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公开(公告)号：US20240145152A1
公开(公告)日：2024-05-02
申请号：US18383139
申请日：2023-10-24
发明人： Shun ITO , Kazuhiro SHIRAISHI , Yoshiki NAGATA , Takashi KAWASHIMA , HIROSHI FUKASAKU , Shunsuke AMBO
CPC分类号： H01F17/062 , H01F27/292 , H02M1/123
摘要： A motor-driven compressor includes an inverter device. The inverter device includes a common mode choke coil. The common mode choke coil includes an annular core, two windings wound around the core, and an annular conductor that covers the two windings. The conductor is divided into a first metal plate and a second metal plate, which are combined to form an annular shape such that induced current flows in a circumferential direction of the conductor so as to hinder changes in leakage magnetic flux from the core. The second metal plate is thermally connected to the housing. The first metal plate is thermally connected to the second metal plate. At least one of an electrical resistance value or a thermal resistance value in a current path of the induced current is lower in the second metal plate than in the first metal plate.
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公开(公告)号：US20210301803A1
公开(公告)日：2021-09-30
申请号：US17209958
申请日：2021-03-23
发明人： Shunsuke AMBO , Yoshiki NAGATA , Takashi KAWASHIMA , Hiroshi FUKASAKU , Kaida JUNYA , Takeshi HARASAWA , Kenji HAYAKAWA , Takuya SAGAWA , Fumihiro KAGAWA , Mikio YOSHIDA , Kouki YAMAMOTO
摘要： A vehicle electric compressor includes a compression part, an electric motor, and an inverter device. The inverter device includes a noise reduction unit that includes a common mode choke coil. The common mode choke coil includes a core, a first winding wire, a second winding wire, and an electrical conductor that covers the core. The electrical conductor has a first insulation layer and a second insulation layer. The first insulation layer, the electrical conductor, and the second insulation layer form a laminated body including a loop-shaped portion that covers the core and a joint portion.
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公开(公告)号：US20180194200A1
公开(公告)日：2018-07-12
申请号：US15866074
申请日：2018-01-09
发明人： Shunsuke AMBO , Fumihiro KAGAWA , Yoshiki NAGATA
CPC分类号： B60H1/3223 , B60H1/3229 , F04B35/04 , F04B39/121 , F04B2203/0204
摘要： An on-board fluid machine includes a housing configured to allow fluid to flow into the housing, an electric motor accommodated in the housing, and a driver that is supplied with DC power and drives the electric motor. The driver includes a low-pass filter circuit and an inverter circuit. The low-pass filter circuit includes a common mode choke coil and a capacitor. The driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current.
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公开(公告)号：US20170012506A1
公开(公告)日：2017-01-12
申请号：US15194726
申请日：2016-06-28
发明人： Atsushi NAITO , Yoshiki NAGATA , Fumihiro KAGAWA , Shunsuke AMBO
CPC分类号： H02K11/02 , H02K11/33 , H02M1/14 , H02M3/155 , H02M7/5387
摘要： A vehicle inverter device is configured to convert DC power to AC power. The vehicle inverter device includes a circuit having switching elements and a noise reducer. The noise reducer is provided on an input side of the circuit and is configured to reduce common mode noise and normal mode noise contained in the DC power. The noise reducer is configured by a common mode choke coil, which includes a core, a first winding wound about a first winding portion of the core, and a second winding wound about a second winding portion of the core.
摘要翻译： 车辆逆变器装置被配置为将DC电力转换成AC电力。 车辆逆变器装置包括具有开关元件和降噪器的电路。 减噪器设置在电路的输入侧，并且被配置为降低包含在DC电力中的共模噪声和正常模式噪声。 降噪器由共模扼流线圈构成，该共模扼流线圈包括芯，围绕芯的第一绕组部分缠绕的第一绕组和缠绕在芯的第二绕组部分上的第二绕组。
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公开(公告)号：US20150211533A1
公开(公告)日：2015-07-30
申请号：US14605573
申请日：2015-01-26
发明人： Yoshiki NAGATA
CPC分类号： F04D25/06 , F04C18/0207 , F04C23/008 , F04C28/06 , F04C2240/403 , F04C2270/06 , H02P21/18 , H02P23/20
摘要： An electric compressor capable of appropriately starting a motor depending on a condition of a compressing unit is provided. The electric compressor includes: an AC motor including a rotor having a permanent magnet and a stator where a multi-phase coil is wound, and driving a scroll compressor; and an inverter apparatus controlling the AC motor. The inverter apparatus includes: a switching circuit supplying the AC motor with current; and a motor control unit controlling the switching circuit. The motor control unit: measures an elapsed time from a stop to a start of the AC motor for controlling the switching circuit depending on a load on the scroll compressor; calculates a target acceleration of the rotor followed when starting the AC motor, based on the measured elapsed time; and controls the switching circuit so that the rotor is started with the target acceleration.
