METHOD FOR CONTROLLING THE CURRENT OUTPUT OF A BATTERY

A method controls the current output of a battery for driving a rail vehicle. A battery actual current Ipasses via a converter to an asynchronous motor, being a drive for the vehicle. The battery actual current Iis set by control circuits as a function of a feedforward control torque Mand a specified torque M. The feedforward control torque Mis calculated using a transfer function H(z), which maps the torque setpoint value Monto the battery actual current Ias follows: I(z) H(z) M(z). Accordingly, a zero-point z=znmp, which lies outside the unit circle, is determined by the transfer function H(z). The feedforward control torque Mis calculated as follows: M(z) I(z)/(H(z) z) where: I(z)=I(z) I(z=znmp) where: I[n]=I[n] for all n>0, so that pole point/zero point cancellation is reached by z=znmp at the battery ideal current.