نتایج جستجو برای: machine winding
تعداد نتایج: 268489 فیلتر نتایج به سال:
This paper presents design procedures of a transverse flux linear motor (TFLM). The minimum and maximum flux linkage was determined by the simplified equivalent magnetic circuit and estimated average magnetic flux density at the air gap region by considering the shape of applied magnetomotive force (MMF). With this information, the number of turns of each phase winding was calculated based on t...
scheme proposed here makes the individual inverter A space vector PWM technique is developed based switching frequency equal to half of the motor phase on the combination of space vectors from dual inverters switching frequency. %is results in low inverter switching feeding the induction motor from both ends (open-end with reduced power circuit complexity when compared to winding without neutra...
In order to accurately recognize the stator winding inter-turn short circuit fault of induction motors, a novel method for fault diagnosis was proposed based on a bare-bones particle swarm optimization algorithm (BBPSO) and support vector machine (SVM); and feasible diagnostic steps were also introduced. In this method, the feature vector of induction motor in different conditions was extracted...
Bi-tooth flux-switching permanent magnet (FSPM) machine is an interesting brushless machine having magnets and excitation windings in the stator, which exhibits larger back EMF and requires only half the number and volume of PMs compared to conventional FSPM machine. However, air gap magnetic field is difficult to be regulated due to PM excitation alone. In this paper, by introducing an additio...
A conventional feedback control design may result in unsatisfactory performances in the event of malfunctions in actuators, sensors or other components of the system. This paper deals with the analysis and the design of the fault-tolerant control (FTC) in case of actuators and sensors faults. A classification of the FTC methods is proposed and according to the severity of faults affecting the s...
A transient model for an induction machine with stator winding turn faults is derived using reference frame transformation theory. A state-space representation of the dynamic equations, suitable for digital simulation is provided. Steady-state equivalent circuits are derived, from which the sequence components of the line currents can be estimated as a function of fault severity. Experimental r...
The developed subdomain model accounting for tooth-tips can accurately predict the open-circuit, armature reaction and on-load field distributions in surface-mounted permanent magnet machines. Based on this field model, their electromagnetic performance of the machine, such as the cogging torque, back-EMF and electromagnetic torque, and winding inductances are calculated. The model can also be ...
An autonomous induction generator (IG) with an asymmetric configuration, in which both the stator and the rotor are single-phase, is often formed when a triple-phase wound rotor loses connection to a winding component while running. The machine still works and is shown to be capable of generating modulated waveforms. Equations can help as an IG design guideline. The first harmonics of the mutua...
General closed-form analytical expressions for airgap inductance of surface-mounted PM and induction machines are derived without the assumption of sinusoidally wound windings. The expressions are suitable for all singleor doublelayer, concentrated or distributed windings, and demonstrated to be identical with the winding function approach and share the same advantage that all the harmonics are...
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