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公开(公告)号：US09154070B2
公开(公告)日：2015-10-06
申请号：US13774667
申请日：2013-02-22
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
CPC classification number: H02P21/0096 , H02P21/14 , H02P21/22
Abstract: A controller for a three-phase AC motor includes a current sensor and a current estimation section. The current sensor detects current flowing through one phase of the motor. The one phase is defined as a sensor phase. The current estimation section calculates a current phase relative to an axis of the sensor phase based on α-axis current and β-axis current in a stationary coordinate system defined by a α-axis parallel to the sensor phase axis and a β-phase perpendicular to the sensor phase axis. The current estimation section estimates current flowing through another phase of the motor based on the current phase and the detected current. The current estimation section calculates the α-axis current based on the detected current. The current estimation section calculates the β-axis current based on the detected current and a command value for the current flowing through the other phase of the motor.
Abstract translation: 三相AC电动机的控制器包括电流传感器和电流估计部。 电流传感器检测流经电机一相的电流。 一相被定义为传感器相位。 当前估计部分基于平行于传感器相位轴的α轴定义的固定坐标系中的α轴电流和b轴电流，计算出相对于传感器相位的轴的电流相位，并且 - 相位垂直于传感器相位轴。 当前估计部分基于当前相位和检测到的电流来估计流过电动机的另一相的电流。 当前估计部分基于检测到的电流来计算α轴电流。 当前估计部分基于检测到的电流和流过电动机的另一相的电流的指令值来计算电流。
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公开(公告)号：US09106163B2
公开(公告)日：2015-08-11
申请号：US14174213
申请日：2014-02-06
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
Abstract: A control device for controlling a three phase AC motor with an inverter includes: a sensor phase current acquisition device for a sensor phase current sensed value; a rotation angle acquisition device for a rotation angle sensed value; a number-of-revolutions operation device for the revolution number; a current estimation device for a current estimated value; a first voltage command value operation device for a first voltage command value; a voltage command reference value operation device for a voltage command reference value; a second voltage command value operation device for a second voltage command value; a control mode switching device for switching to a first control mode when the revolution number is more than a threshold, and switching to a second control mode when the revolution number is not more than the threshold; and a torque abnormality monitoring device for monitoring an output torque during the second control mode.
Abstract translation: 用于用逆变器控制三相交流电动机的控制装置包括：用于传感器相电流检测值的传感器相电流获取装置; 用于旋转角度检测值的旋转角度获取装置; 用于转数的转数运算装置; 用于当前估计值的电流估计装置; 用于第一电压指令值的第一电压指令值运算装置; 用于电压指令参考值的电压指令参考值运算装置; 用于第二电压指令值的第二电压指令值运算装置; 控制模式切换装置，当所述转数大于阈值时切换到第一控制模式，并且当所述转数不大于所述阈值时切换到第二控制模式; 以及用于在第二控制模式期间监视输出转矩的转矩异常监视装置。
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公开(公告)号：US09093936B2
公开(公告)日：2015-07-28
申请号：US14142415
申请日：2013-12-27
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
Abstract: An apparatus for controlling an AC motor driven by an inverter includes a two-phase calculator for calculating a two-phase control current value based on a first-phase current, a second-phase current, and a rotation angle of the motor, a one-phase calculator for calculating a one-phase control current value based on the first-phase current and the rotation angle, a determinator for determining whether a sudden change occurs based on a fluctuation in a rotation speed of the motor, a switch for selecting the one-phase control current value as a fixed value when no sudden change occurs and selecting the two-phase control current value as the fixed value when the sudden change occurs, and a voltage command value calculator for calculating a voltage command value related to a voltage applied to the inverter based on the current fixed value and a drive command value related to driving of the AC motor.
