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Nomenclatura Unesco > (33) Ciencias Tecnológicas > (3306) Ingeniería y tecnología eléctricas > (3306.03) Motores eléctricos

Mostrando recursos 1 - 20 de 1,331

1. Análisis vibrodinámico de motores eléctricos // Vibrational and dynamic analysis of electric motors - Orestes González-Quintero; Carlos Ramón Batista-Rodríguez

Resumen

El artículo aborda el estudio vibrodinámico ejecutado en motores eléctricos de la fábrica de azúcar

“Cristino Naranjo” durante la implementación del mantenimiento predictivo. En el mismo se

exponen los trabajos realizados en las diferentes etapas de implementación del mantenimiento y el

diagnóstico de defectos mediante la utilización del análisis espectral de vibraciones. Se muestran

espectros de motor con problemas y en funcionamiento normal.

Palabras claves:

 

Ingeniería de Mantenimiento, Mantenimiento Predictivo,...

2. ACERCA DEL DIAGNÓSTICO VIBROELÉCTRICO DE LOS MOTORES DE INDUCCIÓN: Experiencias del CEIM – CUJAE - Evelio Palomino Marín
Existen sobradas razones para afirmar que el análisis de vibraciones constituye una tecnología de probada eficacia
para el diagnóstico de maquinarias y estructuras. Sin embargo, en el caso de los motores de inducción, la
experiencia ha demostrado que la intensidad de corriente de alimentación en este tipo de máquina, sufre distorsiones
significativas en virtud de los problemas de naturaleza tanto mecánica como eléctrica que pueda confrontar el motor.
De aquí que sea menester incorporar de manera integrada el análisis de vibraciones y el análisis espectral de
intensidad de corriente para llegar a conclusiones sustentables en relación con el estado técnico...

3. Evaluación energética de motores de inducción a través del modelo de motor agregado; Energy evaluation of induction motors through aggregate motor model - Ignacio Romero Rueda; Miriam Vilaragut Llanes; Bárbara M Pérez Mena; Oscar M Peña Guilarte

Este trabajo armoniza los datos nominales del motor agregado, mediciones de tensión y corriente en el suministro eléctrico al grupo de motores asincrónicos y el método del momento en el entrehierro para determinar el estado de carga, la eficiencia y demás magnitudes que caracterizan energéticamente al grupo de motores a través del equivalente. Se define el factor de incidencia como la relación entre la potencia demandada por el motor agregado y la demanda total. Los motores seleccionados tienen coeficientes de incidencias iguales o mayores que el coeficiente de
incidencia medio del conjunto de agregados, garantizando que predominen los de mayor...

4. Efecto de los armónicos en los motores monofásicos asincrónicos con capacitor de marcha. Harmonic effects on permanent -capacitor single- phase induction motors - Percy Rafael Viego Felipe; Julio Rafael Gómez Sarduy; Marcos Alberto de Armas Teyra; Vladimir Sousa Santos

Las ondas de tensión apreciablemente distorsionadas, tienen un impacto negativo en el comportamiento de los motores monofásicos asincrónicos de jaula de ardilla. Se deterioran sus indicadores energéticos, se incrementan las vibraciones y el ruido y se reduce la vida útil. Se estudia el comportamiento en estado estable de un motor con capacitor permanente, extensible a uno de dos capacitores. Se analiza un ejemplo experimental de aplicación tomado de la literatura. En él se evidencia un incremento de las pérdidas, empeoramiento del factor de potencia, aumento de los momentos pulsantes y otros elementos negativos cuando circulan corrientes no sinusoidales. Un estudio...

5. New fault-tolerant control architectures based on voting algorithms for electric vehicle induction motor drive - Raisemche, A.; Boukhnifer, M.; Diallo, D.
International audience

6. Central fatigue induced by short-lasting finger tapping and isometric tasks: a study of silent periods evoked at spinal and supraspinal levels - Arias, Pablo; Robles García, Verónica; Corral Bergantiños, Yoanna; Madrid, Andy; Espinosa, Nelson; Valls-Solé, Josep; Grieve, Kenneth; Oliviero, Antonio; Cudeiro Mazaira, Francisco Javier
[Abstract] The neural substrates of fatigue induced by muscular activity have been addressed in depth in relation to isometric tasks. For these activities, when fatigue develops, it has been noted that the duration of the silent periods (SPs) increases in response to both transcranial magnetic stimulation (TMS) of primary motor cortex or electric cervicomedullary stimulation (CMS). However, fatigue is known to be task-dependent and the mechanisms giving rise to a decrease in motor performance during brief, fast repetitive tasks have been less studied. We hypothesized that fatigue induced by repetitive fast finger tapping may have physiological mechanisms different from those...

