نتایج جستجو برای: machine winding
تعداد نتایج: 268489 فیلتر نتایج به سال:
Effect of Stator Winding Faults on Performance Characteristics of Three Phase Induction Motor (TPIM)
To carry out the induction machine analysis under dynamic, transient and steady state conditions, the analytical techniques are used to simulate the TPIM. Here, the Park’s transformation is used to transform balanced 3-Φ currents ia,ib, and ic to balanced 2-Φ currents iα, and iβ to accurately model the TPIM. In this paper, an accurate mathematical model is developed for induction motor and the ...
The strong correlation between the level of eddy current losses and the winding geometry shows all the necessity of special attention to the manner of disposition of coils in machine slots and to the wire type whether it’s solid or stranded conductor. Since the transposition of winding strands is a recommended solution to reduce eddy current losses, this article suggests an electromagnetic anal...
An accurate and simpler approach for modelling and simulating the dynamic behavior of squirrel cage induction machines is presented here. The model is based on multiple coupled circuits and takes into account the geometry and winding layout of the machine. All inductances are derived by means of the winding function approach (WFA) and are integrated with the decomposition into their Fourier ser...
Self reactanceXd in direct axis ’d’ and self reactanceXq in quadrature axis ’q’ influence the load characteristics of the permanent magnet machine. Their calculation methods are known. All calculations should be verified by measurements. Measurement with AC variable voltage and frequency source applied on stator winding is correct when eddy currents do not exist. Other methods evaluate the DC c...
A 2D finite element electromagnetic model that permits the simulation of a cage induction machine, involving the effects of eddy currents and coupling the field equation with the stator fieldcircuit equation, has been presented in this paper. Transformation matrix has been derived to incorporate specialized stator winding scheme called the bridge configured winding (BCW) in the coupled field ci...
A procedure has been established for obtaining equivalent circuit parameters for the Brushless Doubly Fed Machine (BDFM), also known as the Brushless Doubly Fed Induction Machine (DFIM), by transforming a reduced coupled-circuit model into a sequence component form. This approach takes advantage of the model reduction procedure’s ability to reduce a complex rotor structure to a single equivalen...
In this paper, a brushless wound rotor vernier machine (Bl-WRVM) with single inverter configuration is proposed to achieve the operation. topology, connected series-connected ABC and XYZ windings through which current flow produces magnetomotive force fundamental sub-harmonic components, respectively. The have similar pole pairs excitation windings, whereas its number of poles different from wi...
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