This paper presents a generalized d-q model of nphase induction motor drive. Multi -phase (n-phase) induction motor (more than three phases) drives possess several advantages over conventional three-phase drives, such as reduced current/phase without increasing voltage/phase, lower torque pulsation, higher torque density, fault tolerance, stability, high efficiency and lower current ripple. Whe...

Although the permanent magnet linear synchronous motor has been used in industry gradually, it has some drawbacks to restrict the using region. In order to overcome the disadvantages, the advanced control strategies were adopted to improve the performance of PMLSM. In the paper, the field oriented control and direct torque control strategies were researched, their control model was established ...

This paper presents a modeling and analysis of multi-phase inverter fed multi-phase induction motor drive with different number of phases. Multiphase induction motor drives possess several advantages over conventional three-phase drives such as lower torque pulsation, fault tolerance, stability, high efficiency and lower current ripple and reduced current per phase without increasing voltage pe...

purpose: to study the pattern of perfusion of central retinal artery (cra) after 0.1 ml intravitreal injection of bevacizumab to verify the need for any maneuver to decrease the intraocular pressure (iop) including anterior chamber paracentesis (acp) methods: this is a prospective, interventional, noncomparative case series. patients receiving intravitreal injection of bevacizumab for choroidal...

This study presents a bridge arm attached to the FESS motor’s neutral point and reconstructs mathematical model after phase-loss fault assure safe dependable functioning of motor such fault. To increase tolerance in motors with faults, 3D-SVPWM technology was utilized operate motor. The parameters zero-axis current compensation control were modified based on dual-closed-loop strategy for speed ...

In the traditional deadbeat-direct torque and flux control in M-T reference frame (DB-DTFC-MT) scheme, stator is calculated with current model, one-step delay digital system neglected, which results poor robustness to parameter variations a serious oscillation both torque, especially low-speed range. this article, implementation of DB-DTFC-MT studied. First, scheme considering deduced. Second, ...

To improve the quality of starting torque and suspension force, a composite cage rotor bearingless induction motor (CCR-BIM) is designed, which adopts structure that combines an inner outer rotor. First, overall CCR-BIM specially designed analyzed for principle, mathematical model force deduced. Second, initial structural parameters are determined, qualities, such as quality, compared between p...

Cyclic vibratory torque requirement of a Reciprocating Compressor sets in torsional vibrations in compressor motor system. Explanation of development of pulsating currents, due to vibratory motion of motor rotor is given. The pulsating currents are superimposed on steady state currents. Mathematical mod~ls for analysing torsional vibrations of the system and nett motor current due to combinatio...

The synchronous reluctance motor (SynRM) has many advantages over other ac motors. For example, its structure is simple and rugged. In addition, its rotor does not have any winding or magnetic material. Prior to twenty years ago, the SynRM was regarded as inferior to other types of ac motors due to its lower average torque and larger torque pulsation. Recently, many researchers have proposed se...