Recently, many optimal designs for axial flux permanent magnet (AFPM) motors were performed based on finiteelement (FE) analysis. Most of the models are based on reduction of 3D problem to 2D problem which is not accurate for design aspects. This paper describes an accurate electromagnetic analysis of a surface mounted, 28 pole AFPM with concentrated stator winding. The AFPM is modeled with thr...

In this study, design, implementation, and power performance analyses of a micro wind turbine (MWT) system are presented. An original permanent magnet synchronous generator (PMSG) that reduced cogging torque was employed as a generator in the MWT. A novel blade form offering better performance at low wind speeds was also utilized for the MWT blades. Power performance analyses of the MWT were ca...

In this paper, a robust adaptive nonlinear dynamic controller is designed to achieve practical stabilization for position tracking error of a voltage-fed permanentmagnet stepper motor. The control design is an outputfeedback design that utilizes only rotor position and velocity measurements. Currents are not available for feedback. Adaptations are utilized so that no knowledge of motor paramete...

Abstract With the implementation of “dual carbon policy”, traditional injection molding machine transmission system pays more and attention to improving energy efficiency for drive motor, PM motor has obvious advantages in because its high high-power density. A permanent magnet servo (PMSM) an with a rated power 7 kW is designed based on theory PMSM this paper. The 2D finite element analysis (F...

In this study, the effects of ratio a motor’s axial length to its pole pitch on efficiency, magnetic flux density distribution, torque, torque/weight, and motor volume were investigated in an outer-rotor (hub) brushless direct current motor. The weight electrical machine affects output power, efficiency it is advantageous design electric at appropriate power high with volume. Therefore, aim stu...

Analytical prediction of cogging torque needs accurate flux density and relative permeance closed-form expressions. The two-dimensional (2D) air gap distribution function the 2D are currently almost always applied to surface-mounted permanent magnet (SPM) machines, instead interior (IPM) due complications from IPMs severe magnetic saturation leakage flux. To address these issues, this paper pro...

This paper focuses on the state-periodic adaptive compensation of cogging and Coulomb friction for permanent magnet linear motors (PMLM) executing a task repeatedly. The cogging force is considered as a position dependent disturbance and the considered Coulomb friction is non-Lipschitz at zero velocity. The key idea of our disturbance compensation method is to use one trajectory-period past inf...