نتایج جستجو برای: turn stator winding fault
تعداد نتایج: 195152 فیلتر نتایج به سال:
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...
The sidebands around stator currents harmonics as a potential tool for supporting the diagnosis of rotor faults in induction motors are analyzed in this paper. The presence of broken bars introduces high frequency components in the machine currents spectrum in addition to the characteristic sidebands around the fundamental component. These additional components are due to the interaction betwee...
The squirrel-cage Induction motors (SCIMs) are approximately 80% of the overall electricity use in industrialized countries. In the agricultural and commercial sectors also, power consumption by high power SCIMs are quite substantial. On an average, the energy consumed by a motor during its life cycle is 40-80 times the initial cost of the motors. Therefore efficiency and power factor (PF) of t...
This article describes a practical method for predicting the distribution of electric potential inside an electrical machine’s winding based on design data. It broadens understanding impedance in terms inter-winding behavior and allows to properly insulation system during development phase. The predictions are made frequency-dependent equivalent circuit machine which is validated by measurement...
The squirrel-cage Induction motors (SCIMs) are approximately 80% of the overall electricity use in industrialized countries. In the agricultural and commercial sectors also, power consumption by high power SCIMs are quite substantial. On an average, the energy consumed by a motor during its life cycle is 40-80 times the initial cost of the motors. Therefore efficiency and power factor (PF) of t...
Inter-turn fault (ITF), a typical motor fault, results in significant variations the thermal characteristics of motor. For temperature rise (TR) experiments and field-stress field simulations an induction are carried out to reveal related ITF. First, based on actual structure cooling type motor, whole-domain simulation model was established. The reasonable equivalence calculation heat transfer ...
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