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公开(公告)号：US20140009971A1
公开(公告)日：2014-01-09
申请号：US13936710
申请日：2013-07-08
Applicant: NIPPON SOKEN, INC. , DENSO CORPORATION
Inventor： Hideki ITOU , Yuuichi HANDA , Yuji HAYASHI
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/44 , H02M3/33569
Abstract: An electric power converter has a switching circuit section, a transformer, a rectifier, and a noise filtering element. The rectifier is connected to a secondary coil of the transformer. A closed circuit where the noise current flows is formed by the secondary coil, the rectifier, and the noise filtering element. The transformer and the noise filtering element are disposed in a position next to each other. The secondary coil and the noise filtering element are electrically connected to each other through a terminal for a coil that is a terminal of the secondary coil and a terminal for a filter that is a terminal of the noise filtering element. The terminal for the coil and the terminal for the filter are disposed in a position between the transformer and the noise filtering element.
Abstract translation: 电力转换器具有开关电路部分，变压器，整流器和噪声滤波元件。 整流器连接到变压器的次级线圈。 噪声电流流过的闭路由次级线圈，整流器和噪声滤波元件形成。 变压器和噪声滤波元件设置在彼此相邻的位置。 次级线圈和噪声滤波元件通过作为次级线圈的端子的线圈的端子和作为噪声滤波元件的端子的滤波器的端子彼此电连接。 用于线圈的端子和用于滤波器的端子设置在变压器和噪声滤波元件之间的位置。
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公开(公告)号：US20130336014A1
公开(公告)日：2013-12-19
申请号：US13845963
申请日：2013-03-18
Applicant: DENSO CORPORATION
Inventor： Hirofumi KINJOU , Keiji SHIGEOKA , Yuji HAYASHI , Kenji TOMITA , Kimikazu NAKAMURA
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/3376 , H02M7/53871
Abstract: A DC-DC converter generates PWM signals PWM1H, PWM1L on the basis of a reference signal CLK1 to drive switching elements connected in series. When generating a reset signal RST, the converter generates PWM signals PWM2H, PWM2L on the basis of the reset signal RST. When generating no reset signal, the converter generates the PWM signals PWM2H, PWM2L on the basis of a reference signal CLK2 in order to drive other switching elements connected in series. The converter generates the reset signal RST at an optional timing to the reference signal CLK1. The reference signal CLK2 is brought forward from the reference signal CLK1 by ΔT1. The PWM signals PWM1H, PWM1L are different in timing from the PWM signals PWM2H, PWM2L. This makes it possible to avoid the switching elements diagonally arranged from being simultaneously turned on and off, and suppress a switching loss, and to increase an efficiency of the converter.
Abstract translation: DC-DC转换器基于参考信号CLK1产生PWM信号PWM1H，PWM1L，以驱动串联连接的开关元件。 当产生复位信号RST时，转换器基于复位信号RST产生PWM信号PWM2H，PWM2L。 当不产生复位信号时，转换器基于参考信号CLK2产生PWM信号PWM2H，PWM2L，以驱动串联连接的其它开关元件。 转换器在参考信号CLK1的可选定时产生复位信号RST。 参考信号CLK2从参考信号CLK1提前DeltaT1。 PWM1H，PWM1L的PWM信号与PWM2H，PWM2L的PWM信号的时序不同。 这使得可以避免对角线布置的同时导通和截止的开关元件，并且抑制开关损耗，并且提高转换器的效率。
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公开(公告)号：US20130300397A1
公开(公告)日：2013-11-14
申请号：US13743745
申请日：2013-01-17
Applicant: DENSO CORPORATION
Inventor： Hirofumi KINJO , Keiji SHIGEOKA , Yuji HAYASHI , Kimikazu NAKAMURA
CPC classification number: H02M3/24 , B60R16/03 , H02M3/33507 , H02M3/3376
Abstract: In a power converter, a reference signal generator generates a reference signal with a predetermined period. A current detector detects a current flowing in the converter. When a value of the detected current is larger than a value of a predetermined current command, a reset signal generator generates a reset signal. A driving unit drives a switch. The switch is turned on, and subsequently is turned off: (i) in synchronization with the reference signal when the reset signal is not outputted before the reference signal is outputted; and (ii) in synchronization with the reset signal when the reset signal is outputted before the reference signal is outputted. However, the switch is turned off in synchronization with the reset signal during a predetermined time including a first predetermined time before an output timing of the reference signal and a second predetermined time after the output timing of the reference signal.
