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公开(公告)号：US20160248350A1
公开(公告)日：2016-08-25
申请号：US15046180
申请日：2016-02-17
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
CPC classification number: H02P6/10 , B62D5/046 , H02M1/14 , H02M7/48 , H02M7/5387 , H02P25/22 , H02P27/08 , H02P29/68
Abstract: A power converter that reduces a ripple of a torque and a ripple of an electric current in a switch period, having a controller including an instruction calculator that calculates a first voltage instruction value and a second voltage instruction value when, in a first period, a first neutral point voltage is shifted below a center-of-output value, and a second neutral point voltage is shifted above the center-of-output value, and, in a second period, the first neutral point voltage is shifted above the center-of-output value, and the second neutral point voltage is shifted below the center-of-output value.
Abstract translation: 一种功率转换器，其在开关周期内减小转矩的纹波和电流的纹波，具有包括计算第一电压指令值和第二电压指令值的指令计算器的控制器，当在第一周期中， 第一中性点电压被转换到低于输出中心值，并且第二中性点电压偏移到输出中心值以上，并且在第二时段中，第一中性点电压偏移到中心点电压以上， 的输出值，第二中性点电压偏移到输出中心值以下。
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公开(公告)号：US20160006387A1
公开(公告)日：2016-01-07
申请号：US14793390
申请日：2015-07-07
Applicant: DENSO CORPORATION
Inventor： Kouichi Nakamura , Takashi Suzuki , Yoshitaka Hayashi
CPC classification number: H02P25/22 , B62D5/0463 , B62D5/0484 , B62D5/0487 , H02P6/12 , H02P29/0241 , H02P29/032
Abstract: A rotary machine control apparatus controlling a drive of a rotary machine that has multiple winding groups is provided. The rotary machine control apparatus includes electric power converters in multiple systems, a failure detection portion, and a control portion. An electric power converter has switching elements in an upper arm and a lower arm and converts DC power. The failure detection portion detects a failure of an electric power converter or a winding group. The control portion calculates a current command value and a maximum current limit value, and controls an output to the electric power converter. The control portion stops the output to the electric power converter in a failure system, and the control portion increases the maximum current limit value with respect to the output to an electric power converter in a normal system.
Abstract translation: 提供一种控制具有多个绕组的旋转机械的驱动的旋转机械控制装置。 旋转机械控制装置包括多个系统中的电力转换器，故障检测部分和控制部分。 电力转换器具有上臂和下臂中的开关元件，并转换直流电力。 故障检测部检测电力转换器或绕组组的故障。 控制部分计算电流指令值和最大电流限制值，并且控制对电力转换器的输出。 控制部在失效系统中停止向电力转换器的输出，并且控制部在正常系统中将对于输出的最大电流限制值增加到电力转换器。
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公开(公告)号：US09154064B2
公开(公告)日：2015-10-06
申请号：US14039255
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 AC motor includes: an inverter having switching elements; current sensors for sensing a 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 switching elements based on the voltage command. When a positive and negative offset abnormality occurs, the control means executes a positive and negative offset abnormality detection process that the control means compares a value, which is obtained by integrating a variation in a voltage command of each phase over a predetermined detection interval, with a predetermined abnormality threshold value, the voltage command being outputted by the feedback control operation part with respect to a variation in the current caused by the positive and negative offset abnormality.
Abstract translation: 一种用于三相AC电动机的控制装置，包括：具有开关元件的逆变器; 电流传感器，用于感测电机中的电流; 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开关元件。 当发生正负偏移异常时，控制装置执行正偏移异常检测处理和负偏移异常检测处理，控制装置将通过将预定检测间隔的各相电压指令的变化积分而得到的值与通过 预定的异常阈值，由反馈控制操作部分输出的电压指令相对于正偏移异常引起的电流变化。
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公开(公告)号：US09041324B2
公开(公告)日：2015-05-26
申请号：US13867282
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. 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。
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公开(公告)号：US12184209B2
公开(公告)日：2024-12-31
申请号：US18065470
申请日：2022-12-13
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
Abstract: A motor control device for a motor including first and second winding sets, includes: first and second inverters; and a control unit that controls the first and second inverters by differentiating a magnitude of current flowing through the first winding set and a magnitude of current flowing through the second winding set, or by restricting an output voltage of the second inverter so as to reduce a first output voltage from the first inverter to the first winding set when the first output voltage is higher than a first upper limit voltage.
