公开(公告)号：US20170373627A1

公开(公告)日：2017-12-28

申请号：US15628404

申请日：2017-06-20

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI

IPC: H02P21/20 ,  H02P6/10 ,  H02P27/04 ,  H02P27/05

CPC classification number: H02P21/20 ,  H02P5/00 ,  H02P6/10 ,  H02P21/05 ,  H02P27/04 ,  H02P27/05 ,  H02P27/06

Abstract: A control apparatus for driving a three-phase rotary electric machine that generates torque including magnet torque and reluctance torque is provided. AC current supplied to two winding groups of the rotary electric machine have the same amplitude and the mutually different phases defined as 30±60×n[deg]. The control unit calculates d-axis current and q-axis current of 6 (2k+1)th order component superposed on a fundamental wave component on dq coordinate, to reduce a peak of the first order component in the phase current, thereby controlling the three-phase rotary electric machine. The control unit calculates current such that an amplitude of the q-axis current of the 6 (2k+1)th order component is larger than an amplitude of the d-axis current of the 6 (2k+1)th order component.

公开(公告)号：US20150075898A1

公开(公告)日：2015-03-19

申请号：US14489103

申请日：2014-09-17

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI

IPC: H02M7/5387 ,  B62D5/04

CPC classification number: H02M7/53871 ,  B62D5/046 ,  B62D5/0472 ,  H02M7/53875 ,  H02M7/5395 ,  H02M2001/0009

Abstract: A power conversion apparatus includes: an inverter unit having high and low potential-side switching elements corresponding to each phase of a winding of a rotating electrical machine; a current detecting unit; a current obtaining unit obtaining a current detection value with a fixed interval sampling timing; and a control unit controlling the switching elements based on a PWM reference signal and a duty instruction value. The control unit includes: a phase current computing device; a voltage instruction value computing device; and a duty computing device. The phase current computing device computes a correction current based on positive and negative side corrected current detection values. The positive-side corrected current detection value is obtained when a duty is adjusted to a positive side, and the negative-side corrected current detection value is obtained when the duty is adjusted to a negative side.

Abstract translation: 一种电力转换装置，包括：逆变器单元，具有与旋转电机的绕组的各相对应的高低电位侧开关元件; 电流检测单元; 电流获取单元以固定间隔采样定时获得电流检测值; 以及控制单元，其基于PWM参考信号和占空指令值来控制开关元件。 控制单元包括：相电流计算装置; 电压指令值计算装置; 和一个负责任的计算设备。 相电流计算装置基于正负校正电流检测值来计算校正电流。 当将负载调整为正侧时获得正侧校正电流检测值，并且当将负载调整为负侧时获得负侧校正电流检测值。

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：US20200207408A1

公开(公告)日：2020-07-02

申请号：US16711794

申请日：2019-12-12

Applicant: DENSO CORPORATION

Inventor： Koichi NAKAMURA ,  Nobuyori NAKAJIMA ,  Go ENDOH ,  Yosuke OGI ,  Atsuko OKA ,  Shuji KURAMITSU ,  Takashi SUZUKI ,  Haruo SUZUKI

IPC: B62D5/04 ,  B62D15/02

Abstract: A motor controller for controlling a motor includes first and second angle sensors detecting motor rotation, and first and second detection circuits detecting rotation number information based on sensor output from the angle sensors. Further, the motor controller includes a steer angle information obtainer obtaining steer angle information involving steering of a vehicle from an external sensor, which is different from the angle sensors, and an abnormality determiner determining abnormality of information that has a matching degree of lower than a preset value when post-conversion information, or value measured by the same characteristics. This information is compared with each other after conversion from the rotation number information and from the steer angle information, and is used by a control amount calculator to calculate a control amount of the motor based on the information determined as having no abnormality by the abnormality determiner.

公开(公告)号：US20200177113A1

公开(公告)日：2020-06-04

申请号：US16688103

申请日：2019-11-19

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI

IPC: H02P5/60 ,  B62D5/04

Abstract: An electronic control unit, for example, a rotating machine controller, is capable of driving one three-phase motor including a first set of three-phase winding and a second set of three-phase winding and one to three direct current motors. The direct current motor is connected to a position between one phase of the first set of three-phase winding and one phase of the second set of three-phase winding without redundancy. Inverters convert a direct current electric power to a three-phase alternating current electric power by an operation of bridge-connected plural switching elements, and apply a voltage to each phase in two sets of three-phase winding. A control unit controls a supply of electric power to the three-phase motor and to the direct current motor by controlling an operation of the switching elements.

