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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
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。
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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
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。
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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
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。
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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
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。
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公开(公告)号：US09590551B2
公开(公告)日：2017-03-07
申请号：US14174102
申请日：2014-02-06
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
Abstract: 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.
Abstract translation: 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。
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Patent Agency Ranking
公开(公告)号：US09374031B2
公开(公告)日：2016-06-21
申请号：US13867297
申请日：2013-04-22
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Takeshi Itoh , Hirofumi Kako
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。
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公开(公告)号：US09160267B2
公开(公告)日：2015-10-13
申请号：US13774619
申请日：2013-02-22
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
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。
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公开(公告)号：US09024553B2
公开(公告)日：2015-05-05
申请号：US13867687
申请日：2013-04-22
Applicant: Denso Corporation
Inventor： Takashi Suzuki , Takeshi Itoh , Hirofumi Kako
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。
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公开(公告)号：US08917040B2
公开(公告)日：2014-12-23
申请号：US13774295
申请日：2013-02-22
Applicant: Denso Corporation
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
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。
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公开(公告)号：US11594942B2
公开(公告)日：2023-02-28
申请号：US16802908
申请日：2020-02-27
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Hirofumi Kako , Kiyotaka Matsubara , Kazuhito Hayashi , Makoto Nakamura
Abstract: A control apparatus is provided for controlling drive of a rotating electric machine that has coils of two or more phases. The control apparatus includes a first inverter to be connected with first ends of the coils, a second inverter to be connected with second ends of the coils, and a controller. The first inverter has a plurality of first switching elements each corresponding to one of the coils. The second inverter has a plurality of second switching elements each corresponding to one of the coils. The controller includes a first operation circuit configured to generate a first control signal for control of the first inverter and a second operation circuit configured to generate a second control signal for control of the second inverter. Moreover, the control apparatus is configured so that switching timings are synchronized, based on synchronization information, between the first and second inverters.
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