-
公开(公告)号：US10075059B2
公开(公告)日：2018-09-11
申请号：US15816555
申请日：2017-11-17
Applicant: DENSO CORPORATION
Inventor： Seiji Iyasu , Yuji Hayashi , Kimikazu Nakamura , Yuichi Handa
CPC classification number: H02M1/088 , G01R19/22 , G01R31/42 , H02M3/33592 , H02M2001/0009 , Y02B70/1475
Abstract: A current detection apparatus is provided which detects a current flowing through a detection part in an electrical circuit. The current detection apparatus includes a first coil connected in series with the detection part, a second coil magnetically coupled with the first coil, a full-wave rectifier circuit connected to both ends of the second coil, a switching element having a first end connected to a positive electrode side output part of the full-wave rectifier circuit and a second end connected to a first resistor, and a second resistor that forms a closed circuit with the second coil regardless of an open or closed state of the switching element.
-
22.发明授权公开(公告)号：US09621046B2
公开(公告)日：2017-04-11
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.
-
公开(公告)号：US09444246B2
公开(公告)日：2016-09-13
申请号：US14287507
申请日：2014-05-27
Applicant: DENSO CORPORATION , NIPPON SOKEN, INC.
Inventor： Kimikazu Nakamura , Yuji Hayashi
IPC: H02H3/20 , H02H7/12 , H02M1/32 , H02M3/155 , H02M3/335 , H02M7/5387 , H02H3/44 , G05F1/573 , H02H9/02
CPC classification number: H02H7/1213 , G05F1/573 , H02H3/44 , H02H9/02 , H02M1/32 , H02M3/155 , H02M3/335 , H02M7/5387
Abstract: In a power converter, a driver that drives, according to a control signal, a switching element of a switch circuit for converting input power to output power. The control signal represents how to drive the switching element. A controller outputs the control signal to the driver for controlling the driver. A measuring unit measures a value of input power input to the switch circuit. A protection determining unit determines, based on the measured value of the input power, whether there is a need to protect the power converter. The protection determining unit outputs a stop control signal to at least one of the driver and the controller based on a result of the determination of whether there is a need to protect the power converter. The stop control signal represents whether to forcibly stop drive of the switching element.
Abstract translation: 在功率转换器中，驱动器根据控制信号驱动用于将输入功率转换为输出功率的开关电路的开关元件。 控制信号表示如何驱动开关元件。 控制器将控制信号输出到驾驶员以控制驾驶员。 测量单元测量输入到开关电路的输入电源的值。 保护确定单元基于输入功率的测量值确定是否需要保护功率转换器。 保护确定单元基于确定是否需要保护功率转换器的结果向至少一个驱动器和控制器输出停止控制信号。 停止控制信号表示是否强制停止开关元件的驱动。
-
公开(公告)号：US09160237B2
公开(公告)日：2015-10-13
申请号：US13936710
申请日：2013-07-08
Applicant: DENSO CORPORATION , NIPPON SOKEN, INC.
Inventor： Hideki Itou , Yuuichi Handa , Yuji Hayashi
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。
-
公开(公告)号：US09071149B2
公开(公告)日：2015-06-30
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 , H02M3/337 , H02M7/5387
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＆Dgr; T1。 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。
-
Patent Agency Ranking
公开(公告)号：US20140198538A1
公开(公告)日：2014-07-17
申请号：US14156851
申请日：2014-01-16
Applicant: NIPPON SOKEN, INC. , DENSO CORPORATION
Inventor： Norihito KIMURA , Hideki Itou , Yuji Hayashi
IPC: H02M3/335
CPC classification number: H02M3/3376 , H02M3/33507
Abstract: In a power converter, a driver drives a switching element using a manipulated variable therefor to convert input power into output power. A first measuring unit measures a value of a first electric parameter depending on the input power. A first determiner determines, from the measured value of the first electric parameter, a first feedback controlled variable. A second measuring unit measures a value of a second electric parameter indicative of the output power, and a calculator calculates, based on the measured value of the second electric parameter and a command value for the second electric parameter, a second feedback controlled variable. A selector selects, based on the measured value of the first electric parameter, one of the first feedback controlled variable and the second feedback controlled variable. A second determiner determines the manipulated variable using the selected one of the first and second feedback controlled variables.
Abstract translation: 在功率转换器中，驱动器使用操纵变量来驱动开关元件，以将输入功率转换为输出功率。 第一测量单元根据输入功率来测量第一电参数的值。 第一确定器根据第一电参数的测量值确定第一反馈控制变量。 第二测量单元测量表示输出功率的第二电参数的值，并且计算器基于第二电参数的测量值和第二电参数的命令值计算第二反馈控制变量。 选择器基于第一电参数的测量值选择第一反馈控制变量和第二反馈控制变量之一。 第二确定器使用所选择的第一和第二反馈控制变量中的一个确定操纵变量。
-
公开(公告)号：US20240339879A1
公开(公告)日：2024-10-10
申请号：US18748532
申请日：2024-06-20
Applicant: Denso Corporation
Inventor： Toshio YAMAMOTO , Yuji Hayashi
IPC: H02K3/04
CPC classification number: H02K3/04
Abstract: A coil assembly includes: a band member formed of an electrically-insulative material into a band shape and rolled along a circumferential direction; and a plurality of coils formed of an electroconductive material on the band member and arranged in alignment with each other along the circumferential direction. The plurality of coils have a plurality of paths through which electric current flows and which constitute parts of a closed circuit. The coil assembly also includes first and second connection portions. The first connection portion constitutes a part of the closed circuit and connects between the plurality of paths. The second connection portion constitutes another part of the closed circuit and connects between the plurality of paths so that induced currents, which are induced in the closed circuit by electromagnetic induction due to movement of magnets in the circumferential direction, are canceled out by each other in the closed circuit.
-
公开(公告)号：US12015352B2
公开(公告)日：2024-06-18
申请号：US17697487
申请日：2022-03-17
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.
-
公开(公告)号：US20240120794A1
公开(公告)日：2024-04-11
申请号：US18539674
申请日：2023-12-14
Applicant: DENSO CORPORATION
Inventor： Yusuke TATEISHI , Toshio Yamamoto , Yuji Hayashi
CPC classification number: H02K3/28 , H02K1/278 , H02K3/02 , H02K3/34 , H02K2213/03
Abstract: A motor includes a stator having a stator core. The stator includes a coil connection body of one phase having a plurality of coils connected with each other; at least one of the coils has an electrical resistance set to be different from an electrical resistance of another of the coils. The stator also includes a coil connection body of another phase having a plurality of coils connected with each other; at least one of the coils has an electrical resistance set to be different from an electrical resistance of another of the coils. Moreover, the coil connection body of the another phase has a combined resistance set to be equal to a combined resistance of the coil connection body of the one phase.
-
公开(公告)号：US10763669B2
公开(公告)日：2020-09-01
申请号：US16523100
申请日：2019-07-26
Applicant: DENSO CORPORATION
Inventor： Seiji Iyasu , Yuji Hayashi , Yuichi Handa
Abstract: A control device is applied to a power conversion system including a first DDC and a second DDC connected in parallel with a common power supply target. The control device performs the equalization control of correcting, with an output correction voltage, at least any of a voltage command value of the first DDC and a voltage command value of the second DDC to equalize an output current. Moreover, while the equalization control is being performed, it is determined on which one of an output side of the first DDC or an output side of the second DDC abnormal disconnection has been caused based on the output correction voltage.
-
-
-
-
-
-
-
-
-
Search Results
35
records
(took 0.023 seconds)