摘要翻译： 提供能够根据压缩单元的状况适当地起动电动机的电动压缩机。 电动压缩机包括：交流电动机，其包括具有永磁体的转子和卷绕有多相线圈的定子，并驱动涡旋压缩机; 以及控制交流电动机的逆变器装置。 逆变器装置包括：向交流电动机提供电流的开关电路; 以及控制开关电路的电动机控制单元。 电动机控制单元：根据涡旋式压缩机的负载，测量从停止到起动的交流电动机的经过时间，以控制开关电路; 基于测量的经过时间，计算当起动交流电动机时转子的目标加速度; 并控制切换电路，使得转子以目标加速度起动。
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公开(公告)号：US20210249984A1
公开(公告)日：2021-08-12
申请号：US17168688
申请日：2021-02-05
发明人： Takashi KAWASHIMA , Takashi OGAMI , Yoshiki NAGATA
摘要： An inverter controller is configured to control an inverter circuit that drives an on-vehicle electric motor by using an on-vehicle electricity storage device. The inverter controller includes a two-phase voltage command value deriving unit that derives two-phase voltage command values on the basis of an external command value delivered from an external device and an acquisition result of a speed acquiring unit, and a three-phase voltage command value deriving unit that derives three-phase voltage command values on the basis of the two-phase voltage command values. The three-phase voltage command value deriving unit derives the three-phase voltage command values on the basis of a voltage utilization factor, which is calculated on the basis of the two-phase voltage command values and the acquisition result.
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公开(公告)号：US20190089243A1
公开(公告)日：2019-03-21
申请号：US16088326
申请日：2017-03-30
发明人： Atsushi NAITO , Fumihiro KAGAWA , Yoshiki NAGATA , Shunsuke AMBO , Keiji YASHIRO , Kazuhiro SHIRAISHI
摘要： This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common- mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.
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公开(公告)号：US20170274735A1
公开(公告)日：2017-09-28
申请号：US15468359
申请日：2017-03-24
发明人： Takao KAWASAKI , Yoshiki NAGATA , Fumihiro KAGAWA , Shunsuke AMBO , Koki SUZUKI
摘要： An in-vehicle inverter device includes a noise reduction circuit, which has a common mode choke coil configured to reduce common mode noise and normal mode noise contained in DC power, and an inverter circuit, which receives the DC power in which the noise has been reduced. The noise reduction circuit includes: an input-side capacitor and an input-side resistor provided on the input side of the choke coil; an output-side capacitor and an output-side resistor provided on the output side of the choke coil; a first filter circuit that includes the choke coil, the input-side capacitor, and the input-side resistor; and a second filter circuit that includes the choke coil, the output-side capacitor, and the output-side resistor. The first and the second filter circuits reduce leakage noise generated in the inverter circuit.
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公开(公告)号：US20160245269A1
公开(公告)日：2016-08-25
申请号：US15045837
申请日：2016-02-17
发明人： Yoshiki NAGATA , Junya YANO , Takashi KAWASHIMA , Tatsuya KOIDE
IPC分类号： F04B35/04
摘要： A motor-driven compressor includes a compression portion, which compresses a fluid, an electric motor, which drives the compression portion, a drive circuit, which drives the electric motor, a temperature obtaining section, which obtains the temperature of the drive circuit, and a drive mode controller, which controls the drive mode of the drive circuit. The drive mode controller controls the drive mode based on the temperature obtained by the temperature obtaining section and at least one of the rotational speed and the modulation factor of the electric motor.
摘要翻译： 电动压缩机包括压缩流体的压缩部分，驱动压缩部分的电动机，驱动电动机的驱动电路，获得驱动电路的温度的温度获取部分，以及 驱动模式控制器，其控制驱动电路的驱动模式。 驱动模式控制器基于由温度获取部获得的温度和电动机的转速和调制率中的至少一个来控制驱动模式。
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公开(公告)号：US20150207438A1
公开(公告)日：2015-07-23
申请号：US14601683
申请日：2015-01-21
发明人： Tomohiro TAKAMI , Yoshiki NAGATA
摘要： Provided is an inverter apparatus capable of preventing occurrence of overcurrent in an AC motor and stably controlling driving of the AC motor. The inverter apparatus controlling the AC motor included in an electric compressor includes a shunt resistor for detecting current flowing in the AC motor, and a limit value control unit controlling a current limit value for a detected current detected at the shunt resistor. The limit value control unit determines whether the number of times the detected current becomes equal to or more than the first threshold within a first predetermined time is equal to or more than a first number of times. The limit value control unit decreases the current limit value when the number of times the detected current becomes equal to or more than the first threshold within the first predetermined time is equal to or more than the first number of times.
摘要翻译： 提供一种逆变器装置，能够防止交流电动机中发生过电流，稳定地控制交流电动机的驱动。 控制包括在电动压缩机中的AC电动机的逆变器装置包括用于检测在AC电动机中流动的电流的分流电阻器和控制在分流电阻器处检测到的检测电流的电流限制值的限制值控制单元。 限制值控制单元确定在第一预定时间内检测到的电流等于或大于第一阈值的次数等于或大于第一次。 当在第一预定时间内检测电流变得等于或大于第一阈值的次数等于或大于第一次数时，限制值控制单元减小电流限制值。
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