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公开(公告)号：US20210257950A1
公开(公告)日：2021-08-19
申请号：US17233739
申请日：2021-04-19
申请人： DENSO CORPORATION
发明人： Makoto TANIGUCHI , Yuki TAKAHASHI
摘要： A control apparatus of a rotary electric machine includes a rotor; a stator including a multiphase stator winding provided with conductor portions arranged in a circumferential direction thereof. The rotary electric machine is configured of any one of a first configuration having a first inter-conductor member using a magnetic material; a second configuration having a second inter-conductor member using a non-magnetic material; and a third configuration having no inter-conductor member. The control apparatus includes: a drive circuit with switching elements provided for each phase, supplying power to the multiphase stator winding; and a control unit controlling the drive circuit such that a period where a conduction ratio of the switching elements for one phase in the drive circuit is maintained at a constant value is more than or equal to 120 degrees and less than 180 degrees in electrical angle.
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公开(公告)号：US20200373801A1
公开(公告)日：2020-11-26
申请号：US16989641
申请日：2020-08-10
申请人： DENSO CORPORATION
发明人： Hirofumi KINJO , Makoto TANIGUCHI
摘要： A drive apparatus is provided for driving a rotating electric machine having first and second multi-phase coils. The drive apparatus includes first and second inverters, first and second shift switches, and first and second energization controllers. The first energization controller is configured to turn on and off, for each of phase windings of the first and second multi-phase coils, one corresponding pair of upper-arm and lower-arm switches of the first and second inverters while keeping the first and second shift switches in an OFF state. The second energization controller is configured to turn on and off, for each corresponding pair of the phase windings of the first and second multi-phase coils, one corresponding upper-arm switch of the first inverter and one corresponding lower-arm switch of the second inverter respectively for first energization periods and second energization periods that are alternately set while keeping the shift switches in an ON state.
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公开(公告)号：US20200161939A1
公开(公告)日：2020-05-21
申请号：US16748195
申请日：2020-01-21
申请人： DENSO CORPORATION
发明人： Yuki TAKAHASHI , Makoto TANIGUCHI
摘要： A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.
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公开(公告)号：US20170040876A1
公开(公告)日：2017-02-09
申请号：US15297734
申请日：2016-10-19
申请人： DENSO CORPORATION
发明人： Makoto TANIGUCHI
CPC分类号： H02K15/0435 , H02K1/146 , H02K1/2706 , H02K1/278 , H02K3/18 , H02K7/083 , H02K11/215 , H02K11/38 , H02K15/02 , H02K15/026 , H02K15/06 , H02K15/08 , H02K21/16 , H02K29/08 , H02K2213/03 , Y10T29/49009 , Y10T29/49012
摘要： A rotating electrical machine includes a supporting member, a stator core, a winding set, a shaft, a rotor, a magnetic generator, and a magnetic detector. The stator core has a ring-shaped yoke held inside the supporting member and tooth portions projecting from the yoke in a radial inward direction of the yoke. The winding set is wound on the tooth portions. The shaft extends through the stator core and is rotatably supported by the supporting member. The rotor is located in the stator core and rotates with the shaft. The magnetic generator is located at an end of the shaft. The magnetic detector outputs a signal indicative of a change in magnetic flux density created by the magnetic generator. The number of the tooth portions for every magnetic pole pair in the rotor is even.
摘要翻译： 旋转电机包括支撑构件，定子芯，绕组，轴，转子，磁发生器和磁检测器。 定子铁芯具有保持在支撑构件内部的环形轭和从磁轭沿轭的径向向内突出的齿部。 卷绕组缠绕在齿部上。 轴延伸穿过定子铁芯并由支撑构件可旋转地支撑。 转子位于定子铁芯中并与轴一起旋转。 磁力发生器位于轴的一端。 磁检测器输出表示由磁发生器产生的磁通密度变化的信号。 转子中每个磁极对的齿部数量均匀。
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公开(公告)号：US20160272238A1
公开(公告)日：2016-09-22
申请号：US14976753
申请日：2015-12-21
申请人： DENSO CORPORATION
发明人： Makoto TANIGUCHI , Koji ISOGAI
CPC分类号： B62D5/0421 , F16C19/54 , F16C25/083 , F16C2380/27 , H02K5/1732 , H02K7/06 , H02K7/083
摘要： A case is formed of aluminum. A rotation axis has one end affixed with an input rotor element and is rotational with a rotor. A first bearing is equipped to the case and is located between the input rotor element and the rotor to rotationally support the rotation axis. A second bearing is equipped to the case and is located on an opposite side of the rotor from the first bearing to rotationally support the rotation axis. A multilayered helical wave washer is wound for three rounds or more in a spiral wave form and is located in an axial gap formed between the case and an outer ring of one of the first bearing and the second bearing to apply a spring load to the outer ring in the axial direction.
