| 摘要 |
A method of minimizing errors in a rotor angle estimate in a synchronous machine the method comprising the steps of determining the stator flux (&PSgr;ssest) of the synchronous machine on the basis of the current model of the synchronous machine, determining the stator flux (&PSgr;ssu') on the basis of the voltage integral and initial value (&PSgr;ssu(n-1)) of the stator flux, and determining the rotor angle (thetaest(n)) of the synchronous machine. The method also comprises the steps of determining an angle correction term (thetak(n)) on the basis of the determined stator fluxes (&PSgr;ssest, &PSgr;ssu'), and adding the angle correction term (thetak(n)) to the determined rotor angle (thetaest(n)) of the synchronous machine to obtain a rotor angle estimate (theta(n)). |
