Direct torque control (DTC) is a control technique in AC drive systems to obtain high performance torque control. The classical DTC drive contains a pair of hysteresis comparators and suffers from variable switching frequency and high torque ripple. These problems can be solved by using space vector depending on the reference torque and flux. In this paper the space vector modulation technique ...

A novel modular-stator outer-rotor flux-switching permanent-magnet (MSOR-FSPM) motor is proposed and studied in this paper. Structure, operation and design principles of the MSOR-FSPM motor are introduced and analyzed. Considering that the combination of different pole number and slot number has a great influence on the motor performance, the optimum rotor pole number for the 12-stator-slot MSO...

Permanent magnet (PM) motors are rapidly replacing the squirrel cage induction for its energy efficient operation, smooth control and high power density. Although PM Motors efficient, they inherently affected by cogging torque ripple. Magnetic alignment between teeth of stator permanent rotors produce torque. Torque ripple is a dynamic oscillation during steady-steady operation which leads to v...

Switched reluctance machines (SRMs) are potential candidates for use in the propulsion systems of electric vehicles. However, they suffer from low power density and high torque ripple. In this paper, a segmented rotor double-sided axial flux SRM (DSAFSRM) is chosen detailed analysis. A hybrid design algorithm proposed to take effects iron non-linearity into account. The procedure benefits simpl...

Terminal Restriction Fragment (TRF) pattern analysis has become a widely used and informative tool for studying microbial communities. Variation between sequence-determined or true TRF length and observed TRF length (TRF drift) has been previously reported and can significantly affect identification of bacterial species using TRF lengths predicted from sequence databases. In this study TRF drif...

Ripples in the confining field may exert a torque on a rotating plasma. Time reversal symmetry implies that this torque should vanish for an ideal plasma. However, even in an apparently ideal plasma, singularities can give rise to a nonzero torque. This torque is evaluated for a simple configuration. Although the primary force is magnetic, an essential contribution arises from other nonlinear t...

The control of (PMSM) is the subject this study and torque ripple reduction in main goal work. Torque flux are controlled using a predictive model Vector Control. Because it commonly employed regulating electric motors. Space vector two approaches used study. Predictive was determined to be more effective terms response action after Matlab simulation approaches. MPC covers all potential switchi...

<span lang="EN-US">The induction motor is extremely well known and used as an alternating current (AC) machine. Therefore, torque speed regulations are very essential for this type of This paper presents direct control (DTC) based on motors (IM). The mathematical model IM reported, the machine modeled in a synchronous coordinate farm. Classic DTC applied to with two bandwidths hysteresis ...