Abstract translation: 用于控制由逆变器驱动的交流电动机的装置包括：二相计算器，用于基于电动机的第一相电流，第二相电流和旋转角度计算两相控制电流值，一个 相位计算器，用于基于第一相电流和旋转角计算单相控制电流值;确定器，用于基于电动机的转速的波动来确定是否发生突然变化;用于选择 当发生突然变化时，单相控制电流值作为固定值，并且当发生突然变化时选择两相控制电流值作为固定值;以及电压指令值计算器，用于计算与电压相关的电压指令值 基于当前固定值和与AC电动机的驱动相关的驱动指令值施加到逆变器。
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Patent Agency Ranking
公开(公告)号：US09077278B2
公开(公告)日：2015-07-07
申请号：US13774590
申请日：2013-02-22
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
Abstract: A motor control circuit calculates, based on a sensed current of a sensor phase sensed by a current sensor, an estimated current of the other phase and calculates a d-axis and a q-axis estimated currents based on the sensed current of the sensor phase and the estimated current of the other phase. The motor control circuit further calculates a d-axis and a q-axis command voltages based on the estimated currents thereby to control power supply to the AC motor. When the sensed current of the sensor phase is 0 [A], the command voltages are fixed and the estimated current is interpolated. Thus, variations of the command voltages caused by an error in the estimated current are reduced and a rapid change in the estimated current is reduced.
Abstract translation: 电动机控制电路基于由电流传感器感测的传感器相位的感测电流来计算另一相的估计电流，并且基于传感器相的感测电流来计算d轴和q轴估计电流 和另一相的估计电流。 电动机控制电路还基于估计电流进一步计算d轴和q轴指令电压，从而控制对AC电动机的供电。 当传感器相位的感测电流为0 [A]时，指令电压是固定的，并且内插估计的电流。 因此，由估计电流中的误差引起的指令电压的变化减小，并且估计电流的快速变化减小。
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公开(公告)号：US09065378B2
公开(公告)日：2015-06-23
申请号：US13774279
申请日：2013-02-22
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
Abstract: A motor control circuit calculates an α-axis current iα and a β-axis current iβ in a fixed coordinate system based on a W-phase (sensor phase) of an AC motor. The control circuit calculates the α-axis current iα from a current iw.sns sensed in the W-phase, and the β-axis current iβ from a differentiated value Δiα determined from the variation quantity of the α-axis current based on that the α-axis current iα and the β-axis current iβ are in a relation of a sine wave and a cosine wave. Subsequently, the control circuit calculates a current phase xθ=tan−1(iβ/iα) relative to the W-phase. Subsequently, the control circuit calculates an estimation factor according to the current phase xθ and determines an estimated current iu.est in the U-phase of the AC motor by multiplying the sensed current iw.sns by the calculated estimation factor.
Abstract translation: 电机控制电路计算α轴电流iα和a＆bgr; -ax电流i＆bgr; 在基于交流电动机的W相（传感器相位）的固定坐标系中。 控制电路根据从W相中检测到的电流iw.sns计算α轴电流iα，并计算电流i＆bgr; 从根据α轴电流iα和电流i＆bgr的α轴电流的变化量确定的差分值＆Dgr;iα; 是正弦波和余弦波的关系。 随后，控制电路计算相对于W相的电流相位x＆amp; t = tan-1（i＆bgr; /iα）。 随后，控制电路根据当前相位x＆amp; t计算估计因子; 并且通过将所感测的电流iw.sns乘以所计算的估计因子来确定AC电动机的U相中的估计电流iu.est。
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公开(公告)号：US09007009B2
公开(公告)日：2015-04-14
申请号：US14174147
申请日：2014-02-06
Applicant: Denso Corporation
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
CPC classification number: H02P23/005 , B60L15/20 , H02P21/14 , H02P21/22 , Y02T10/7258
Abstract: In a motor control apparatus for controlling an AC motor with an inverter, a current estimation value is calculated based on a current detection value of one phase of the motor and a rotation angle of the motor. A difference between a current command value related to driving of the AC motor and the current estimation value is calculated. A first voltage command value used to generate a drive signal related to driving of the inverter is calculated based on the difference. A sign of the difference is reversed at a reverse interval when the rotation speed is not greater than a determination threshold.
