| 摘要 |
PURPOSE:To conduct quick vector control with high performance by using the self-inductance of a secondary winding for an induction motor and a secon dary resistor in order to acquire torque component currents and slip-angle frequency. CONSTITUTION:The control-signal reference thetam' of the rotor rotational angular speed of an induction motor, a detection signal thetam from a pulse generator 11, a slip-angle frequency control-signal reference thetas from a divider 13 and the measured value T1 of a primary-winding temperature are input to a secondary- circuit constant arithmetic device 5. A CPU 9 performs computation by a value corresponding to the shape of a slot for the induction motor, and arithmetically operates the self-inductance L22 of a secondary winding and secondary resistance R2. The arithmetic circuit is output to an L22/M coefficient multiplier 2 and an R2/L22 coefficient multiplier 3 mounted into a vector control circuit through an output port 17. |
