs peak current mode control in which a drive switch is turned off when output of a comparator is inverted during an on-operation period determined by a basic signal. The comparator inverts the output when a reactor current increases to a command current. The control apparatus determines that a switching frequency of the drive switch is required to be switched when the output of the comparator is detected to have not become inverted during the single switching period while the peak current mode control is being performed. The control apparatus sets the switching frequency to a first frequency when the switching determining unit determines that the switching frequency is not required to be switched, and switches the switching frequency from the first frequency to a second frequency lower than the first frequency when the switching determining unit determines that the switching frequency is required to be switched.
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