| Abstract |
On electric traction vehicles, a number of electrical and mechanical components and controllers must
be integrated into a complete propulsion system. The controlled traction motor - i.e. the combination
of traction motor, motor inverter and motor controller - plays a key role, as it links the electrical and
mechanical sub-systems. Consequently, the controlled motor and therefore the motor control scheme
has a significant influence on the complete system‘s dynamic properties such as damping behaviour
and stability of electrical and mechanical system parts.
The challenging task to design and tune robust controllers motivated the development of an integrated
analysis method and led to a new type of motor control algorithm.
The paper first describes the main ideas of the analysis method. Then, the method is applied to derive
system requirements and to design a new traction motor control method. Finally, practical
measurements with the new controller on a high-power locomotive are shown. A good match with the
theoretical results and a good controller performance was stated. |
