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：US09276517B2

公开(公告)日：2016-03-01

申请号：US14174193

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P21/00 ,  H02P29/02 ,  H02P21/06

CPC classification number: H02P29/027 ,  H02P21/06 ,  H02P21/22 ,  H02P29/0243

Abstract: A control device of a three phase AC motor includes: an inverter for driving the motor; a current sensor for sensing current 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. The controller includes: a revolution number calculation device for calculating the revolution number of the motor; a three-phase voltage command operation device for operating three phase voltage commands to be applied to the motor based on a current command and an electric angle; and a current concentration determination device for determining whether a current concentration is caused based on the three phase voltage commands when the revolution number is not more than a predetermined revolution number. In the current concentration, current not less than a predetermined threshold value flows continuously for a predetermined period in one or more phases of the inverter.

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; 用于感测电动机的传感器相中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。 控制器包括：用于计算电动机的转数的转数计算装置; 三相电压指令运算装置，用于根据电流指令和电角度，对三相电压指令进行运算; 以及电流浓度确定装置，用于当转数不大于预定转数时，基于三相电压指令来确定是否引起电流集中。 在电流浓度下，不小于预定阈值的电流在逆变器的一个或多个相位中连续流动一段预定的时间。

公开(公告)号：US09172322B2

公开(公告)日：2015-10-27

申请号：US14067508

申请日：2013-10-30

Applicant: DENSO CORPORATION

Inventor： Ryuji Omata ,  Takeshi Itoh ,  Hirofumi Kako ,  Takashi Suzuki

IPC: H02P21/00 ,  H02P21/14

CPC classification number: H02P21/14 ,  H02P21/20

Abstract: A current estimation section of a motor control apparatus carries out the following processing. When an AC motor is controlled under a current feedback control scheme (sine wave control mode or overmodulation control mode), a β-axis current iβ is calculated based on a current detection value iw_sns in a sensor phase and a current command value iv* in one other phase. When the AC motor is controlled under a torque feedback control scheme (rectangular wave control mode), the β-axis current iβ is calculated based on a differential value Δiα of an α-axis current. Then a sensor phase reference current phase θx is calculated to estimate a U-phase current. Thus it is possible to use the current feedback control scheme and the torque feedback control scheme together.

Abstract translation: 电动机控制装置的电流推定部进行以下处理。 当电流反馈控制方案（正弦波控制模式或过调制控制模式）控制交流电机时，电流i＆bgr; 是基于传感器相位中的电流检测值iw_sns和在另一个相位中的电流指令值iv *计算的。 当交流电机在转矩反馈控制方案（矩形波控制模式）下进行控制时，电流i＆bgr; 基于α轴电流的差分值＆Dgr;iα计算。 然后计算一个传感器相位参考电流相位和x，以估计U相电流。 因此，可以一起使用电流反馈控制方案和转矩反馈控制方案。

公开(公告)号：US09154071B2

公开(公告)日：2015-10-06

申请号：US13867392

申请日：2013-04-22

Applicant: DENSO CORPORATION

Inventor： Takashi Suzuki ,  Takeshi Itoh ,  Hirofumi Kako

IPC: H02P27/00 ,  H02P21/14

CPC classification number: H02P21/14

Abstract: A control apparatus includes an electric current estimation unit to improve a responsiveness of an AC motor. The electric current estimation unit performs, at predetermined intervals, a dq conversion, a correction process, and an inverted dq conversion. The dq conversion calculates d/q axis electric current estimate values based on a detection value of a sensor phase from a sensor, and on an electric current estimate values of two phases of the AC motor other than the sensor phase from a previous cycle. The correction process corrects, during the dq conversion, the d/q axis electric current estimate values in an orthogonal direction that is orthogonal to a sensor phase axis. The inverted dq conversion calculates the electric current estimate values of the two phases other than the sensor phase based on the d/q axis electric current estimate values corrected by the correction process and smoothed by a low-pass filter process.

Abstract translation: 控制装置包括用于提高AC电动机的响应性的电流估计单元。 电流估计单元以预定间隔执行dq转换，校正处理和反向dq转换。 dq转换基于来自传感器的传感器相位的检测值以及来自前一周期的传感器相位以外的AC电动机的两相电流估计值来计算d / q轴电流估计值。 校正处理在dq转换期间校正与传感器相位轴正交的正交方向上的d / q轴电流估计值。 反向dq转换基于由校正处理校正并通过低通滤波处理平滑的d / q轴电流估计值，计算除了传感器相位之外的两相的电流估计值。

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

IPC: H02P21/00 ,  H03K5/00 ,  H02P21/14

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。