| Abstract |
This paper presents a torque maximization control strategy of a high speed switched reluctance machineand describes an indirect torque measurement based on acceleration. The SRM operates as aStarter/Generator for a more electric aircraft application with the requirement of an average torque of atleast 15 Nm up to a speed of 27,000 rpm, which must be available for 15 s according to [4]. Maximumtorque acceleration is intended to be used to start up the turbine to idle speed. The acceleration methodwas used to validate the torque-speed characteristic in the described starting mode. Both in high accelerationand high speed systems, a direct torque measurement would be a big challenge because of thedelay time of the torque sensor. Therefore, the torque was measured indirectly by analyzing the accelerationaccording to the speed rise. In order to achieve numerically stable results, an additional inertia wasprovided. |