7. Aplicaciones del electromagnetismo en la medicina - Rodríguez Escobar, Wilken; Universidad Militar Nueva Granada; Universidad Javeriana; Naranjo Medina, Pedro Alfonso
El Magnetismo es un fenómeno producido por algunas sustancias naturales y de igual manera por corrientes eléctricas. Se puede producir por una partícula cargada en movimiento, como también por una corriente eléctrica que está sometidas a fuerzas en presencia de campos magnéticos. Este es el fundamento de la definición de la ley de Ampere del funcionamiento de un motor eléctrico y de un galvanómetro. El galvanómetro sólo mide corrientes pequeñas, pero puede adaptarse para medir corrientes y voltajes de cualquier valor. Las fuerzas sobre partículas cargadas móviles en un campo magnético se utilizan también para el espectrómetro de masas para...

8. DUAL INVERTER-FED DRIVES WITH THE SYNCHRONISED MULTILEVEL VOLTAGE WAVEFORMS - Oleschuk V.I.; Sizov A.S.; Stancovic A.M.; Yaroshenco E.M.
Abstract: This paper presents results of investigation of dual inverter-fed open-end winding induction motor electric drive systems, controlled in accordance with the algorithms of novel methodology of synchronized vector modulation. Simulations give the behavior of the proposed techniques of synchronized modulation.

9. Modeling the Inter-Electrode Capacitances of Si CoolMOS Transistors for Circuit Simulation of High Efficiency Power Systems - Yang, Nanying; Ortiz, Jose M.; Duong, Tam; Hefner, Allen; Meehan, Kathleen; Lai, Jih-Sheng
The CoolMOS™+ transistor is a power MOSFET type device that utilizes a “super-junction” embedded within its drift region in order to improve the trade-off between on-resistance and breakdown voltage. The super-junction results in unique inter-electrode capacitance characteristics that require an advanced modeling approach to accurately represent switching performance. This paper describes a new compact circuit simulator model for the CoolMOS™ transistor and demonstrates the model performance using the Saber† simulator for a 650 V, 60 A device. The model is suitable for implementation in the Saber simulator that accurately describes all three inter-electrode capacitances (i.e., gate-drain, gate-source, and drain-source capacitances)...

10. Mantenimiento predictivo de motores eléctricos industriales mediante análisis de corrientes - JAIMES CÁCERES, MARTÍN EDUARDO
El presente trabajo se desarrolla con el fin de aportar resultados prácticos al proceso de validación del análisis de las corrientes para que sirva como parte de las investigaciones que en la actualidad se están desarrollando acerca del análisis de las corrientes estatoricas de los motores de inducción de gran potencia, la aportación de nuevos datos sobre el análisis de las corrientes, nos permitirán seguir desarrollando y validando esta moderna técnica de diagnóstico en la detección de fallos. Los departamentos de mantenimiento tendrán al alcance una potente herramienta útil y valiosa, que les permita ver el estado real de sus...

11. Resource Efficiency Assessment—Comparing a Plug-In Hybrid with a Conventional Combustion Engine - Martin Henßler; Vanessa Bach; Markus Berger; Matthias Finkbeiner; Klaus Ruhland
The strong economic growth in recent years has led to an intensive use of natural resources, which causes environmental stress as well as restrictions on the availability of resources. Therefore, a more efficient use of resources is necessary as an important contribution to sustainable development. The ESSENZ method presented in this article comprehensively assesses a product’s resource efficiency by going beyond existing approaches and considering the pollution of the environment as well as the physical and socio-economic availability of resources. This paper contains a short description of the ESSENZ methodology as well as a case study of the Mercedes-Benz C-Class...

12. Electric vehicles’ influence on Smart Grids - Marta R. Jabłońska; Jerzy S. Zieliński
Aim of the paper is to demonstrate evolution of Electric Vehicles (EV) and their infl uence on the Smart Grid (SG). Starting from USA defi nition of the SG considering the fi fth- and sixth- properties of the SG: It accommodates all generation and storage options and it enables new products, services and markets. We can determine EV role in the SG operation. Contemporary we can distinguish following types of the EV: HEVS – hybrid electric vehicles with motor and use batteries with no using electricity from external source, Pure EVs – running on electric motor powered by batteries that...

