公开(公告)号：US09077273B2

公开(公告)日：2015-07-07

申请号：US14174159

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P21/00 ,  H02P3/18 ,  H02P21/06 ,  H02P21/14

CPC classification number: H02P21/0035 ,  H02P3/18 ,  H02P21/06 ,  H02P21/22 ,  H02P21/34

Abstract: A control device of a three phase AC motor includes: an inverter for driving the motor; a current sensor for sensing current flowing in a sensor phase of the motor; and a controller for switching multiple switching elements in the inverter to control the current of the motor. An electric angle is defined as θe based on one phase. A phase is defined as φ based on a dq axis. A phase angle of a current command vector is defined as (θe+φ+C). When the motor is stopped, the controller determines whether the current command vector is orthogonal to an axis of the sensor phase. When the current command vector is orthogonal to the axis of the sensor phase, the controller operates the phase or the electric angle to set the current command vector not to be orthogonal to the axis of the sensor phase.

Abstract translation: 三相交流电动机的控制装置包括：用于驱动电动机的逆变器; 用于感测在电动机的传感器相中流动的电流的电流传感器; 以及用于切换逆变器中的多个开关元件以控制电动机的电流的控制器。 电角度被定义为：基于一个相位。 一个阶段定义为＆phgr; 基于dq轴。 电流指令矢量的相位角定义为（＆Thetas; e +＆phgr; + C）。 当电机停止时，控制器确定当前命令矢量是否与传感器相位的轴正交。 当电流指令矢量与传感器相位轴正交时，控制器运行相位或电角度，使电流指令矢量不与传感器相位轴正交。

公开(公告)号：US08981688B2

公开(公告)日：2015-03-17

申请号：US14039248

申请日：2013-09-27

Applicant: Denso Corporation

Inventor： Takashi Suzuki ,  Hirofumi Kako ,  Takeshi Itoh

IPC: H02P21/00 ,  H02H7/08 ,  H02H7/09 ,  H02P6/12 ,  H02P29/02 ,  H02P21/14

CPC classification number: H02P6/12 ,  H02P21/14 ,  H02P21/22 ,  H02P29/027

Abstract: A control device for a three-phase alternate current motor includes: an inverter for driving the motor; current sensors for sensing current in the motor; and a control means having a feedback control operation part for operating a voltage command of each phase and switching the inverter based on the voltage command. When an absolute value of a sum of the current sensed values of three phases is larger than a threshold, the control means: executes a provisional current sensor system abnormality determination; generates a variation visualizing state, in which a response of a feedback control with respect to a variation in the current sensed value caused by the abnormality is delayed or stopped; and performs a phase identification processing for identifying the current sensor on a phase, in which an absolute value of a current deviation is larger than a threshold.

Abstract translation: 一种用于三相交流电动机的控制装置包括：用于驱动电动机的逆变器; 用于感测电机中电流的电流传感器; 以及控制装置，具有用于操作各相的电压指令的反馈控制操作部，并且基于电压指令切换逆变器。 当三相电流检测值之和的绝对值大于阈值时，控制装置执行临时电流传感器系统异常判定; 产生变化可视化状态，其中相对于由异常引起的当前感测值的变化的反馈控制的响应被延迟或停止; 并且执行用于识别电流偏差的绝对值大于阈值的相位上的电流传感器的相位识别处理。

公开(公告)号：US09154064B2

公开(公告)日：2015-10-06

申请号：US14039255

申请日：2013-09-27

Applicant: DENSO CORPORATION

Inventor： Takashi Suzuki ,  Hirofumi Kako ,  Takeshi Itoh

IPC: H02H7/09 ,  H02P6/12 ,  H02P29/02 ,  H02P21/00 ,  H02P21/14

CPC classification number: H02P6/12 ,  H02P21/14 ,  H02P21/22 ,  H02P29/027

Abstract: A control device for a three-phase AC motor includes: an inverter having switching elements; current sensors for sensing a current in the motor; and a control means having a feedback control operation part for operating a voltage command of each phase and switching the switching elements based on the voltage command. When a positive and negative offset abnormality occurs, the control means executes a positive and negative offset abnormality detection process that the control means compares a value, which is obtained by integrating a variation in a voltage command of each phase over a predetermined detection interval, with a predetermined abnormality threshold value, the voltage command being outputted by the feedback control operation part with respect to a variation in the current caused by the positive and negative offset abnormality.

