Table 2: THD of stator current at different loadings.

Integration algorithmTotal harmonic distortion (in percentage)
100% load30% load
Refrence stator fluxRefrence stator flux
1.0 wb0.8 wb0.6 wb1.0 wb0.8 wb0.6 wb

Mod. low pass8.35.83.38.99.57.3
low pass 11.48.25.112.111.89.2
Pure integrator13.812.48.214.514.712.2