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公开(公告)号：US20170264232A1
公开(公告)日：2017-09-14
申请号：US15218600
申请日：2016-07-25
IPC分类号： H02P29/032 , H02P27/08
CPC分类号： H02P29/032 , H02P5/74 , H02P27/08
摘要： There is provided a controller for a rotary electric machine drive apparatus capable of reducing data-processing load and amount of memories required for a data processing which calculates a voltage command value of the converter which reduces power loss. A controller calculates the required minimum voltage which is required in the case of performing a maximum torque/current control is calculated; calculates a converter loss coefficient which is a coefficient of a polynomial representing a power loss characteristic of the converter; calculates an inverter loss coefficient which is a coefficient of a polynomial representing a power loss characteristic of the inverter; calculates a sum total of loss coefficients for each order of polynomials; calculates the low loss voltage which the sum total power loss becomes a minimum, based on the sum total loss coefficients for each order; sets to the voltage command value of the converter.
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公开(公告)号：US20210391814A1
公开(公告)日：2021-12-16
申请号：US17284996
申请日：2018-12-06
摘要： Provided is a control device for a rotating machine including a magnetic pole position estimation unit, a vector calculation unit, a current command correction unit configured to correct a first d-axis current command and a first q-axis current command, to thereby output a second d-axis current command and a second q-axis current command, a voltage application unit configured to superimpose a high-frequency voltage including a specific frequency component on voltage commands on rotational coordinates. The magnetic pole position estimation unit is configured to estimate the position of the magnetic pole based on a state quantity of the specific frequency component. The current command correction unit is configured to correct the current commands so that a current amplitude of electrical angle frequency components is equal to or larger than a half of a current amplitude of the specific frequency component.
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公开(公告)号：US20170288588A1
公开(公告)日：2017-10-05
申请号：US15259501
申请日：2016-09-08
摘要： An object is to ensure torque accuracy by suppressing the occurrence of low-frequency fold-back noise caused by aliasing, and stable control performance with respect to environmental variations, such as angular errors, power voltage ripples, and so on.A motor control device includes a current detector (10) which, in generating a feedback current value on the basis of the detection result of a three-phase AC current supplied from an inverter (2) to a motor (1), generates a first current detection value based on a first sample timing and a second current detection value based on a second sample timing that is shorter than the first sample timing; a coordinates converter (11) which converts the coordinates of the first current detection value and the second current detection value to q and d axes; and a detection current processor (13) which generates a feedback current value from the coordinate conversion results.
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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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