Deadbeat direct torque control of induction machines using self-sensing at low and zero speed.

摘要

This thesis develops, analyzes and experimentally verifies a new direct torque control method that is based on a deadbeat solution with stator and rotor flux linkage as state variables. This choice of state variables allows an insightful graphical representation of the solution including realistic voltage and current limitations. Additionally, the self-sensing technique is combined with the new deadbeat direct torque control for low speed sensorless operation. A NASA 400 Hz induction machine, originally designed for an electro-mechanical actuator application, is used in the research.