公开(公告)号：US20150239501A1

公开(公告)日：2015-08-27

申请号：US14631334

申请日：2015-02-25

Applicant: DENSO CORPORATION

Inventor： Toshihiro FUJITA ,  Takaharu KOZAWA ,  Takashi SUZUKI

IPC: B62D15/02 ,  B62D5/04

CPC classification number: B62D15/0235 ,  B62D5/0481 ,  B62D15/021

Abstract: A rotational angle detecting device continues a portion of operation by electric power from a battery when an electric switch is off. The rotational angle detecting device includes a sensor, a first calculator, a second calculator and a communication portion. The sensor detects a detection value that is variable according to a rotation of a detection object. The first calculator starts calculating first rotational information associated with the rotation of the detection object based on the detection value when the electric switch is turned on. The first calculator stops calculating the first rotational information when the electric switch is turned off. The second calculator calculates second rotational information associated with the rotation of the detection object regardless of an on/off state of the electric switch, based on the detection value. The communication portion outputs the first rotational information and the second rotational information to a controller.

Abstract translation: 当电开关断开时，旋转角检测装置通过来自电池的电力来继续操作的一部分。 旋转角度检测装置包括传感器，第一计算器，第二计算器和通信部分。 传感器检测根据检测对象的旋转而变化的检测值。 当电开关接通时，第一计算器基于检测值开始计算与检测对象的旋转相关联的第一旋转信息。 当电开关关闭时，第一计算器停止计算第一旋转信息。 基于检测值，第二计算器计算与检测对象的旋转相关联的第二旋转信息，而不管电开关的接通/断开状态如何。 通信部分将第一旋转信息和第二旋转信息输出到控制器。

公开(公告)号：US20150077025A1

公开(公告)日：2015-03-19

申请号：US14489073

申请日：2014-09-17

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI

IPC: H02P6/10 ,  H02P6/00 ,  B62D5/04 ,  H02P21/00

CPC classification number: H02P6/10 ,  B62D5/046 ,  B62D5/0463 ,  H02M7/53875 ,  H02M2001/385 ,  H02M2007/53876 ,  H02P21/05

Abstract: A power conversion apparatus includes: an inverter unit having high and low potential-side switching elements corresponding to each phase of a winding of a rotating electrical machine; a current detecting unit; and a control unit controlling the switching elements based on a PWM reference signal and a duty instruction value. The control unit includes: a phase current computing device; and a voltage instruction value computing device. The control unit computes an active voltage vector interval in first and second half periods of one or multiple cycles of the PWM reference signal to be a predetermined period or longer, and computes first and second half duty instruction values to set first and second voltage vector intervals equal to or longer than minimum time to be in the first or second half period.

Abstract translation: 一种电力转换装置，包括：逆变器单元，具有与旋转电机的绕组的各相对应的高低电位侧开关元件; 电流检测单元; 以及控制单元，其基于PWM参考信号和占空指令值来控制开关元件。 控制单元包括：相电流计算装置; 和电压指令值计算装置。 控制单元将PWM参考信号的一个或多个周期的第一和第二半周期中的有效电压矢量间隔计算为预定周期或更长时间，并且计算第一和第二半占空指令值以设置第一和第二电压矢量间隔 等于或长于在第一个或第二个半周期的最短时间。

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：US20140062375A1

公开(公告)日：2014-03-06

申请号：US13945311

申请日：2013-07-18

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI

IPC: H02P25/02

CPC classification number: H02P25/02 ,  H02P21/0085 ,  H02P21/04 ,  H02P21/12 ,  H02P21/22 ,  H02P25/026 ,  H02P25/03

Abstract: An ECU having two inverters outputs AC currents, which have the same amplitude and a phase difference of 30°. When motor magnetic fluxes include distortion component of fifth harmonic, a torque ripple of sixth harmonic is generated in a torque of each drive system. The torque ripples of sixth harmonic are cancelled out in a sum of torques of the two drive systems. A fifth harmonic current having a frequency of fivefold are superimposed on base components of currents so that peak values of the base wave currents are reduced. As a result, heat generation arising from current peak values can be reduced.

Abstract translation: 具有两个逆变器的ECU输出具有相同振幅和相位差为30°的AC电流。 当电动机磁通量包括五次谐波的失真分量时，在每个驱动系统的转矩中产生六次谐波的转矩波动。 六次谐波的扭矩波动以两个驱动系统的转矩之和抵消。 具有五倍频率的五次谐波电流叠加在电流的基极分量上，使得基波电流的峰值减小。 结果，可以降低由当前峰值产生的热产生。