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Patent Agency Ranking
公开(公告)号：US11685432B2
公开(公告)日：2023-06-27
申请号：US16597145
申请日：2019-10-09
Applicant: DENSO CORPORATION
Inventor： Haruo Suzuki , Nobuyori Nakajima , Koichi Nakamura , Go Endoh , Atsuko Oka , Takashi Suzuki , Yosuke Ogi , Shuji Kuramitsu
CPC classification number: B62D6/008 , B60Q9/00 , B62D5/0481 , B62D15/021
Abstract: A rotation detector has a first controller that monitors abnormality of a rotation number calculated by a rotation number calculator based on the calculated rotation number and a preset rotation angle. The first controller in a first system is configured to output rotation information calculated by a second controller in a second system upon having determination that the rotation number of the first system has abnormality, for a continuation of the rotation information calculation.
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57.发明授权公开(公告)号：US11616466B2
公开(公告)日：2023-03-28
申请号：US17221360
申请日：2021-04-02
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Daisuke Kobayashi , Masaya Taki
IPC: H02P29/024 , H02P27/12 , B62D5/04 , H02P21/22 , H02P25/22
Abstract: A current sensor state determination device determines that an abnormality is caused in a current sensor when a sum of phase currents based on current detection values from each of the current sensors in three phases is greater than a first determination value, and determines that no abnormality is caused in the current sensor when the sum of phase currents is equal to or less than the first determination value. The state determination device determines that the current sensor is normal when it is determined that (i) no abnormality is caused in a preset electric angle range equal to or less than one electric-angle cycle of the rotating electric machine and (ii) a value of an electric current flowing in the rotating electric machine in a rotating coordinates system calculated based on the current detection value is equal to or greater than a second determination value.
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公开(公告)号：US11533016B2
公开(公告)日：2022-12-20
申请号：US16509927
申请日：2019-07-12
Applicant: DENSO CORPORATION
Inventor： Haruo Suzuki , Takashi Suzuki
Abstract: A control unit determines a presence or absence of a short-circuit failure with respect to a target switch which is a phase-opening switch to be determined. At this time, after opening all the phase opening switches, the control unit drives an inverter to connect a power supply line provided with the target switch among the phase opening switches to ground. The control unit determines that the target switch has a short-circuit failure when a voltage of the power supply line in which the target switch is not provided is smaller than a predetermined voltage.
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公开(公告)号：US10526005B2
公开(公告)日：2020-01-07
申请号：US16242314
申请日：2019-01-08
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
IPC: B62D5/04 , H02M7/5387 , H02M1/00 , H02M1/32
Abstract: A power converter for a three-phase electric rotary machine including first and second winding sets includes: first and second inverters corresponding to the first and second winding sets, respectively; and a control unit including a command calculation unit that calculates first and second voltage command values related to voltages to be applied to the first and second winding sets, and an excess correction unit that corrects first and second voltage command corresponding values corresponding to the first and second voltage command values. When one of the first and second voltage command corresponding values exceeds a limitation value which is set in accordance with a voltage capable of being outputted, the excess correction unit performs an excess correction process for correcting the other of the first and second voltage command corresponding values in accordance with an excess amount over the limitation value.
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公开(公告)号：US20190103828A1
公开(公告)日：2019-04-04
申请号：US16146756
申请日：2018-09-28
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Hiroyasu Otake
Abstract: A controller of a multiphase rotating electric machine has two inverters outputting an alternating current to two sets of windings, and a control section driving a motor by switching between a “two-system driving mode” supplying power from the two inverters to the two sets of winding and a “one-system driving mode” supplying power from one of the two inverters to the corresponding set of windings, The control section in the one-system driving mode changes at least one of a maximum amplitude and a current phase of the alternating current used in the two-system driving mode to compensate for a reluctance torque generated by a mutual inductance of the two sets of winding in the two-system driving mode.
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