Power Indexes of Induction Motors and Electromagnetic Efficiency: their Windings

BukŠnaitis, J.
May 2010
Electronics & Electrical Engineering;2010, Issue 100, p11
Academic Journal
In the paper the standard dimensioned 1,5 kW three-phase induction motor with single-layer former winding and the same motor with stator winding replaced with sinusoidal winding was analyzed. Electromagnetic features of stator windings of the considered motors were evaluated on the base of harmonic analysis of rotating magnetomotive forces created by them and by calculating electromagnetic efficiency factors on the base of the analysis results. It was determined that the electromagnetic efficiency factor of the single-layer former three-phase winding kef1 = 0,9139, and for sinusoidal three-phase winding kef2 = 0,9335, i. e. by 2,14 % higher than the factor of the first winding. All power indexes of standard dimensioned induction motor with single-layer winding and of motor with stator winding replaced with sinusoidal three-phase winding were calculated after completing no-load and load tests of the motor and by applying the segregated-losses method. It was found that the phase current of the induction motor with stator winding replaced with sinusoidal three phase winding under indicated load decreased by 6,9 % , power taken from electric grid decreased by 5,0 %, power losses decreased by 11,7 %, efficiency factor increased by 2,4 % and power factor increased by 3,4 % compare to the respective power indexes of the standard dimensioned induction motor under the same load. It was determined that induction motor with three-phase winding of higher electromagnetic efficiency factor also has better power indexes.


Related Articles

  • Efficient 2.45 GHz Rectenna Design with high Harmonic Rejection for Wireless Power Transmission. Harouni, Zied; Osman, Lotfi; Gharsallah, Ali // International Journal of Computer Science Issues (IJCSI);Sep2010, Vol. 7 Issue 5, p424 

    The purpose of this work is to propose an efficient microstrip rectenna operating on ISM band with high harmonic rejection. The receiving antenna with proximity coupled feeding line implemented in a multilayer substrate. The rectenna with integrated circular sector antenna can eliminate the need...

  • Harmonic Analysis of Power Systems in Order to Network Conversion. Shariatinasab, R.; Akbari, M. // International Review on Modelling & Simulations;Dec2011, Vol. 4 Issue 6, p3125 

    Conversion of 3-phase single-circuit (3PSC) to 3-phase double-circuit (3PDC) and 6-phase single-circuit (6PSC) transmission line is a well known method to increase the power transfer capability of the network. The constraints using to decide on conversion type are usually network total loss and...

  • EVALUATION OF OCCUPATIONAL EXPOSURE TO ELF MAGNETIC FIELDS AT POWER PLANTS IN GREECE IN THE CONTEXT OF EUROPEAN DIRECTIVES. Christopoulou, Maria; Govari, Chrysa; Tsaprouni, Panagiota; Karabetsos, Efthymios // Radiation Protection Dosimetry;Dec2015, Vol. 167 Issue 4, p502 

    The scope of this paper is to comparatively present the extremely low-frequency (ELF) measurements performed at four power plants in Greece, focusing on: (a) the worst-case exposure conditions, (b) the existence of magnetic field harmonic components, (c) the technical similarities among the...

  • Smart Wireless Power Transfer Operated by Time-Modulated Arrays via a Two-Step Procedure. Masotti, Diego; Costanzo, Alessandra; Rizzoli, Vittorio // International Journal of Antennas & Propagation;8/4/2015, Vol. 2015, p1 

    The paper introduces a novel method for agile and precise wireless power transmission operated by a time-modulated array. The unique, almost real-time reconfiguration capability of these arrays is fully exploited by a two-step procedure: first, a two-element time-modulated subarray is used for...

  • Classification of Power Quality Disturbances Using Wavelet Packet Energy Entropy and LS-SVM. Ming Zhang; Kaicheng Li; Yisheng Hu // Energy & Power Engineering;Aug2010, Vol. 2 Issue 3, p154 

    The power quality (PQ) signals are traditionally analyzed in the time-domain by skilled engineers. However, PQ disturbances may not always be obvious in the original time-domain signal. Fourier analysis transforms signals into frequency domain, but has the disadvantage that time characteristics...

  • Wavelet Transform and Support Vector Machine Approach for Fault Location in Power Transmission Line. Malathi, V.; Marimuthu, N. S. // International Journal of Electrical & Electronics Engineering;Nov2010, Vol. 4 Issue 4, p272 

    This paper presents a wavelet transform and Support Vector Machine (SVM) based algorithm for estimating fault location on transmission lines. The Discrete wavelet transform (DWT) is used for data pre-processing and this data are used for training and testing SVM. Five types of mother wavelet are...

  • Static Test Study on Linear Induction Motor. Kumar, Chandan // International Journal of Computer & Electrical Engineering;Apr2013, Vol. 5 Issue 2, p251 

    Linear Induction Motors (LIMs) have got potential to replace the age old belt-pulley driven systems and the likes, which are in use for conversion of rotary to linear motion in most of the applications. In the present work a 3-phase Single sided longitudinal LIM (50Hz, 4 pole, 440V, 9KVA, and...

  • NIKOLA TESLA: THE GENIUS AND THE ALIENS. Steiger, Brad; Steiger, Sherry // Conspiracies & Secret Societies;2006, p440 

    An encyclopedia entry for "Nikola Tesla: The Genius and the Aliens" is presented. Genius Nikola Tesla is credited for bringing the world into the electrical age. At his laboratory, he would demonstrate the safety of alternating current by allowing electricity to flow through him and light the...

  • Variable Speed Vector Control for Induction Motor of Electric Vehicle. Emil Hasan, Amilia; Hassan, Haryani; Bugis, Ismadi // Applied Mechanics & Materials;2014, Vol. 699, p759 

    This paper presents the speed performance of an induction motor by using a vector control. The control scheme used is an indirect vector control for define speed command. The main focus of this research is to observe on the dynamic speed performance of the induction motor when the command speed...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics