公开(公告)号：US20080303476A1

公开(公告)日：2008-12-11

申请号：US12132103

申请日：2008-06-03

申请人： Yasusuke IWASHITA ,  Takahiro AKIYAMA ,  Masakazu NIWA ,  Tomohisa TSUTSUMI

发明人： Yasusuke IWASHITA ,  Takahiro AKIYAMA ,  Masakazu NIWA ,  Tomohisa TSUTSUMI

IPC分类号： H02P21/14

CPC分类号： H02P21/0003 ,  H02P21/08 ,  H02P21/22

摘要： An excitation current processor of a current controller processes the excitation current corresponding to the magnetic flux instruction from the magnetic flux instruction processor. It multiplies this excitation current with a boost coefficient to obtain an excitation current instruction. Here, the boost coefficient is determined based on the difference obtained by subtracting the magnetic flux estimation value processed by the magnetic flux processor based on the excitation current feedback from the voltage conversion device from the magnetic flux instruction input from the magnetic flux instruction processor. Further, the boost coefficient can be found from the function of time from the start of the rise of the magnetic flux.

摘要翻译： 电流控制器的励磁电流处理器处理与来自磁通指令处理器的磁通指令对应的励磁电流。 它将该励磁电流与升压系数相乘以获得励磁电流指令。 这里，根据从磁通指令处理器输入的磁通指令，基于从电压变换装置的励磁电流反馈减去由磁通量处理器处理的磁通量估计值而得到的差值来确定升压系数。 此外，可以从磁通量的上升开始的时间的函数中求出升压系数。

公开(公告)号：US20120013287A1

公开(公告)日：2012-01-19

申请号：US13173199

申请日：2011-06-30

申请人： Tadashi OKITA ,  Takahiro AKIYAMA ,  Tomohisa TSUTSUMI

发明人： Tadashi OKITA ,  Takahiro AKIYAMA ,  Tomohisa TSUTSUMI

IPC分类号： H02P27/06

CPC分类号： H02P23/14

摘要： A sensorless induction motor control device with a function of correcting a slip frequency wherein a slip frequency estimation unit estimates the slip frequency from at least one kind of current flowing through windings included in the motor, a voltage command signal value calculation unit calculates a D-phase voltage command signal value and a Q-phase voltage command signal value which are used for controlling a voltage applied to the sensorless induction motor using a Q-phase current command signal value calculated based on a difference between a speed estimation value, which is calculated using an estimation value of the slip frequency, and an externally supplied speed command signal value, an ideal voltage command signal value determination unit determines an ideal voltage command signal value using the speed command signal value and the Q-phase current command signal value, an actual voltage command signal value calculation unit calculates an actual voltage command signal value using the D-phase voltage command signal value and the Q-phase voltage command signal value, and a slip frequency correction unit compares the ideal voltage command signal value with the actual voltage command signal value and changes the estimation value of the slip frequency to make it smaller if the actual voltage command signal value is smaller than the ideal voltage command signal value.

摘要翻译： 一种无传感器感应电动机控制装置，其具有校正转差频率的功能，其中转差频率估计单元从流过包括在电动机中的绕组的至少一种电流估计转差频率，电压指令信号值计算单元计算D- 相电压指令信号值和Q相电压指令信号值，用于使用基于计算出的速度估计值之间的差计算的Q相电流指令信号值来控制施加到无传感器感应电动机的电压 使用转差频率的估计值和外部提供的速度指令信号值，理想电压指令信号值确定单元使用速度指令信号值和Q相电流指令信号值来确定理想电压指令信号值， 实际电压指令信号值计算单元计算实际电压指令信号值us D相电压指令信号值和Q相电压指令信号值，并且转差频率校正单元将理想电压指令信号值与实际电压指令信号值进行比较，并改变转差频率的估计值 如果实际电压指令信号值小于理想电压指令信号值，则该值小。