This paper provides computer analysis and experiential investigation of the permanent magnet machines with neodymium ferrite magnets to discuss feasibility utilizing induction machines-oriented equipment for PM machine production. For this purpose, are obtained by replacing squirrel-cage rotor motor flux-focusing (tangential) surface-mounted (radial) rotors. Electromechanical parameters as elec...

Control methods for pulsation of torque reduction for the surface-mounted permanent magnet motors are discussed in the paper. The pulsation torque is a consequence of the non-sinusoidal flux distribution and due to interaction of the rotor’s permanent magnets with the changing stator reluctance. Proposed control method is estimator based. To assure parameter convergence Lyapunov’s direct method...

Permanent magnet (PM) machines with tooth coil windings are designed and analyzed. We study how the slot wedge material affects the behavior of PM losses when using tooth coil windings, which generate a significant air gap flux density harmonic content. The losses and cogging torques of a surface permanent magnet rotor and an interior permanent magnet rotor are compared in no-load and load situ...

To achieve the high-performance control of surface-mounted permanent magnet synchronous motor (SPMSM) speed system, this paper proposes a high-order sliding mode strategy based on new super twisting algorithm (NSTA). This introduces an adaptive term in its proportional original algorithm, which solves low reaching and poor antidisturbance ability due to square root calculation algorithm. The si...

Permanent magnet linear alternators are energy converting devices that have been under research and development for years. This type of alternators have advantages of high efficiency and no need of liner motion to rotation converting, when the driving force is in linear oscillation. Such applications can be found when ocean tide, solar power, and swing motions are used for generating electric p...