| 摘要 |
A method is proposed for regulating the flux magnitude and torque in an induction machine which is fed via a converter, a model stator current space vector (@sm), a model stator flux space vector (@ mu m), a model actual torque value (Mdm) and a model stator voltage space vector (@sm) being formed. A flux magnitude test signal ( DELTA psi mu ref) is superimposed on a predetermined required flux magnitude value (@ mu ref). The difference torque (Md-Mdm) between the actual torque value (Md) and the model actual torque value (Mdm) is calculated from the current difference (@s-@sm) between the stator current space vector (@s) and the model stator current space vector (ism) and the model stator flux space vector (@ mu m). A signal for adjusting the model rotor resistance (Rrm) is formed by multiplication of this difference torque (Md-Mdm) by the flux magnitude test signal ( DELTA psi mu ref). This model rotor resistance (Rrm) is adjusted via regulation, which acts essentially integrally, until it corresponds with the rotor resistance (Rr). <IMAGE> |
