Balanceo Dinamico de Rotor motor electrico hp con ventiladores. To carry out the rolling, the rotor shaft is placed on rails as shown in Figure 1a. The disc is rotated and left to stop on its own. It is marked on the disc with chalk at . Introducción 2. ¿Qué es el desbalanceo? 3. Cantidad de desbalanceo 4. Tipos de balanceo 5. Clasificación de los desbalanceos 6. Equilibrado de rotores.
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The relationship among the spectral harmonics of an electric current induction motor, and its mechanical and electromagnetic problems is well known.
Conclusions Based on previous works in the literature, where a relationship between the mechanical rotlres and the electric-current harmonics is reported, this article develops a more efficient method of balancing that takes into account the r.
Linand Thomas G.
Explore the Home Gift Guide. Neelam 7 presents an analysis of the electric current as the most popular for failure diagnosis, not only electrical but also mechanical as well, showing effectiveness to determine abnormal operation of induction motors, including situations involving gear trains. The experimental work conducted to validate this proposed method was based on an electric motor described in Table 1. At the end, it brings out the optimal solution of the parameters, and the desired balance mass.
Don’t have a Kindle? Kral et al 6 proposes a technique to estimate unbalance using harmonics that are present in the electric power, showing positive results in assessing static and dynamic unbalance.
The other difficulty is nonlinearity behavior of data due to an offset. These harmonics depend on the rotor slip, input frequency, and they occur at the frequencies given by the following expressions:. In this case, the 4-pole induction motor runs at 60Hz.
This algorithm was verified by running several study cases, with the same order of precision of the traditional balance method that uses vibration data. Substituting in the trigonometric identity that the sum of the squares is equal to one, one gets:. Alfonso,Lorandi M. These harmonics are due to different effects, mechanical and electrical, as has been reported for some time 58.
Based on previous works in the literature, where a relationship between the mechanical unbalance and the electric-current harmonics is reported, this article develops a more efficient rotorss of balancing that takes into account the r. Harmonics of electric signals.
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Of particular interest is the harmonic signal related to mechanical unbalance. This is a compatibility condition for harmonics related with L 1L 2.
Get to Know Us. An improvement of a single-plane balancing method via residual current of a rotor directly coupled to an induction motor.
The signal readings, which are scalar quantities that reflect residual complex values offset with magnitude and phase when there is no imbalance, produce a nonlinear behavior of the data with respect to the unbalanced forces.
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The magnitudes of the signal spectrum do not have a linear homogeneous relationship with the unbalance force due to a complex offset that can be measured with the balanced rotor, and that adds to the unbalance effects.
The measurement consists of a virtual instrument, a set of solid-state magnetic sensors and its signal conditioning. Given the unbalance and resultant angles according to the iterationsand the trial mass, the magnitudes of the unbalance mass and the resultant may be solved as follows:.
Bellini 8 presents a paper review of the previous ten years showing a list of references and research activity classified in four topics: Figure 2 shows the three harmonic components in a polar diagram.
The virtual instrument developed in this work offers a low cost and a user-friendly interface, and thus a remarkable potential for industrial applications.
These harmonics depend on the rotor slip, input frequency, and they occur at the frequencies given by the following expressions: The test cases show the first balancing exercise where the estimated balance masses have relatively small errors similar to the ones obtained in traditional practice.
Balanceo en un plano 6. As is well known in rotor balancing, vibration data is subject to random errors which make the first balancing exercise not precise enough in terms of fulfilling the vibration standards for the particular rotor in turn.
Finley et al 5 makes a complete analysis of the relation among electric harmonics and mechanical problems including misalignment, unbalance, bearings failure, fractured rotor bars, etc.
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However, when unbalance ispresent these relative phase angles change due to the vector sum of the offset and the unbalance effect. Introduction The relationship among the spectral harmonics of an electric current induction motor, and its mechanical and electromagnetic problems is well known. In the end, one dotores a solution for the minimum sum of squares of the perturbations. Amazon Second Chance Pass it on, trade it in, give it a second life.
Withoutabox Submit to Film Festivals. Measurements of residual- current signals A residual current is considered as the remaining harmonics after subtracting the fundamental current circulating in a motor wiring.