Investigation of voltage and frequency variation on induction motor core and copper losses

2017 ◽  
Author(s):  
Mutasim Nour ◽  
Prabhu Thirugnanam
Keyword(s):  
Induction Motor ◽  
Frequency Variation ◽  
Copper Losses

scholarly journals Precise Assessment of Performance of Induction Motor under Supply Imbalance Through Impedance Unbalance Factor

2013 ◽  
Vol 64 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Shashi Bhushan Singh ◽  
Asheesh Kumar Singh
Keyword(s):  
Steady State ◽  
Performance Assessment ◽  
Induction Motor ◽  
Supply Voltage ◽  
High Sensitivity ◽  
Positive Sequence ◽  
Voltage Unbalance ◽  
Precise Assessment ◽  
Copper Losses ◽  
Steady State Performance

This paper presents precise assessment of steady-state performance of induction motor (IM) operating under voltage unbalance. The variation of two voltage unbalance factors viz. complex voltage unbalance factor (CVUF) and impedance unbalance factor (IUF) with positive sequence voltage component, reveals that degree and manner of unbalance in supply voltage is exactly reflected in CVUF and IUF, respectively. On this basis, it is shown that for the precise assessment of IM performance, knowledge of both, manner (IUF) and degree (CVUF) of unbalance is important. Further, effect of angle of unbalance, on the performance of the IM and voltage pattern is analyzed. Results depict high sensitivity of derating factor and peak copper losses to this angle. Thus, it should be included along with unbalance factors for the precise and complete performance assessment of IM.

The Performance of a Three-Phase Induction Motor under and over Unbalance Voltage

2021 ◽  
Vol 28 (2) ◽  
pp. 15-32
Author(s):  
Abdulsatar Jassim ◽  
Arkan Hussein ◽  
Laith Abbas
Keyword(s):  
Induction Motor ◽  
Voltage Unbalance ◽  
Three Phase ◽  
Positive Voltage ◽  
Unbalance Voltage ◽  
Component Approach ◽  
Source Voltage ◽  
Copper Losses ◽  
Stable Voltage

Voltage unbalance is an adverse global phenomenon impacting three-phase induction motor output. Three-phase source voltage may become imbalanced in a variety of respects, while a balanced system preserves stable voltage magnitude and angles in three phases, but a completely balanced state is difficult to get. Imbalanced cases may differ in multiple ranges which may practically affect the motor. So, this work is an effort to analyze the operations with appropriate propositions. The output of a three-phase induction motor working with an imbalanced supply grid, MATLAB/SIMULINK is further used for simulation purposes and programming based on the asymmetrical component approach is adopted. A new design for system rerating is being proposed. As a case study, a 10 HP three-phase induction motor was used. The findings of the study show that to determine the output of the induction motor, positive voltage series must be respected under the voltage unbalance factor (VUF) or proportion voltage unbalance index with six various voltage magnitude imbalance conditions, the copper losses of three-phase induction motors were calculated under full load conditions by simulation. So, the qualified percentage change in total copper losses for the motor operating under imbalanced and balanced voltages was determined.

Nonlinear Control of the Doubly Fed Induction Motor with Copper Losses Minimization for Electrical Vehicle

2008 ◽  
Author(s):  
S. Drid ◽  
M.-S. Nait-Said ◽  
M. Tadjine ◽  
A. Makouf ◽  
Hichem Arioui ◽  
...  
Keyword(s):  
Nonlinear Control ◽  
Induction Motor ◽  
Electrical Vehicle ◽  
Doubly Fed ◽  
Copper Losses

Estimation of Losses on 3Φ Nano Coated Induction Motor

2014 ◽  
Vol 666 ◽  
pp. 213-217 ◽  
Author(s):  
D. Edison Selvaraj ◽  
R. Vijayraj ◽  
M. Raj Kumar ◽  
G. Dhivya ◽  
C. Pugazhendhi Sugumaran ◽  
...  
Keyword(s):  
Induction Motor ◽  
Power Factor ◽  
Mechanical Power ◽  
Nano Technology ◽  
Significant Growth ◽  
Iron Losses ◽  
Nano Coating ◽  
Three Phase ◽  
Different Types ◽  
Copper Losses

In this recent decades, there was a significant growth in the applications of nano technology in the field of electrical and electronics engineering. In this research paper, the estimation of the different types of losses on a normal and nano coated three phase induction motor was done and hence the results were compared with each other. From these researches, it found that the mechanical losses were reduced by 33.33% in the motor after nano coating whereas stator iron losses were reduced by 13.8%. Stator losses were reduced up to 16.7% by coating the windings of the motor with the enamel filled with nano fillers of SiO2 and Al2O3 whereas rotor copper losses were high in the nano coated motor. The output mechanical power developed by the normal motor was increased by 39% with the application of the nano fillers to the enamel used for the coatings of the windings of the motor whereas the gross rotor torque was improved by 42%. The power factor of the motor was also improved by nano coating by 15.5%.

scholarly journals Induction motor speed control in a DSP-based low-THD multi-level converter

Respuestas ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 159-167
Author(s):  
Edison Andrés Caicedo ◽  
Henry Alfonso Sepúlveda-Pacagui ◽  
Luis David Pabón-Fernández ◽  
Aldo Pardo-García ◽  
Jorge Luis Díaz-Rodríguez
Keyword(s):  
Induction Motor ◽  
Speed Control ◽  
Control Technique ◽  
Frequency Variation ◽  
Motor Speed ◽  
Multilevel Converter ◽  
Scalar Control ◽  
Operating Limits ◽  
Multi Level ◽  
Level Converter

This paper presents the development of an algorithm for speed control for the induction motor using the TMS320F28069M microcontroller, the algorithms were performed based on the operating limits of the scalar control technique and the characteristics of the DSP. The control technique together with the optimization algorithm used will provide the modulations with optimization of the harmonic content, based on the method of frequency variation adopting a multi-level converter, which receives the control signals from the device's GPIOs acting as the final element control loop proposed. The adopted multilevel converter converts the voltage coming from the DC BUS to a quasi-sinusoidal AC voltage thanks to the steps outlined above, providing the power supply to the induction motor that intrinsically carries the scalar control technique.

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