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11. 发明授权

US10547239B2 Voltage converter control apparatus configured to determine a normal duty ratio range based on a command value for the output voltage 有权
公开(公告)号：US10547239B2
公开(公告)日：2020-01-28
申请号：US14839261
申请日：2015-08-28
申请人： DENSO CORPORATION
发明人： Yuichi Katsuki , Takeshi Itoh
IPC分类号： H02M7/48 , H02M1/32 , H02M3/158 , B60L3/12
摘要： 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.

12. 发明授权

US09590551B2 Control apparatus for AC motor 有权
标题翻译：交流电机控制装置
公开(公告)号：US09590551B2
公开(公告)日：2017-03-07
申请号：US14174102
申请日：2014-02-06
申请人： DENSO CORPORATION
发明人： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
IPC分类号： H02P21/00 , H02P3/18
CPC分类号： H02P21/26 , H02P3/18 , H02P21/22
摘要： A control apparatus includes an inverter for driving a three-phase AC motor when connected to a DC power source, a smoothing capacitor interposed between the DC power source and an input side of the inverter and connected in parallel to the DC power source, a current sensor for detecting a current of one phase of the motor, and a controller for controlling the motor through the inverter. The controller performs a discharge process to discharge the capacitor, when the DC power source is disconnected from the capacitor. The controller calculates a d-axis voltage command reference value based on d-axis and q-axis current command values. The controller sets a q-axis voltage command reference value to zero. The controller generates d-axis and q-axis voltage command values by correcting at least the d-axis voltage command reference value and outputs the d-axis and q-axis voltage command values to the inverter.
摘要翻译：控制装置包括：逆变器，用于在连接到直流电源时驱动三相交流电动机;平滑电容器，其插入在所述直流电源和所述逆变器的输入侧之间并联连接到所述直流电源;电流用于检测电动机的一相电流的传感器，以及通过逆变器控制电动机的控制器。当DC电源与电容器断开时，控制器进行放电处理以对电容器放电。控制器基于d轴和q轴电流指令值计算d轴电压指令参考值。控制器将q轴电压指令参考值设置为零。控制器通过至少校正d轴电压指令基准值来生成d轴和q轴电压指令值，并将d轴和q轴电压指令值输出到逆变器。

13. 发明授权

US09374031B2 AC motor control apparatus 有权
标题翻译：交流电机控制装置
公开(公告)号：US09374031B2
公开(公告)日：2016-06-21
申请号：US13867297
申请日：2013-04-22
申请人： DENSO CORPORATION
发明人： Takashi Suzuki , Takeshi Itoh , Hirofumi Kako
IPC分类号： H02P27/04 , H02P21/00 , H02P21/14
CPC分类号： H02P21/14
摘要： 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.
摘要翻译：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。

14. 发明授权

US09160267B2 AC motor control apparatus 有权
标题翻译：交流电机控制装置
公开(公告)号：US09160267B2
公开(公告)日：2015-10-13
申请号：US13774619
申请日：2013-02-22
申请人： DENSO CORPORATION
发明人： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
IPC分类号： H02P21/00 , H02P25/28 , H02P21/14
CPC分类号： H02P21/14 , H02P21/22
摘要： 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.
摘要翻译：传感器相位（W）的参考电流相位感测部分计算α轴电流iα和a＆bgr; -ax电流i＆bgr; 在以传感器相为基底形成的固定坐标系中。基于传感器相位的感测电流iw.sns和电流i＆bgr计算α轴电流iα。基于从d轴指令电流id *和q轴指令电流iq *确定的其他两相（U，V）的指令电流iu *和iv *计算出。然后计算当前阶段x＆thetas; = tan-1（i＆bgr; /iα）。基本波估计部分通过计算与参考电流相位x＆amp;对应的估计系数来计算另一相的估计电流iu.est; 传感器相位的感测电流iw.sns乘以估计系数。

15. 发明授权

US09024553B2 AC motor control apparatus 有权
标题翻译：交流电机控制装置
公开(公告)号：US09024553B2
公开(公告)日：2015-05-05
申请号：US13867687
申请日：2013-04-22
申请人： Denso Corporation
发明人： Takashi Suzuki , Takeshi Itoh , Hirofumi Kako
IPC分类号： H02P21/00 , H02P21/14
CPC分类号： H02P21/14
摘要： 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.
摘要翻译： 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。

16. 发明授权

US08917040B2 AC motor control apparatus 有权
标题翻译：交流电机控制装置
公开(公告)号：US08917040B2
公开(公告)日：2014-12-23
申请号：US13774295
申请日：2013-02-22
申请人： Denso Corporation
发明人： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
IPC分类号： G05B5/00 , H02P21/00 , H02P21/14
CPC分类号： H02P21/14 , H02P21/22
摘要： 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.
摘要翻译：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。控制电路在每个切换时间点和每个中间时间点计算从W相中感测的电流iw.sns的α轴电流iα和电流i＆bgr; 根据每两个连续切换时间点或中间时间点之间的α轴电流的变化量确定的差分值＆Dgr;iα。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。

17. 发明授权

US09762154B2 Control system for electric rotating machine 有权
公开(公告)号：US09762154B2
公开(公告)日：2017-09-12
申请号：US15084014
申请日：2016-03-29
申请人： DENSO CORPORATION
发明人： Tetsuya Nomura , Takeshi Itoh
IPC分类号： H02P6/08 , H02P27/08 , H02M7/5395 , H02M1/00
CPC分类号： H02P6/08 , H02M7/5395 , H02M2001/007 , H02P27/08
摘要： 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.

18. 发明授权

US09276517B2 Control device of AC motor 有权
标题翻译：交流电机控制装置
公开(公告)号：US09276517B2
公开(公告)日：2016-03-01
申请号：US14174193
申请日：2014-02-06
申请人： DENSO CORPORATION
发明人： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
IPC分类号： H02P21/00 , H02P29/02 , H02P21/06
CPC分类号： H02P29/027 , H02P21/06 , H02P21/22 , H02P29/0243
摘要： 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.
摘要翻译：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。

19. 发明授权

US09172322B2 Control apparatus for AC motor 有权
标题翻译：交流电机控制装置
公开(公告)号：US09172322B2
公开(公告)日：2015-10-27
申请号：US14067508
申请日：2013-10-30
申请人： DENSO CORPORATION
发明人： Ryuji Omata , Takeshi Itoh , Hirofumi Kako , Takashi Suzuki
IPC分类号： H02P21/00 , H02P21/14
CPC分类号： H02P21/14 , H02P21/20
摘要： 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.
摘要翻译：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。

20. 发明授权

US09154071B2 AC motor control apparatus 有权
标题翻译：交流电机控制装置
公开(公告)号：US09154071B2
公开(公告)日：2015-10-06
申请号：US13867392
申请日：2013-04-22
申请人： DENSO CORPORATION
发明人： Takashi Suzuki , Takeshi Itoh , Hirofumi Kako
IPC分类号： H02P27/00 , H02P21/14
CPC分类号： H02P21/14
摘要： 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.
摘要翻译：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。

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