公开(公告)号：US5270498A

公开(公告)日：1993-12-14

申请号：US704208

申请日：1991-05-22

申请人： Toru Tanahashi

发明人： Toru Tanahashi

IPC分类号： B66B1/30 ,  B66B1/28 ,  H02P21/00 ,  H02P27/06 ,  H02M5/451 ,  H02P5/172

CPC分类号： B66B1/308 ,  H02P21/34

摘要： An elevator speed control apparatus includes an inverter connected to an AC power source so as to supply an induction motor for driving an elevator with a variable-voltage, variable-frequency AC. A contactor provided between the invertor and the AC power source. A magnetic flux computing device computes residual value of secondary magnetic flux of the induction motor while the contactor is closed. A control device divides a primary current of the induction motor into an exciting current component and a torque current component so as to perform vector control, this control device being also used to generate a forcing pattern for the exciting current component in accordance with an output of the magnetic flux computing means when the contactor is closed.

摘要翻译： 电梯速度控制装置包括连接到AC电源的逆变器，以便为具有可变电压的可变频率AC的电梯驱动用的感应电动机。 设置在逆变器和交流电源之间的接触器。 磁通计算装置在接触器闭合时计算感应电动机的次级磁通量的残值。 控制装置将感应电动机的初级电流分为励磁电流分量和转矩电流分量，以执行矢量控制，该控制装置还用于根据输出的输出来产生用于励磁电流分量的强制模式 磁通量计算装置当接触器关闭时。