Method for the controlled imprinting of a stator current and a torque setpoint for a converter-fed induction machine

摘要

The invention relates to a method for the controlled imprinting of a stator current setpoint DOLLAR I1 and a torque setpoint (M¶soll¶) for a converter-fed induction machine (4). According to the invention, current components (I¶Sdsoll¶, I¶Sqsoll¶) in the rotor flux or pole wheel fixed coordinate system (d, q) as a function of a torque setpoint (M¶soll¶), in asynchronous machines of a rotor flux setpoint DOLLAR I2 of a calculated rotor flux Actual value DOLLAR I3 or pole wheel flux calculated, if a stator angular frequency (omega¶S¶) is determined, a terminal flux setpoint DOLLAR I5 is calculated as a function of these values DOLLAR I4 by means of the machine parameters (L, R¶S¶) from selected off-line optimized Flußbahnkurven selected Flußbahnkurve is performed. Thus, one obtains an instantaneous value-oriented control of the position of the stator current DOLLAR I6 to the rotor flux DOLLAR I7 or Polradfluss, whereby a stationary and dynamically exact control of motor currents (I¶¶¶, I¶2¶, I¶3¶) of a rotating field machine (4) and thus their torque (M) is made possible.