Investigation on the variation of iron loss of permanent magnet synchronous traction motor under different load toque

The operation Characteristics of the permanent magnet synchronous traction motor is mostly affected by the iron loss. In this paper, the PM flux linkage ψ_f, d-axis armature inductance L_ad and q-axis armature inductance L_aq was adopted to investigate the variation of iron loss under different load torque. It founded that increasing ψ_f, decreasing the γ or L_ad, the iron loss increase smaller compared to the no load condition.