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公开(公告)号：US20220069760A1
公开(公告)日：2022-03-03
申请号：US17342795
申请日：2021-06-09
发明人： Hitoshi ISODA , Shinsuke KAYANO , Kengo KUMAGAI , Noriyuki WADA
摘要： To provide a controller for rotary electric machine which can estimate a transitional temperature with good accuracy, while considering the heating amount and the heat radiation amount due to copper loss and iron loss which change according to the operating point of rotational speed and torque, and suppressing the increase in arithmetic load. A controller for rotary electric machine, at calculation timing of every estimation calculation period, by referring to a temperature prediction data in which a relationship among a rotational speed, a torque information, a temperature at a reference time point, and a temperature after lapse of the estimation calculation period from the reference time point, calculates an estimation value of temperature after lapse of the estimation calculation period from the last time calculation timing, corresponding to the present rotational speed, the present torque information, and the estimation value of temperature calculated at the last time calculation timing.
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公开(公告)号：US20210376778A1
公开(公告)日：2021-12-02
申请号：US17198488
申请日：2021-03-11
发明人： Kengo KUMAGAI , Shinsuke KAYANO , Hitoshi ISODA
摘要： To provide a controller for AC rotary electric machine which can reduce an electromagnetic exciting force in the execution region of the magnetic flux weakening control. A controller for AC rotary electric machine, in a specific operating region which is set in an operating region of the magnetic flux weakening control, increases a maximum value of amplitude of fundamental wave components of applied voltages applied to windings more than a normal operating region other than the specific operating region; and calculates dq-axis current command values by the magnetic flux weakening control, in a condition in which the maximum value of amplitude of the fundamental wave components of the applied voltages is increased.
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公开(公告)号：US20150162790A1
公开(公告)日：2015-06-11
申请号：US14258169
申请日：2014-04-22
CPC分类号： H02K1/2766 , H02K2201/06 , H02K2213/03
摘要： A rotating electric machine includes a rotor including: a rotor core divided into blocks in an axial direction, the blocks being arranged to have a phase angle therebetween in a circumferential direction, the rotor core having magnet through holes arrayed in the circumferential direction and formed in an outer circumferential region; and permanent magnets inserted into the magnet through holes. The magnet through hole includes: a magnet insertion portion into which the permanent magnet is inserted; and a non-magnetic portion provided on an outer side of the magnet insertion portion in the circumferential direction. A bridge portion is formed between the outer circumferential surface and an outer circumferential inner wall of the non-magnetic portion. A bridge angle, which is an angle between both circumferential ends of the bridge portion with a rotation center of the rotor core set as a vertex, is larger than a skew angle.
摘要翻译： 旋转电机包括转子，该转子包括：沿轴向分为块体的转子铁芯，所述块体在圆周方向上具有相位角，所述转子铁芯具有沿圆周方向排列的磁体通孔，并形成在 外周区域; 永久磁铁插入到磁铁通孔中。 磁体通孔包括：永磁体插入其中的磁体插入部分; 以及设置在磁体插入部的周向的外侧的非磁性部。 在非磁性部的外周面与外周内壁之间形成有桥部。 作为设置为顶点的转子铁芯的旋转中心的桥接部的两个周向端部之间的角度的桥角大于倾斜角度。
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公开(公告)号：US20130320786A1
公开(公告)日：2013-12-05
申请号：US13668498
申请日：2012-11-05
发明人： Hitoshi ISODA , Yoshinobu UTSUMI , Masahiko FUJITA
IPC分类号： H02K9/06
CPC分类号： H02K9/06 , H02K5/20 , H02K9/02 , H02K9/04 , H02K9/28 , H02K11/046 , H02K11/215 , H02K11/30 , H02K11/33
摘要： A first cooling air passage is formed to let first cooling air generated by a cooling fan in from a radially outside of an inverter apparatus to cool a heat sink and out through exhaust holes provided on an outer peripheral side of a rear bracket by passing an inner periphery of the rear bracket. Also, a second cooling air passage is formed to let second cooling air generated by the cooling fan into a hollow portion of the inverter apparatus from an axially rear of a rotation shaft to cool a brush holder and a magnetic pole position detection sensor and out through the exhaust holes by passing the inner periphery of the rear bracket. Hence, cooling performance for the magnetic pole position detection sensor and the brush holder may be enhanced and an axial dimension may be reduced.