Abstract translation: 一种用于三相AC电动机的控制装置，包括：具有开关元件的逆变器; 电流传感器，用于感测电机中的电流; 以及控制装置，具有用于操作各相的电压指令的反馈控制操作部，并且基于电压指令切换开关元件。 当发生正负偏移异常时，控制装置执行正偏移异常检测处理和负偏移异常检测处理，控制装置将通过将预定检测间隔的各相电压指令的变化积分而得到的值与通过 预定的异常阈值，由反馈控制操作部分输出的电压指令相对于正偏移异常引起的电流变化。

公开(公告)号：US09106170B2

公开(公告)日：2015-08-11

申请号：US14174200

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P1/04 ,  H02P6/00 ,  H02H7/09 ,  H02P21/00 ,  H02P27/04

CPC classification number: H02P21/0035 ,  H02P21/22 ,  H02P27/04

Abstract: A control device for controlling a three phase AC motor with an inverter includes: a current acquisition device for a current of the motor; a rotation angle acquisition device for a rotation angle of the motor; 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 first and second control modes generating a drive signal of the inverter based on the first and second voltage command value, respectively; and a number-of-revolutions operation device. When the revolution number is more than a threshold, the first control mode is selected. When the revolution number is not more than the threshold, the second control mode is selected.

Abstract translation: 用于控制具有逆变器的三相交流电动机的控制装置包括：用于电动机电流的电流获取装置; 用于所述电动机的旋转角度的旋转角度获取装置; 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，用于分别基于第一和第二电压指令值产生逆变器的驱动信号的第一和第二控制模式; 和转数运算装置。 当转数大于阈值时，选择第一控制模式。 当转速不大于阈值时，选择第二控制模式。

公开(公告)号：US09065365B2

公开(公告)日：2015-06-23

申请号：US14055280

申请日：2013-10-16

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P21/00 ,  H02P6/10

CPC classification number: H02P6/10 ,  H02P21/05 ,  H02P21/10

Abstract: A control device for controlling an AC motor with an inverter includes: a current acquisition device of a sensor phase current sensed value of the motor in a sensor phase current sensing cycle; a rotation angle acquisition device of a rotation angle sensed value of the motor; a current command value operation device for updating a current command value in a command update cycle; a current estimation device; a voltage command value operation device; a drive signal generation device; and a sudden change prevention device for preventing the voltage command value from a sudden change according to a sudden change in the current estimated value. The sudden change of the current estimated value is caused by a sudden change in the current command value.

Abstract translation: 一种用逆变器控制交流电动机的控制装置包括：传感器相电流检测周期中电动机的传感器相电流检测值的电流获取装置; 电动机的旋转角度检测值的旋转角度获取装置; 用于在命令更新周期中更新当前命令值的当前命令值操作装置; 当前估计装置; 电压指令值运算装置; 驱动信号发生装置; 以及用于根据当前估计值的突然变化来防止电压指令值突然变化的突变防止装置。 当前估计值的突然变化是由当前指令值的突然变化引起的。

公开(公告)号：US09041324B2

公开(公告)日：2015-05-26

申请号：US13867282

申请日：2013-04-22

Applicant: DENSO CORPORATION

Inventor： Takashi Suzuki ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P6/00 ,  H02P21/14

CPC classification number: H02P21/14

Abstract: A control apparatus of an AC motor improves an electric current estimation accuracy of the AC motor. The control apparatus includes an electric current estimation unit that repeatedly performs an inverted dq conversion, a dq conversion, and a correction process. Based on a d/q axis electric current estimate values of a previous cycle, the inverted dq conversion calculates an electric current estimate value of a sensor phase. The dq conversion calculates a d/q axis electric current correction values based on an electric current estimation error of the sensor phase, which is derived from the electric current estimate value and the electric current detection value detected by an electric current detector. The correction process calculates the d/q axis electric current estimate values of a current cycle by correcting the d/q axis electric current estimate values of the previous cycle by using the d/q axis electric current correction values.

