i like sharing, but it is not as easy as seems. there are millions of PDF files out there. you must find them all to make useful website. and i surely did it. try now to find and download any PDF file you ever knew and you can find that file on my website.
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.
|Published (Last):||24 January 2013|
|PDF File Size:||7.83 Mb|
|ePub File Size:||17.38 Mb|
|Price:||Free* [*Free Regsitration Required]|
An efficient method for single-plane rotor balancing which requires some components of the electric signal spectrum from each phase of the electric motor to which it is directly coupled is developed. Alfonso,Lorandi M. In order to obtain the absolute phase angles, the algorithm uses the balancei phase angles among vectors P 0L1P 0L2 baalanceo, P 0L3 obtained by measurement.
These harmonics are due to different effects, mechanical and electrical, as has been reported for some time 58. Write a customer review. This requires an algorithm to determine, based on readings of residual values for the balanced condition, and the imbalanced rotor, the complex values that directly relate to the imbalance. Advances in Diagnostic Techniques for Induction Machines.
To illustrate this procedure, the following exercise is conducted for one test case. If you are a seller for this product, would you like to suggest updates through seller support? The other difficulty is nonlinearity behavior of data due to an offset.
Once the harmonics are known, it then calculates the influence coefficients and the balance masses. Learn more about Amazon Giveaway. It has been reported the phase relation among high order harmonics near 90Hz which tend toz ero with some variations that depends on the degree of rotor unbalance.
Amazon Inspire Digital Educational Resources. Measurements of residual- current signals A residual current is considered as the remaining harmonics after subtracting the dotores current circulating in a motor wiring. Of particular interest is the harmonic signal related to mechanical unbalance.
Dorrel et al 1 studied how dina,ico magnitude of electric harmonics relates to the mechanical harmonics in motors focusing on eccentricity. Harmonics of electric signals.
When direct measurements are included, vectors may look like shown in Figure 4 and their equations are:. Calidad del balanceo 9.
Amazon Advertising Find, attract, and engage customers. Depending on harmonic order, there is an associated mechanical or electromagnetic problem.
The measurement consists of a virtual instrument, a set of solid-state magnetic sensors dinamoco its signal conditioning. By means dinamco the sensing system, the fundamental current consumed by the motor, and the harmonics produced by the mechanical and the electromagnetic problems are obtained. This is performed in a similar way as the previous step. Recorded data using the virtual instrument described above are shown in Tables 2 and 3.
An improvement of a single-plane balancing method via residual current of a rotor directly coupled to an induction motor. Don’t have a Kindle? Instrumentation The measurement system has the following elements: Tipos de balanceo 5.
It then calculates the harmonics R 01R 02R 03 related to the resultant unbalance.
This balancing technique faces two problems; one is data variations of samples which are solved by taking three to five minute samplings, and calculating the r. Similarly, equations 18 rotres 21 are worked out to satisfy themselves by perturbing the harmonics to finally obtain 24 and References  Dorrell D. Algorithm description The dinammico procedure consists of the following steps: Circle after data perturbations. Applications Several tests were conducted using an induction motor described in Table 1.
They use additive models to separate the effects of different factors on the amplitude of the fault signatures. Figure 1 shows the frequency spectrum with a harmonic component that is related to rotor imbalance rottores is obtained from the filtering process, as established by Riley 2.
The signal errors that are present in the readings, more pronounced in these Hall-type sensors, are decreased by means of a system of equations of perturbations and compatibility relations that are applied to these data.
Amazon Music Stream millions of songs.