公开(公告)号：US20140225537A1

公开(公告)日：2014-08-14

申请号：US14174102

申请日：2014-02-06

Applicant: Denso Corporation

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/00

CPC classification number: H02P21/26 ,  H02P3/18 ,  H02P21/22

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。

公开(公告)号：US20140225535A1

公开(公告)日：2014-08-14

申请号：US14174515

申请日：2014-02-06

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P5/00

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。

公开(公告)号：US20140091743A1

公开(公告)日：2014-04-03

申请号：US14039255

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 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。

公开(公告)号：US20140091740A1

公开(公告)日：2014-04-03

申请号：US14039273

申请日：2013-09-27

Applicant: DENSO CORPORATION

Inventor： Takashi SUZUKI ,  Hirofumi KAKO ,  Takeshi ITOH

IPC: H02P21/14

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。

公开(公告)号：US20130214711A1

公开(公告)日：2013-08-22

申请号：US13774590

申请日：2013-02-22

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Takeshi ITOH ,  Hirofumi KAKO

IPC: H02P21/14

CPC classification number: H02P21/14 ,  H02P21/22

Abstract: A motor control circuit calculates, based on a sensed current of a sensor phase sensed by a current sensor, an estimated current of the other phase and calculates a d-axis and a q-axis estimated currents based on the sensed current of the sensor phase and the estimated current of the other phase. The motor control circuit further calculates a d-axis and a q-axis command voltages based on the estimated currents thereby to control power supply to the AC motor. When the sensed current of the sensor phase is 0 [A], the command voltages are fixed and the estimated current is interpolated. Thus, variations of the command voltages caused by an error in the estimated current are reduced and a rapid change in the estimated current is reduced.

Abstract translation: 电动机控制电路基于由电流传感器感测的传感器相位的感测电流来计算另一相的估计电流，并且基于传感器相的感测电流来计算d轴和q轴估计电流 和另一相的估计电流。 电动机控制电路还基于估计电流进一步计算d轴和q轴指令电压，从而控制对AC电动机的供电。 当传感器相位的感测电流为0 [A]时，指令电压是固定的，并且内插估计的电流。 因此，由估计电流中的误差引起的指令电压的变化减小，并且估计电流的快速变化减小。