Regelung elektrischer Traktionsantriebe in Elektro- und Hybridfahrzeugen (Control of Electric Propulsion Drives in Electric and Hybrid Vehicles)

Permanent magnet synchronous machines are currently the favorits as automotive electrical drives. Their behaviour, however, is considerably different from those of industrial drives due to the specific automotive requirements. Characteristics are a nonlinear reluctance torque, strong magnetic saturation, and a wide constant-power operation range. The paper descibes the structure of a suitable control, addressing the selection of an optimal operation point, the inner current control, and how to cope with the controller saturation due to the supplying DC voltage.