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31.发明授权公开(公告)号：US09444369B2
公开(公告)日：2016-09-13
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。
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公开(公告)号：US09172322B2
公开(公告)日：2015-10-27
申请号：US14067508
申请日：2013-10-30
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako , Takashi Suzuki
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。
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公开(公告)号：US09154071B2
公开(公告)日：2015-10-06
申请号：US13867392
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 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。
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公开(公告)号：US08957616B2
公开(公告)日：2015-02-17
申请号：US14039262
申请日：2013-09-27
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Hirofumi Kako , Takeshi Itoh
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。
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公开(公告)号：US08957613B2
公开(公告)日：2015-02-17
申请号：US14039273
申请日：2013-09-27
Applicant: Denso Corporation
Inventor： Takashi Suzuki , Hirofumi Kako , Takeshi Itoh
CPC classification number: H02P21/146 , H02P21/14 , H02P21/22 , H02P29/027
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 current 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; and a switching means for switching between a monitoring stop mode, in which the voltage command value is calculated based on the two-phase control current value, and a monitoring mode, in which the voltage command value is calculated based on the one-phase current estimated value, and the abnormality detection means detects the abnormality, at predetermined time intervals.
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; 两相控制电流值电流计算装置; 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; 以及切换装置，用于在基于两相控制电流值计算电压指令值的监视停止模式和基于一相电流计算电压指令值的监视模式之间进行切换 估计值，异常检测装置以预定的时间间隔检测异常。
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Patent Agency Ranking
公开(公告)号：US12249938B2
公开(公告)日：2025-03-11
申请号：US18049440
申请日：2022-10-25
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
Abstract: A rotating machine control device drives a multi-phase rotating machine and a direct-current rotating machine. The control unit controls an operation of an inverter switching element and a direct current rotating machine switch in a drive circuit of the multi-phase rotating machine and the direct current rotating machine. The control unit has an anomaly detection unit for detecting an anomaly in the multi-phase power converter or the multi-phase rotating machine, or an anomaly in a direct current rotating machine switch or the direct current rotating machine. The control unit changes the switching operation of the inverter switching element and the direct current rotating machine switch according to the anomaly.
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公开(公告)号：US12212268B2
公开(公告)日：2025-01-28
申请号：US18186858
申请日：2023-03-20
Applicant: DENSO CORPORATION
Inventor： Yusuke Shibata , Takashi Suzuki
IPC: H02P3/12 , B60L50/51 , H02M7/5395 , H02P5/505 , H02P5/68
Abstract: A motor control device drives first and second motors for outputting torque in braking or non-braking direction in a vehicle brake device, includes: an electric power converter that includes first to third legs having positive and negative switch elements; and a control unit. When the control unit energizes from the positive switch element of the first or third leg to the negative switch element of the second leg, the first and second motors output the torque in a same direction. When an absolute value of current flowing or estimated to flow in at least one of the first motor and the second motor exceeds a current threshold, the control unit drives the positive and negative switch elements of the second leg.
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公开(公告)号：US11811338B2
公开(公告)日：2023-11-07
申请号：US17660912
申请日：2022-04-27
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
CPC classification number: H02P5/60 , B62D1/187 , B62D5/0463 , H02M7/537 , H02P27/06
Abstract: One or more multiphase power converters are connected to a positive electrode and a negative electrode of a power supply via a high potential line and a low potential line, respectively, convert DC power of the power supply into multiphase alternate current power by operations of a plurality of inverter switching elements, and apply a voltage to each of phase windings of a multiphase winding set. A DC rotating machine switch including switches on a high potential side and a low potential side connected in series via a DC motor terminal connected to a second terminal that is an end of the DC rotating machine on an opposite side to a first terminal. The DC rotating machine switch generates a voltage of the DC motor terminal variable by switching. A control unit controls operations of the inverter switching elements and the DC rotating machine switch.
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公开(公告)号：US11807316B2
公开(公告)日：2023-11-07
申请号：US16559946
申请日：2019-09-04
Applicant: DENSO CORPORATION
Inventor： Ryo Kano , Daisuke Kobayashi , Takashi Suzuki
CPC classification number: B62D5/0484 , B62D1/20 , B62D3/126 , B62D5/0412 , B62D5/0463 , B62D15/0235
Abstract: A power steering apparatus has a first actuator provided as a multi-phase rotating electric machine and disposed on a steering column side of an intermediate shaft and a second actuator disposed on a rack gear side thereof. A first ECU controls a drive of the first actuator and detects an abnormality of the first actuator. The first ECU changes an output of the first actuator based on a notification from a communication bus. The first ECU performs an initial diagnosis of the first actuator at a vehicle startup time for detecting abnormality, by supplying an electric power to the first actuator for not providing a torque to a steering wheel.
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公开(公告)号：US11731694B2
公开(公告)日：2023-08-22
申请号：US16931330
申请日：2020-07-16
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
CPC classification number: B62D6/008 , B62D5/006 , B62D5/0481
Abstract: In a steering control apparatus, a reaction force torque command value is calculated so that a detection value of a torque sensor follows a target value obtained by adding at least a viscosity command value and a return command value to a steering torque command value, and an electric current that flows to a reaction force rotary electric machine is controlled based on the reaction force torque command value. Whether a steering state is a turning state or a returning state is determined by comparing a physical quantity corresponding to an output torque of a reaction force device and the detection value of the torque sensor. Characteristics of one or more of a reaction force amount operation, a viscosity amount operation, and a return amount operation are made differ between the turning state and the returning state.
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