| 摘要 |
<p>A method for measuring the motor constant of the vector controller for an induction motor. The voltage output phase υv has an arbitrary preset value and when a current is fed, a current command is inputted in a state where a proportional integration controller is effective and a vector controller is operated. After a motor is operated for a predetermined time, thhe gain of the proportional integration controller is brought to zero and then a voltage command value and a current detection value are measured in a state where the voltage command value is fixed by keeping the integrated value at a constant level. Subsequently, k is measured for currents of two magnitudes and a primary resistance (or line resistance) is determined from the slope.</p> |
