This paper presents a simplified fuzzy logic-based speed control scheme of an interior permanent magnet synchronous motor (IPMSM) above the base speed using a flux-weakening method. In this work, nonlinear expressions of d-axis and q-axis currents of the IPMSM have been derived and subsequently incorporated in the control algorithm for the practical purpose in order to implement fuzzy-based flu...

In this paper a new optimization function for increasing the flux weakening range and output torque value of segmented interior permanent magnet synchronous motor (SIPMSM) is presented. In proposed objective function normalized characteristic current and saliency ratio are considered as two optimization variables during optimization process. The focus of this paper is rotor structure design suc...

Series-winding three-phase PMSMs have a higher bus voltage utilization than the conventional with star connection. This topology is suitable for applications limited voltage. However, zero-sequence current controller will reduce of series-winding PMSMs, which causes problems in flux-weakening design. The control algorithms cause to enter overmodulation region early and degrade performance suppr...