Fuzzy-based direct torque control for three-level inverter traction motor

With traction motor control system as the research object, this thesis proposes three-level inverter traction motor direct torque control(DTC) based on the fuzzy control, which study the control technique of traction motor. Simulation experiments show that: three-level inverter traction motor direct torque control based on the fuzzy control can not only double the capacity, but also can make the output current, voltage harmonic much less than the two-level four-quadrant converter. Compared with the traditional vector control (VC) system, the structure of this control system is simple and this system is easy to be realized, the quickness and the robustness is greatly improved.