Abstract: A novel modular arc-linear flux-switching permanent-magnet motor (MAL-FSPM) used for scanning system instead of reduction gearboxes and kinematic mechanisms is proposed and researched in this paper by the finite element method (FEM). The MAL-FSPM combines characteristics of flux-switching permanent-magnet motor and linear motor and can realize the direct driving and limited angular mo...

Recently, the dual-permanent-magnet-excited (DPME) machine has attracted growing attention due to its high torque density. Due bidirectional field modulated effect (BFME), airgap flux density harmonics (AFDHs) are more complex and abundant than traditional permanent magnet synchronous machines (PMSMs). Moreover, back-electromotive force (EMF) generated by AFDHs is also complex. Unfortunately, o...

With the increasing use of electric propulsion ships, emergence shaftless rim-driven thruster (RDT) as a revolutionary integrated motor is gradually becoming an important development direction for green ships. The structure RDTs leads to their dependence on position sensorless control techniques. In this study, novel algorithm using composite sliding mode observer (SMO) with modified feed-forwa...

Axial-flux permanent magnet (AFPM) machines are gaining popularity in low-speed and high torque applications due to their density, efficiency, compact structure. In this article, a dual-rotor slotless AFPM (DRSAFPM) machine equipped with equidirectional toroidal winding (EDTW) is proposed compared that conventional single-layer double-layer concentrated windings (CWs). First, the differences be...

This paper presents a novel means of sensorless drive the winding segmented permanent magnet linear motor (WS-PMLM). In order to solve problem deviation position and speed estimation mover caused by sharp changes inductance, flux linkage, back electromotive force (EMF) between segments WS-PMLM, method for compound back-EMF is proposed eliminate blind spot intersegment estimation. terms estimati...

The primary aim of this study was to develop and validate an accurate sub-domain analytical model estimate the magnetic field electric machines with high-temperature superconducting (HTS) excitation armature windings. developed by utilizing separation variable harmonic analysis methods solve Laplace’s or Poisson’s equations vector potential in two-dimensional polar coordinates. theoretical deri...