公开(公告)号：US20140091742A1

公开(公告)日：2014-04-03

申请号：US14039248

申请日：2013-09-27

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Hirofumi KAKO ,  Takeshi ITOH

IPC: H02P6/12

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：US20130278186A1

公开(公告)日：2013-10-24

申请号：US13867319

申请日：2013-04-22

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: 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。

公开(公告)号：US20130214710A1

公开(公告)日：2013-08-22

申请号：US13774295

申请日：2013-02-22

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/14

CPC classification number: H02P21/14 ,  H02P21/22

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, at each switching time point and each intermediate time point, 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 between every two successive switching time points or intermediate time points. 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: 电动机控制电路基于AC电动机的W相（传感器相位）计算固定坐标系中的α轴电流ia和β轴电流ibeta。 控制电路在每个切换时间点和每个中间时间点计算来自在W相中检测的电流iw.sns的α轴电流ia，并且从由 每两个连续切换时间点或中间时间点之间的α轴电流的变化量。 随后，控制电路计算相对于W相的电流相位xtheta = tan-1（ibeta / ialpha）。 随后，控制电路根据当前相位xthta计算估计因子，并通过将感测的电流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。

公开(公告)号：US20140225538A1

公开(公告)日：2014-08-14

申请号：US14174159

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/00

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：US20140184114A1

公开(公告)日：2014-07-03

申请号：US14142415

申请日：2013-12-27

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/00 ,  H02P6/08

CPC classification number: H02P6/08 ,  H02P21/18 ,  H02P21/22

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。

公开(公告)号：US20130278188A1

公开(公告)日：2013-10-24

申请号：US13867687

申请日：2013-04-22

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: 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, which includes a three phase motor with an electric current detector to detect an electric current detection value of one of the three phases (a sensor phase). The control apparatus includes an electric current estimation unit that repeatedly performs an inverted dq conversion and a dq conversion. The inverted dq conversion calculates an electric current estimate values for phases other than the sensor phase based on the d/q axis electric current estimate values of a previous cycle. The dq conversion calculates the d/q axis electric current estimate values of a current cycle in a rotation coordinate system of the AC motor based on the electric current estimate values calculated by the inverted dq conversion and the electric current detection value of the sensor phase detected by the electric current detector.

Abstract translation: AC电动机的控制装置提高了包括具有电流检测器的三相电动机的交流电动机的电流推定精度，以检测三相（传感器相位）之一的电流检测值。 控制装置包括重复执行反向​​dq转换和dq转换的电流估计单元。 反向dq转换基于前一周期的d / q轴电流估计值来计算除传感器相之外的相的电流估计值。 dq转换基于由反向dq转换计算的电流估计值和检测到的传感器相位的电流检测值，计算交流电动机的旋转坐标系中的当前周期的d / q轴电流估计值 通过电流检测器。

公开(公告)号：US20160336885A1

公开(公告)日：2016-11-17

申请号：US15084014

申请日：2016-03-29

Applicant: DENSO CORPORATION

Inventor： Tetsuya NOMURA ,  Takeshi ITOH

IPC: H02P6/28 ,  H02P6/08

CPC classification number: H02P6/08 ,  H02M7/5395 ,  H02M2001/007 ,  H02P27/08

Abstract: A control system for controlling an electric rotating machine includes an inverter for driving the electric rotating machine, a converter that converts an input voltage thereof to an output voltage equal to a step-up command value, and supplies the output voltage to the inverter, a pulse generation section that generates PWM pulses from a carrier for controlling the inverter in accordance with result of comparison between the carrier and a voltage command to the electric rotating machine, and a command generation section that generates the step-up command value. The command generation section includes a command control section that controls the step-up command value such that a modulation factor defined as an amplitude of the voltage command divided by the output voltage of the converter is changed within a predetermined modulation factor range.

Abstract translation: 用于控制旋转电机的控制系统包括用于驱动旋转电机的逆变器，将其输入电压转换为等于升压指令值的输出电压并将输出电压提供给逆变器的转换器， 脉冲发生部，其根据载波与对旋转电机的电压指令的比较结果，从用于控制逆变器的载波产生PWM脉冲;以及命令生成部，其生成升压指令值。 命令生成部分包括命令控制部分，其控制升压命令值，使得被定义为电压指令的幅度除以转换器的输出电压的调制度在预定的调制系数范围内改变。

公开(公告)号：US20160065073A1

公开(公告)日：2016-03-03

申请号：US14839261

申请日：2015-08-28

Applicant: DENSO CORPORATION

Inventor： Yuichi KATSUKI ,  Takeshi ITOH

IPC: H02M3/158

Abstract: A voltage converter control apparatus controls repetitive switching operations of a voltage converter, for conversion between a terminal voltage of a battery as an input-side voltage and a terminal voltage of a power inverter as an output-side voltage, by determining a command value of duty ratio of the switching in accordance with a command value of the output-side voltage. The voltage converter control apparatus sets a normal duty ratio range defining limit values of the duty ratio for normal operation of the voltage converter, with the limit values being determined based upon information including the command value of the output-side voltage.

Abstract translation: 电压转换器控制装置控制电压转换器的重复切换操作，用于将作为输入侧电压的电池的端子电压和作为输出侧电压的功率逆变器的端子电压之间的转换确定为输出侧电压的指令值 根据输出侧电压的指令值进行切换的占空比。 电压转换器控制装置设定定义电压转换器的正常工作的占空比的极限值的正常占空比范围，其中极限值是基于包括输出侧电压的指令值的信息确定的。

公开(公告)号：US20140225541A1

公开(公告)日：2014-08-14

申请号：US14174200

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: 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：US20140091744A1

公开(公告)日：2014-04-03

申请号：US14039262

申请日：2013-09-27

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Hirofumi KAKO ,  Takeshi ITOH

IPC: H02P6/12

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。