公开(公告)号：US20130278187A1

公开(公告)日：2013-10-24

申请号：US13867392

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 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：US20130278184A1

公开(公告)日：2013-10-24

申请号：US13867282

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. 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：US20130214712A1

公开(公告)日：2013-08-22

申请号：US13774619

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 reference current phase sensing part of a sensor phase (W) calculates an α-axis current iα and a β-axis current iβ in a fixed coordinate system formed with respect to a sensor phase as a base. The α-axis current iα is calculated based on a sensed current iw.sns of the sensor phase and a β-axis current iβ is calculated based on command currents iu* and iv* of the other two phases (U, V) determined from a d-axis command current id* and a q-axis command current iq*. Then a current phase xθ=tan−1(iβ/iα) is calculated. A basic wave estimating part calculates an estimated current iu.est of the other phase by calculating an estimation coefficient corresponding to the reference current phase xθ of the sensor phase and multiplying the sensed current iw.sns of the sensor phase by the estimation coefficient.

Abstract translation: 传感器相位（W）的参考电流相位感测部分计算相对于基于传感器相形成的固定坐标系中的α轴电流ia和β轴电流ibeta。 基于传感器相位的感测电流iw.sns计算α轴电流ia，并且基于由其确定的其他两相（U，V）的指令电流iu *和iv *计算β轴电流ibeta d轴指令电流id *和q轴指令电流iq *。 然后计算当前相位xtheta = tan-1（ibeta / ialpha）。 基本波估计部分通过计算与传感器相位的参考电流相位相对应的估计系数并将感测相位的感测电流iw.sns乘以估计系数来计算另一相的估计电流iu.est。

公开(公告)号：US20140225540A1

公开(公告)日：2014-08-14

申请号：US14174161

申请日：2014-02-06

Applicant: Denso Corporation

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P6/00

CPC classification number: H02P21/22 ,  H02P6/28

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 first voltage command is calculated based on the current estimation value and a current command value related to driving of the motor. A second voltage command is calculated based on information related to an actual behavior of the motor. The information depends on the rotation angle or a phase angle of a current command vector. When a rotation speed of the motor is greater than a threshold, a drive signal related to driving of the inverter is generated based on the first voltage command. When the rotation speed is not greater than the threshold, the drive signal is generated based on the second voltage command.

Abstract translation: 在用逆变器控制交流电动机的电动机控制装置中，基于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。 基于当前估计值和与电动机的驱动相关的电流指令值来计算第一电压指令。 基于与电动机的实际行为相关的信息来计算第二电压指令。 信息取决于电流指令矢量的旋转角度或相位角。 当电动机的转速大于阈值时，基于第一电压指令产生与逆变器的驱动有关的驱动信号。 当转速不大于阈值时，基于第二电压指令产生驱动信号。

公开(公告)号：US20140215825A1

公开(公告)日：2014-08-07

申请号：US14099303

申请日：2013-12-06

Applicant: DENSO CORPORATION

Inventor： Yoshinobu FURUKAWA ,  Takeshi ITOH

IPC: B21D53/06

CPC classification number: B21C37/26 ,  Y10T29/49378 ,  Y10T29/53122

Abstract: The method of manufacturing a fin-integrated tube for a heat exchanger includes step of disposing a rolling roller group including rolling rollers so as to surround the periphery of a tube, each of the roller crests of the rolling rollers being rounded at an end thereof into an R-shape, widths of the R-shaped ends being gradually increased from one axial end to the other axial end for each of the rolling rollers, and step of causing the roller crests to press the periphery of the tube from the one axial end to the other axial end by axially moving and rotating the rolling roller group relative to the tube so as to deform a part of the periphery of the tube into a spirally projecting portion while shaping it into a spiral fin by gradually squeezing the part of the periphery of the tube using the R-shaped end portions.

Abstract translation: 制造用于热交换器的翅片集成管的方法包括以下步骤：将包括滚动辊的滚动辊组设置成围绕管的周边，滚动辊的每一个辊顶端在其端部被倒圆成圆形 R形，R形端部的宽度从每个滚动辊的一个轴向端逐渐增加到另一个轴向端，并且使辊顶从一个轴向端部压出管的周边的步骤 通过相对于管轴向移动和旋转滚动辊组而使管的周边部分变形为螺旋形突出部分，同时通过逐渐挤压周边部分而将其成形为螺旋翅片 使用R形端部。

公开(公告)号：US20140117893A1

公开(公告)日：2014-05-01

申请号：US14067508

申请日：2013-10-30

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO ,  Takashi SUZUKI

IPC: 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：US20130278185A1

公开(公告)日：2013-10-24

申请号：US13867297

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 an AC motor includes a current sensor and an estimation section. The current sensor detects current flowing through one phase of the motor. The estimation section repeats an estimation process. In the estimation process, d-axis and q-axis current estimation values are calculated based on the presently detected current of the one phase and a previous current estimation value of another phase of the motor, and a present current estimation value of each phase is calculated based on smoothed values of the d-axis and q-axis current estimation values. The estimation section performs the estimation process based on a phase lag element. The phase lag element is a difference between the presently detected current and a previous current estimation value of the one phase or the previously detected current.

Abstract translation: 用于交流电动机的控制装置包括电流传感器和估计部分。 电流传感器检测流经电机一相的电流。 估计部分重复估计过程。 在估计处理中，基于当前检测到的一相的电流和电动机的另一相的前一个电流估计值来计算d轴和q轴电流估计值，并且各相的当前估计值为 基于d轴和q轴电流估计值的平滑值计算。 估计部分基于相位滞后元件执行估计处理。 相位滞后元件是当前检测到的电流与一相或先前检测电流的先前电流估计值之间的差。

公开(公告)号：US20130214713A1

公开(公告)日：2013-08-22

申请号：US13774667

申请日：2013-02-22

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/00

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β轴电流来计算相对于传感器相位的轴的电流相位，以及β相垂直 到传感器相位轴。 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命令值来计算β轴电流。

公开(公告)号：US20140225542A1

公开(公告)日：2014-08-14

申请号：US14174213

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P6/08

CPC classification number: H02P6/08 ,  H02P21/22

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。

公开(公告)号：US20140225539A1

公开(公告)日：2014-08-14

申请号：US14174193

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/00

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。