Abstract translation: 在用逆变器控制交流电动机的电动机控制装置中，根据电动机的一相的电流检测值和电动机的旋转角度来计算电流推定值。 计算与AC电动机的驱动相关的电流指令值与当前估计值之间的差。 基于该差来计算用于产生与逆变器的驱动有关的驱动信号的第一电压指令值。 当旋转速度不大于确定阈值时，差异的符号以相反的间隔反转。
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公开(公告)号：US08957616B2
公开(公告)日：2015-02-17
申请号：US14039262
申请日：2013-09-27
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Hirofumi Kako , Takeshi Itoh
CPC classification number: H02P6/12 , B60L3/0038 , B60L3/0061 , B60L3/04 , B60L7/14 , B60L11/005 , B60L11/14 , B60L15/025 , B60L15/2009 , B60L2210/40 , B60L2220/14 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2250/24 , B60L2250/26 , H02P21/14 , H02P21/22 , H02P2205/01 , Y02T10/643 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275
Abstract: A control device for a three-phase alternate current motor includes: a control phase current acquisition means; a monitor phase current acquisition means; a rotation angle acquisition means; a two-phase control current value calculation means; a one-phase current estimated value estimation means; a voltage command value calculation means; an other phase current estimation means for calculating a monitor or a control phase current estimated value; an abnormality detection means for detecting an abnormality in a monitor phase or a control phase current sensor; a number-of-revolutions calculation means for the motor; a number-of-revolutions determination means for determining whether the number of revolutions is not larger than a predetermined determination value; and a switching means between a two-phase control mode when the number of revolutions is not larger than the determination value and a one-phase control mode when the number of revolutions is larger than the determination value.
Abstract translation: 一种用于三相交流电动机的控制装置包括：控制相电流获取装置; 监视相电流获取装置; 旋转角度获取装置; 两相控制电流值计算装置; 一相电流估计值估计装置; 电压指令值计算装置; 用于计算监视器或控制相位电流估计值的另一相电流估计装置; 用于检测监视阶段的异常或控制相电流传感器的异常检测装置; 用于电动机的转数计算装置; 用于确定所述转数是否不大于预定确定值的转数确定装置; 以及当所述转数不大于所述确定值时的两相控制模式之间的转换装置和当所述转数大于所述确定值时的单相控制模式。
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公开(公告)号：US08957613B2
公开(公告)日：2015-02-17
申请号：US14039273
申请日：2013-09-27
Applicant: Denso Corporation
Inventor： Takashi Suzuki , Hirofumi Kako , Takeshi Itoh
CPC classification number: H02P21/146 , H02P21/14 , H02P21/22 , H02P29/027
Abstract: A control device for a three-phase alternate current motor, includes: a control phase current acquisition means; a monitor phase current acquisition means; a rotation angle acquisition means; a two-phase control current value current calculation means; a one-phase current estimated value estimation means; a voltage command value calculation means; an other phase current estimation means for calculating a monitor or a control phase current estimated value; an abnormality detection means for detecting an abnormality in a monitor phase or a control phase current sensor; and a switching means for switching between a monitoring stop mode, in which the voltage command value is calculated based on the two-phase control current value, and a monitoring mode, in which the voltage command value is calculated based on the one-phase current estimated value, and the abnormality detection means detects the abnormality, at predetermined time intervals.
Abstract translation: 一种用于三相交流电动机的控制装置，包括：控制相电流获取装置; 监视相电流获取装置; 旋转角度获取装置; 两相控制电流值电流计算装置; 一相电流估计值估计装置; 电压指令值计算装置; 用于计算监视器或控制相位电流估计值的另一相电流估计装置; 用于检测监视阶段的异常或控制相电流传感器的异常检测装置; 以及切换装置，用于在基于两相控制电流值计算电压指令值的监视停止模式和基于一相电流计算电压指令值的监视模式之间进行切换 估计值，异常检测装置以预定的时间间隔检测异常。
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