METHOD AND DEVICE FOR DETERMINING CURRENT SETPOINT FOR ACHIEVING A DESIRED MOTOR TORQUE SETPOINT ON A PERMANENT MAGNET ELECTRIC MOTOR

摘要

The invention relates to a method for determining current setpoints (I _qsoll , I _dsoll ) for generating a desired motor setpoint torque (M _son ) on a permanent magnet-excited electric motor , whereby a current operating point (3) and the desired motor target torque (M _should ) are obtained by means of a control device (2), a coefficient (K _pm ) for a permanent flux torque component is determined as a function of the operating point a permanent flux torque (M _pm ) and a reluctance torque (M _reluctance ) can be determined, based on the determined permanent flux torque (M _pm ) a torque-generating current setpoint (I _qsoll ) is determined, based on the determined reluctance torque (M _reluctance ) a magnetic field-weakening current setpoint (I _dsoll ) is determined, and the determined current target values (I _qsoll , I _dsoll ) are provided for regulation. The invention also relates to an associated device (1).