摘要翻译： 铝由铝形成。 旋转轴线的一端固定有输入转子元件并与转子一起旋转。 第一轴承配备有壳体并且位于输入转子元件和转子之间以旋转地支撑旋转轴线。 第二轴承配备有壳体并且位于转子的与第一轴承相反的一侧上以旋转地支撑旋转轴线。 多层螺旋波形垫圈以螺旋波形缠绕三圈以上，并且位于壳体与第一轴承和第二轴承之一的外圈之间的轴向间隙中，以将弹簧载荷施加到外部 在轴向上环。
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公开(公告)号：US20140062245A1
公开(公告)日：2014-03-06
申请号：US13962223
申请日：2013-08-08
申请人： Denso Corporation
发明人： Makoto TANIGUCHI
IPC分类号： H02K1/27
CPC分类号： H02K1/27 , H02K1/2746 , H02K1/278
摘要： A rotor includes a rotation shaft having a rotation axis; a rotator core fixed to the rotation shaft and having an axial end face and an outer circumference face; an end plate covering the axial end face of the rotator core; and a magnet cover covering the outer circumference face of the rotator core. The magnet cover has a first end portion adjacent to the end plate and a second end portion which is opposite to the first end portion in an axial direction. The first end portion of the magnet cover covers entire outer periphery edge of the end plate. The first end portion of the magnet cover is bent toward the rotation axis in entire outer periphery edge of the magnet cover.
摘要翻译： 转子包括具有旋转轴的旋转轴; 固定在所述旋转轴上并具有轴向端面和外周面的旋转体芯; 覆盖所述旋转体芯的轴向端面的端板; 以及覆盖旋转体芯的外周面的磁体盖。 磁体盖具有与端板相邻的第一端部和与轴向方向上的第一端部相对的第二端部。 磁体盖的第一端部覆盖端板的整个外周边缘。 磁体盖的第一端部在磁体盖的整个外周边缘处朝向旋转轴线弯曲。
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公开(公告)号：US20220006358A1
公开(公告)日：2022-01-06
申请号：US17481650
申请日：2021-09-22
申请人： DENSO CORPORATION
发明人： Yuki TAKAHASHI , Makoto TANIGUCHI
摘要： A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.
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公开(公告)号：US20210297006A1
公开(公告)日：2021-09-23
申请号：US17339279
申请日：2021-06-04
申请人： DENSO CORPORATION
摘要： In a power converter for converting DC power from a DC power source into AC power and supplying the AC power to a single-phase winding or multi-phase windings, a controller controls first and second inverter circuits and performs first power conversion control to lock open/closed states of switching elements in the second inverter circuit and switch open/closed states of switching elements in the first inverter circuit, and second power conversion control to lock open/closed states of the switching elements in the first inverter circuit and switch open/closed states of the switching elements in the second inverter circuit. The controller is configured to perform either the first power conversion control or the second power conversion control when an effective value of drive current through each winding is less than a threshold, and otherwise switch between the first power conversion control and the second power conversion control.
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公开(公告)号：US20210211084A1
公开(公告)日：2021-07-08
申请号：US17212655
申请日：2021-03-25
申请人： DENSO CORPORATION
IPC分类号： H02P27/08 , H02M7/5387 , H02M1/08
摘要： A drive device for a rotary electric machine includes a first inverter that has high-potential side and low-potential side switching elements corresponding to phases of the rotary electric machine and is connected to a DC power supply, a second inverter that has high-potential side and low-potential side switching elements corresponding to the phases and is connected to the first inverter via a connection line, and a controller that controls the first and second inverters so that if a percentage modulation expressed by a fundamental wave component amplitude of a phase winding voltage and a CD voltage is a threshold value or more, percentage modulations of output phase voltages of the first and second inverters are more than 1, and so that a phase difference between a phase of the output phase voltage of the first inverter section and that of the second inverter section changes depending on the percentage modulation.
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公开(公告)号：US20200382039A1
公开(公告)日：2020-12-03
申请号：US16997393
申请日：2020-08-19
申请人： DENSO CORPORATION
发明人： Jun ISHIDA , Makoto TANIGUCHI
摘要： A control device for a pole-number switching electric motor applied to a system including an electric motor capable of switching a number of poles, and an inverter electrically connected to stator windings of the electric motor; includes: a basic operation unit configured to operate the inverter to control a current amplitude which is magnitude of a current vector flowing in the stator winding, and a switching operation unit configured to operate the inverter to reduce the current amplitude before switching and increase the current amplitude after switching. The switching operation unit, the pole number switching period, operates the inverter so that a total value of the current amplitude before switching and the current amplitude after switching does not exceed a limiting current value.
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