“…In many previous papers such as [6], [14], [15], the dynamic characteristics of i ds are neglected to simplify the stability analysis under the assumption that the d-axis current controller works well and that the output i ds satisfies i ds =0. However, in this paper, the dynamics of i ds are considered for a rigorous stability analysis, as well as the PD control term u f bq and the linearizing control term u f q .…”