| 摘要 |
Method for defining quadrature-axis magnetizing inductance of a synchronous machine, the synchronous machine being supplied by an inverter. The method comprises steps, wherein the synchronous machine is started without load or with reduced load; the rotor current of the synchronous machine is kept substantially at zero, the synchronous machine is accelerated to initial angular velocity of measurement, the load angle (d<SUB>s</SUB>) of the synchronous machine is guided substantially to 90 degrees, the stator voltage (u<SUB>s</SUB>), the stator current (i<SUB>s</SUB>) and the electrical angular velocity (?) of the synchronous machine is defined and the quadrature-axis magnetizing inductance of the synchronous machine (l<SUB>mq</SUB>) is defined on the basis of the stator voltage (u<SUB>s</SUB>), the stator current (i<SUB>s</SUB>) and the electrical angular velocity (?) of the machine. |