摘要翻译： 第一冷却空气通道形成为使得从逆变器装置的径向外侧产生的冷却风扇产生的第一冷却空气通过设置在后支架的外周侧上的排气孔通过内侧 后支架周边。 此外，第二冷却空气通道形成为使得由冷却风扇产生的第二冷却空气从旋转轴的轴向后方转换成逆变器装置的中空部分，以冷却电刷架和磁极位置检测传感器，并通过 排气孔通过后支架的内周。 因此，可以增强磁极位置检测传感器和电刷架的冷却性能，并且可以减小轴向尺寸。
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公开(公告)号：US20220320924A1
公开(公告)日：2022-10-06
申请号：US17572008
申请日：2022-01-10
发明人： Shinsuke KAYANO , Tatsuo NISHIMURA , Junji KITAO , Hitoshi ISODA
摘要： In a rotor in which magnet slots arranged in a V shape so as to open toward the outer circumferential side and having permanent magnets inserted therein are formed in a two-layer structure in a radial direction, the magnet slots in each layer are composed of a pair of slots formed between a center bridge located at the center and respective ones of two radially-outer bridges located between the outer surface of the rotor and the respective slots. Of magnetic fluxes generated from the permanent magnets, magnetic fluxes excluding magnetic fluxes for magnetically saturating the bridges are defined as effective magnetic fluxes. The rotor is configured such that the effective magnetic flux generated from the permanent magnet on the radially outer side is not greater than half the effective magnetic flux generated from the permanent magnet on the radially inner side.
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公开(公告)号：US20190250011A1
公开(公告)日：2019-08-15
申请号：US16342045
申请日：2016-10-31
发明人： Hitoshi ISODA , Yoshihiro MIYAMA , Tatsuo NISHIMURA , Hideaki ARITA , Shinji NISHIMURA , Koji NISHIZAWA
CPC分类号： G01D5/145 , G01D5/2448 , G01D5/245
摘要： A rotation angle detection device including: a rotor; a stator including “b” (b≥3) magnetic detection portions (MDPs) each including a bias magnetic field generation portion and a magnetic detection element (MDE); and a rotation angle processor calculating a rotation angle of the rotor based on a detection by the (MDEs). The rotor has convex and concave portions (CCPs), which change in “x” cycles for a mechanical angle 360 (“x”≥1) to make the MDEs possible to obtain a sine wave. There are arranged “b” MDPs along a circumferential direction of the stator for each cycle of the CCPs, which are arranged at intervals of a mechanical angle 360×(n×b+m)/(x×b), where “n” (n≥0) represents, by a number of cycles, a deviation amount of each of the MDPs from a reference position in the circumferential direction, and “m” (1≤m≤“b”) represents a position of a MDP in an arrangement order.
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公开(公告)号：US20190036387A1
公开(公告)日：2019-01-31
申请号：US16072005
申请日：2016-11-29
发明人： Moriyuki HAZEYAMA , Junji KITAO , Yoshihiro MIYAMA , Shogo OKAMOTO , Shinji NISHIMURA , Ryuichi KITORA , Ryuji KITAMURA , Hitoshi ISODA
摘要： In a rotary electric machine, slots are formed between teeth of a stator core. A ratio of a number of poles to a number of slots is 2:3. When an electrical angle of a tooth tip width, which is a width dimension of a tip of each of the teeth in a circumferential direction of the stator, is represented by α, an electrical angle of a pole arc angle, which is an angle formed by two straight lines that connect a rotation center of a rotor to corners on a rotor surface side of one permanent magnet, is represented by β, and a number of pole pairs is represented by P, the tooth tip width is within a range of (electrical angle)±0.2°×P for a value that satisfies the following expression: β=−2.5α+319.7 (0
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