13. Data Mining Approcah for Performance Analysis of Variable Speed Refrigeration System - Önder KIZILKAN; Ecir Uğur KÜÇÜKSİLLE; Ahmet KABUL
The aim of this study is to carry out performance modeling of an experimental refrigeration system driven by variable speed compressor using Data Mining techniques with small data sets. In order to vary the capacity of the refrigeration systems, one of the best methods is controlling the rotational speed of the compressor motor with a frequency inverter. For this aim, an experimental refrigeration system is setup with a frequency inverter for controlling the speed of compressor electric motor. The experiments are made for 35 Hz to 50 Hz electric motor frequencies. Data mining technique is applied to determine the system...

14. QFD-based conceptual design of an autonomous underwater robot - Thip Pasawang; Theerayuth Chatchanayuenyong; Worawat Sa-Ngiamvibool
Autonomous underwater robots in the past few years have been designed according to the individual concepts and experiences of the researchers. To design a robot, which meets all the requirements of potential users, is an advanced work. Hence, a systematic design method that could include users’ preferences and requirements is needed. This paper presents the quality function deployment (QFD) technique to design an autonomous underwater robot focusing on the Thai Navy military mission. Important user requirements extracted from the QFD method are the ability to record videos, operating at depth up to 10 meters, the ability to operate remotely with cable and safety concerns related...

15. Rancang Bangun Pengaman Motor Induksi 3 Fasa terhadap Unbalance Voltage dan Overload dengan Sistem Monitoring - putu sudiarta
Three phase induction motor is one of the electric machines are widely used in industry.In accordance with the role and function , the three phase induction motor is considered very important in the industry , so that the induction motor is required to work properly and safely. There are so many types of disturbances that have the potential to interfere with the function and motor work or even damage the motor of which is the unbalance voltage and overload. In this study realized protection three phase induction motor against voltage unbalance and overload disorders based on microcontroller ATMEGA 328. In...

16. INVESTIGATION OF PEM FUEL CELL FOR AUTOMOTIVE USE - A. K. M. Mohiuddin; Ataur Rahman; Mohamed Fadhil Chemani; Mohd Baihaqi Zakaria

This paper provides a brief investigation on suitability of Proton-exchange  membrane fuel cells (PEMFCs) as the source of power for transportation purposes. Hydrogen is an attractive alternative transportation fuel. It is the least polluting fuel that can be used in an internal combustion engine (ICE) and it is widely available. If hydrogen is used in a fuel cell which converts the chemical energy of hydrogen into electricity, (NOx) emissions are eliminated. The investigation was carried out on a  fuel cell car model by implementing polymer electrolyte membrane (PEM) types of fuel cell as the source of power to propel the...

17. Investigation of Friction Behaviors of Brake Shoe Materials using Metallic Filler - E. Surojo; Jamasri; V. Malau; M.N. Ilman
Some vehicles use brake shoe made from semi-metallic materials. Semi-metallic brake shoes are made from a combination of metallic and non-metallic materials. Metallic particles are added in the formulation of brake shoe material to improve composites characteristics. In this paper, friction behaviors of brake shoe material using metallic filler were investigated. Machining chips of cast iron and copper wire of electric motor used were incorporated in composite as metallic fillers with amount 0, 2, and 4 vol. %. Friction testing was performed to measure coefficient of friction by pressing surface specimen against the surface of rotating disc. The results show...

18. Active suspension system with integrated electrical tubular linear motor: design, control strategy and validation - Thul Andreas; Eggers Daniel; Riemer Björn; Hameyer Kay
This paper focuses on the design and control of an active suspension system, where a tubular linear motor is integrated into a spring damper system of a vehicle. The spring takes up the weight of the vehicle. Therefore the electric linear motor can be designed very compact as it has to provide forces to adjust the damping characteristic only. Design and construction of the active suspension system, a control strategy and validation measurements at a test bench are presented.

19. Electric Motor Considerations for Non-Cryogenic Hybrid Electric and Turboelectric Propulsion - Duffy, Kirsten P.
NASA Glenn Research Center is investigating hybrid electric and turboelectric propulsion concepts for future aircraft to reduce fuel burn, emissions, and noise. Systems studies show that the weight and efficiency of the electric system components need to be improved for this concept to be feasible. However, advances in motor component materials such as soft magnetic materials, hard magnetic materials, conductors, thermal insulation, and structural materials are expected in the coming years, and should improve motor performance. This study investigates several motor types for a one megawatt application, and projects the motor performance benefits of new component materials that might be...

20. Characterization of High Performance Electric Motor - Martinez, Joseph
No abstract available

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