Dynamic model of a switched reluctance machine for use in a SABER based vehicular system simulation

This paper describes a flexible modelling technique for the dynamic simulation of a switched reluctance machine employed in an automotive turbo-electric application to recuperate electrical energy. Due to the increasing numbers of electrically driven ancillaries and associated electrical load on the vehicle, a model which can be readily employed in a hierarchical system simulation of the vehicle electrical architecture, realised within the SABER environment, is required. The model allows comprehensive modelling of an extensive range of control strategies to be performed and appropriate switching control angles to be identified. Trade-off studies are performed in order to minimise global system losses while ensuring RMS and peak currents, and hence component ratings, are not excessive. The simulation is complemented using accurate iron loss calculations performed on a range of control conditions. A case study of a 70,000 rpm, 2.3 kW switched reluctance machine is presented.