Table 1: RMSFE for different flux estimation algorithms.

Integration algorithm RMSFE (in percentage of ref Flux) at 80% rated speed RMSFE at 20% speed 100% load 30% load 100% load Refrence stator flux Refrence stator flux Refrence stator flux   1.0 wb 0.8 wb 0.6 wb 1.0 wb 0.8 wb 0.6 wb 1.0 wb 0.8 wb Mod. low pass 1.02 1.24 1.77 1.03 1.2 1.62 0.83 0.9 low pass 1.25 1.44 2.0 1.24 1.41 1.80 1.37 1.5 Pure integrator 2.07 2.46 3.43 2.06 2.41 3.4 1.52 1.62