Abstract translation: 交流电动机的控制装置提高交流电动机的电流推定精度。 控制装置包括重复执行反向​​dq转换，dq转换和校正处理的电流估计单元。 基于前一周期的d / q轴电流估计值，反向dq转换计算传感器相的电流估计值。 dq转换根据从电流估计值和由电流检测器检测的电流检测值导出的传感器相位的电流估计误差来计算d / q轴电流校正值。 校正处理通过使用d / q轴电流校正值来校正前一周期的d / q轴电流估计值来计算当前周期的d / q轴电流估计值。

公开(公告)号：US20140225551A1

公开(公告)日：2014-08-14

申请号：US14174147

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P23/00

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。

公开(公告)号：US20140103844A1

公开(公告)日：2014-04-17

申请号：US14055280

申请日：2013-10-16

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P6/10

CPC classification number: H02P6/10 ,  H02P21/05 ,  H02P21/10

Abstract: A control device for controlling an AC motor with an inverter includes: a current acquisition device of a sensor phase current sensed value of the motor in a sensor phase current sensing cycle; a rotation angle acquisition device of a rotation angle sensed value of the motor; a current command value operation device for updating a current command value in a command update cycle; a current estimation device; a voltage command value operation device; a drive signal generation device; and a sudden change prevention device for preventing the voltage command value from a sudden change according to a sudden change in the current estimated value. The sudden change of the current estimated value is caused by a sudden change in the current command value.

Abstract translation: 一种用逆变器控制交流电动机的控制装置包括：传感器相电流检测周期中电动机的传感器相电流检测值的电流获取装置; 电动机的旋转角度检测值的旋转角度获取装置; 用于在命令更新周期中更新当前命令值的当前命令值操作装置; 当前估计装置; 电压指令值运算装置; 驱动信号发生装置; 以及用于根据当前估计值的突然变化来防止电压指令值突然变化的突变防止装置。 当前估计值的突然变化是由当前指令值的突然变化引起的。

公开(公告)号：US09120388B2

公开(公告)日：2015-09-01

申请号：US14174515

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P5/00 ,  H02P21/00 ,  H02P1/04 ,  B60L11/14 ,  H02P5/74 ,  H02P5/747

CPC classification number: B60L11/14 ,  B60L3/0061 ,  B60L3/0092 ,  B60L11/123 ,  B60L15/025 ,  B60L15/20 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/427 ,  B60L2240/429 ,  B60L2240/441 ,  B60L2240/443 ,  B60L2240/486 ,  B60L2240/507 ,  B60L2240/527 ,  B60L2240/529 ,  H02P5/74 ,  H02P5/747 ,  Y02T10/6217 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/72 ,  Y02T10/7275

Abstract: In a system for driving a three-phase rotating electrical machine of drive sources for applying separate drive forces to a rotary shaft, a phase of the rotating electrical machine, a current of which is detected by a current sensor and capable of being used for control of the rotating electrical machine, is defined as an effective sensor-phase of the rotating electrical machine. When the number of the effective sensor-phases is one, the rotating electrical machine is driven in a one-phase control mode based on the current of the effective sensor-phase under a condition where a rotation speed of the rotating electrical machine is greater than a predetermined positive threshold, and driven by the drive forces of the other drive sources under a condition where the rotation speed is not greater than the threshold.

Abstract translation: 在用于驱动用于向旋转轴施加分开的驱动力的驱动源的三相旋转电机的系统中，旋转电机的相位由电流传感器检测并能够用于控制 的旋转电机定义为旋转电机的有效传感器相位。 当有效传感器相位数为1时，旋转电机在旋转电机的转速大于的条件下，基于有效传感器相的电流，以单相控制方式驱动 预定的正阈值，并且在旋转速度不大于阈值的条件下由其他驱动源的驱动力驱动。

公开(公告)号：US09035580B2

公开(公告)日：2015-05-19

申请号：US13867319

申请日：2013-04-22

Applicant: DENSO CORPORATION

Inventor： Takashi Suzuki ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P21/00 ,  H02P21/14

CPC classification number: H02P21/14

Abstract: A control apparatus 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 current estimation section repeats dq transformation and inverse dq transformation in a predetermined cycle. In the dq transformation, a d-axis current estimation value and a q-axis current estimation value in a rotating coordinate system of the AC motor are calculated based on the detected current and a previous current estimation value of another phase of the AC motor. In the inverse dq transformation, a present current estimation value of the other phase to be obtained at a time of angle advance of one period of the cycle is calculated based on smoothed values of the d-axis current estimation value and the q-axis current estimation value.

Abstract translation: 一种用于三相AC电动机的控制装置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。 当前估计部分以预定的周期重复dq变换和逆dq变换。 在dq变换中，基于检测到的电流和交流电动机的另一相的前一电流推定值，计算交流电动机的旋转坐标系中的d轴电流估计值和q轴电流推定值。 在逆dq变换中，基于d轴电流估计值和q轴电流的平滑值来计算在周期的一个周期的角度前进时获得的另一相位的当前电流估计值 估计值。