Abstract translation: 在功率转换器中，参考信号发生器产生具有预定周期的参考信号。 电流检测器检测在转换器中流动的电流。 当检测电流的值大于预定电流指令的值时，复位信号发生器产生复位信号。 驱动单元驱动开关。 开关导通，随后断开：（i）在参考信号输出之前不输出复位信号时与参考信号同步; 以及（ii）当在输出参考信号之前输出复位信号时与复位信号同步。 然而，在包括参考信号的输出定时之前的第一预定时间和参考信号的输出定时之后的第二预定时间的预定时间期间，开关与复位信号同步地被关闭。
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公开(公告)号：US20240388157A1
公开(公告)日：2024-11-21
申请号：US18785292
申请日：2024-07-26
Applicant: DENSO CORPORATION
Inventor： Toshio YAMAMOTO , Yuji HAYASHI
Abstract: A coil assembly includes a plurality of strip members which are rolled or wound in a circumferential direction of the coil assembly. The strip members have at least portions overlapping each other in a radial direction of the coil assembly and stacked on one another in the radial direction of the coil assembly. The strip members have a plurality of coils disposed thereon. The coil assembly also has a thin-walled portion and thick-walled portions. The thin-walled portion is defined by a portion of the strip members and has a first thickness in the radial direction. The thick-walled portions are defined by portions of the strip members and have a second thickness in the radial direction which is greater than the first thickness. The thick-walled portions are arranged away from each other in the circumferential direction.
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公开(公告)号：US20240305154A1
公开(公告)日：2024-09-12
申请号：US18666400
申请日：2024-05-16
Applicant: DENSO CORPORATION
Inventor： Toshio YAMAMOTO , Yuji HAYASHI
Abstract: A stator includes a stator core, a coil assembly and a coil assembly support member. The coil assembly has a band member rolled along a circumferential direction into an annular shape, a coil formed on the band member, and a coil-assembly-side recess formed in the band member. The coil assembly support member is provided between the stator core and the coil assembly and mounted to the stator core. The coil assembly support member has a support-member-side protrusion. The coil assembly is positioned with respect to the stator core through engagement between the support-member-side protrusion and the coil-assembly-side recess.
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Patent Agency Ranking
公开(公告)号：US20240235311A1
公开(公告)日：2024-07-11
申请号：US18616546
申请日：2024-03-26
Applicant: DENSO CORPORATION
Inventor： Yuji HAYASHI , Toshio YAMAMOTO , Yusuke TATEISHI
CPC classification number: H02K3/47 , H02K1/278 , H02K21/14 , H02K2203/12
Abstract: A stator includes an armature core having an annular shape, coils, and an insulator. The coils are arranged along the armature core. Each of the coils is a wound conductive winding. Each of the coils includes a pair of facing portions disposed to be aligned in a circumferential direction with a predetermined interval therebetween. The first and second facing portions of each of the coils constitute intermediate portions of the corresponding one of the coils. Each of the coils includes a pair of first and second coil end portions that link the facing portions to each other. The insulator is arranged between the stator core and the coils. The insulator includes a base comprised of an insulating material, and one or more soft-magnetic members each being comprised of a soft-magnetic material, the one or more soft-magnetic members being contained in the base.
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公开(公告)号：US20220209675A1
公开(公告)日：2022-06-30
申请号：US17697487
申请日：2022-03-17
Applicant: DENSO CORPORATION
Inventor： Shuji KURAUCHI , Yuichi HANDA , Seiji IYASU , Yuji HAYASHI
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：US20220190732A1
公开(公告)日：2022-06-16
申请号：US17685957
申请日：2022-03-03
Applicant: DENSO CORPORATION
Inventor： Shuji KURAUCHI , Yuichi HANDA , Seiji IYASU , Yuji HAYASHI
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：US20210036599A1
公开(公告)日：2021-02-04
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：US20210028717A1
公开(公告)日：2021-01-28
申请号：US17066973
申请日：2020-10-09
Applicant: DENSO CORPORATION
Inventor： Seiji IYASU , Yuji HAYASHI , Yuichi HANDA
Abstract: In a control apparatus for a power converter, a current obtainer obtains a current flowing through an inductor as an inductor current, and an alternating-current voltage obtainer obtains an alternating-current voltage. A drive signal outputting unit generates, based on the alternating-current voltage obtained by the voltage obtainer, a sinusoidal command. The drive signal outputting unit performs peak-current mode control to output a drive signal that controls switching of the drive switch to thereby cause the inductor current to follow the sinusoidal command. A delay unit delays, for one switching cycle of the drive switch, an off-switching timing of the drive switch in accordance with the alternating-current voltage. The drive signal defines the off-switching timing of the switch.
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