公开(公告)号：US20150115864A1

公开(公告)日：2015-04-30

申请号：US14520393

申请日：2014-10-22

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Shuji MATSUDA ,  Hideaki IURA

IPC: H02P27/06 ,  H02P23/00

CPC classification number: H02P27/06 ,  H02P1/029 ,  H02P1/28 ,  H02P1/30 ,  H02P23/28

Abstract: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an upper limit of a second range over time. When a current through the motor exceeds a first threshold in the voltage increase mode, a mode changer changes the mode to the frequency decrease mode. When the current through the motor becomes smaller than a second threshold in the frequency decrease mode, the mode changer changes the mode to the voltage increase mode to control the motor to change from a free running state to a state in which the voltage and the frequency satisfy a relationship. A determinator determines whether the voltage and the frequency satisfy the relationship.

Abstract translation: 电动机控制装置包括电压调节器，用于执行电压增加模式，以从第一范围的下限随时间增加施加到感应电动机的电压。 频率调节器执行频率降低模式，以随着时间从第二范围的上限降低电压的频率。 当通过电动机的电流在电压增加模式下超过第一阈值时，模式转换器将模式改变为频率降低模式。 当在频率降低模式下通过电动机的电流变得小于第二阈值时，模式改变器将模式改变为电压增加模式，以控制电动机从自由运行状态转变为电压和频率的状态 满足关系 确定器确定电压和频率是否满足关系。

公开(公告)号：US20150115865A1

公开(公告)日：2015-04-30

申请号：US14521619

申请日：2014-10-23

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Shuji MATSUDA ,  Hideaki IURA

IPC: H02P27/06 ,  H02P23/00

CPC classification number: H02P27/06 ,  H02P1/029 ,  H02P23/28

Abstract: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an upper limit of a second range over time. The frequency regulator limits decrease of the frequency when a bus voltage of a bus exceeds a first threshold in the frequency decrease mode. The bus supplies DC power to an inverter to drive the motor. A mode changer alternatively changes the voltage increase mode and the frequency decrease mode to control the motor to change from a free running state to a state in which the voltage and the frequency satisfy a relationship. The determinator determines whether the voltage and the frequency satisfy the relationship.

Abstract translation: 电动机控制装置包括电压调节器，用于执行电压增加模式，以从第一范围的下限随时间增加施加到感应电动机的电压。 频率调节器执行频率降低模式，以随着时间从第二范围的上限降低电压的频率。 在频率降低模式下，当总线总线电压超过第一阈值时，频率调节器限制频率的降低。 总线为逆变器提供直流电，以驱动电机。 变换器交替地改变升压模式和频率降低模式，以控制电动机从自由运行状态转变为电压和频率满足关系的状态。 确定器确定电压和频率是否满足关系。