The Vector Analysis of the Traction Motor’s Rotor Flux in EMU

Aiming to rotor flux EMU traction motor vector control and it is hard to measure directly traction motor’s flux, this paper presents a rotor’s flux model based on traction motor voltage, current and speed. The results of test show that the algorithm can accurately get the rotor flux linkage and satisfy the demands of the vector control in the emu traction system and has good robustness.