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

Mostrando recursos 1 - 20 de 1,051

1. Fault diagnosis and fault tolerant control of multiphase voltage source converters for application in traction drives - Salehifar, Mehdi
There is an increasing demand for vehicles with less environmental impact and higher fuel efficiency. To meet these requirements, the transportation electrification has been introduced in both academia and industry during last years. Electric vehicle (EV) and hybrid Electric vehicle (HEV) are two practical examples in transportation systems. The typical power train in the EVs consists of three main parts including energy source, power electronics and an electrical motor. Regarding the machine, permanent magnet (PM) motors are the dominant choice for light duty hybrid vehicles in industry due to their higher efficiency and power density. In order to operate the power...

2. Caracterización mecánica de un motor eléctrico de corriente alterna utilizando un freno de foucault - Álvarez V., César Augusto; Marín Q., Juan Pablo; González C., Juan Camilo
The Autonoma university in Manizales acquired a Foucault brake to perform laboratory test to characterize an electrical motor. A module was constructed for the analysis of failures in bearings by vibration; the break was connected to the module to do the tests and capture information to come to the graphics of torque and power against the revolution per minute of the motor.

3. ME student - Sneha S. Chavan; Dr. Shashank; B. Thakre; Prof Kiran; R. Kaware
Abstract--Gearboxes are used in almost every industry right from power to marine, and also include agriculture, textile, automobiles, aerospace, shipping etc. A gearbox is a gear or a hydraulic system responsible for transmitting mechanical power from a prime mover (an engine or electric motor) into some form of useful output. It is referred to the metal casing in which a number of gears are sealed. Pivot pin fitted in lever of gearbox which is used for engaging the gears in gearbox. It is seen that the component Pivot Pin has failed in few Vehicles after completion of certain Kms. In...

4. Producer Services, Manufacturing Linkages, and Trade", FIW-Working Paper - Joseph Francois; Julia Wörz; Jel-codes O
Working with a mix of panel data on goods and services trade for the OECD for 1994-2004, combined with social accounts data (i.e. data on intermediate linkages) for 78 countries benchmarked to 2001, we examine the role of services as inputs in manufacturing, with a particular focus on indirect exports of services through merchandise exports, and also on the related interaction between service sector openness and the overall pattern of manufacturing exports. From the cross-section, we also develop a set of stylized facts linking services to level of development and the density of intermediate linkages. We find significant and strong...

5. Executive Summary
There are several advantages to the use of electricity as a transportation fuel—notably, high vehicle efficiency, lower operating costs, and zero tailpipe emissions. Because of the high efficiency of an electric motor, plug-in electric vehicles (PEVs) can be two to three times more efficient than a comparable gasoline vehicle, and electricity as a fuel is in most cases less expensive per mile than gasoline. The high vehicle efficiency plus low “fueling ” cost provides a lower cost of operation compared to a conventional gasoline vehicle. Additionally, electricity rates have been historically less volatile than gasoline prices, and this pattern is...

6. MOTOR-DRIVEN ELECTRIC VEHICLE, ITS DESIGN AND CONTROL AS A FUTURE MOBILITY SOLUTION - Rob Res; Yunha Kim Et Al; Yunha Kim; Kanghyun Nam; Hiroshi Fujimoto; Yoichi Hori; Corresponding Yunha Kim
This paper presents a novel chassis structure for advanced mobility platforms, using caster wheels with disturbance observers, and independent driving motors. The system consists of two independent driving wheels and two caster wheels. The proposed configuration enables the vehicle to have: a low mechanical stiffness against the direct yaw moment input because caster wheels are free to rotate; and high static stability because of the four wheels having a large base geometry. In addition, by introducing disturbance observers, the vehicle was given enhanced mobility and safety characteristics. A number of advantages, which include small-radius turning, under-steer gradient control, load transfer...

7. A three-phase induction motor electric driver - modeling and implementation - Fajardo Jaimes, Arturo; Ojeda Ruiz, Fernando; Karim Hay Harb, Abdel; Perilla Galindo, Gabriel
This paper gives a detailed description of a non-conventional speed-variation linear model in­tended for a conventional three-phase induction motor. The proposed architecture consists in a single-phase unit-power-factor tap (PFC) fo­llowed by three-phase inverter, which feeds the motor by using the scalar-control technique. The whole system is digitally-controlled by a Digital Signal Processor (DSP). In order to obtain the model, non-conventional use of the average ope­rator is suggested, which involves a calculation time span that depends on the target dynamics. This type of analysis simplifies the development of lossless models in terms of model precision. The project was divided into three...

8. A temporal basis for predicting the sensory consequences of motor commands in an electric fish - Kennedy, Ann; Wayne, Greg; Kaifosh, Patrick; Alvina, Karina; Abbott, L.F.; Sawtell, Nathaniel B.
Mormyrid electric fish are a model system for understanding how neural circuits predict the sensory consequences of motor acts. Medium ganglion cells in the electrosensory lobe create negative images that predict sensory input due to the fish’s electric organ discharge (EOD). Previous studies showed that negative images could be created through plasticity at granule cell-medium ganglion cell synapses provided that granule cell responses to the brief EOD command were sufficiently varied and prolonged. Here we show for the first time that granule cells indeed provide such a temporal basis, and that it is well matched to the temporal structure of...

9. Instrumentation for Core Loss Measurement - S. Parameswari
Abstract: In Induction Motors, irrespective of the load condition, whenever supply is provided to the electric motor, core loss exists and it remains constant. Therefore, Core loss is a major loss component in electric motors. Hence, core quality checking is an important one in electric motor. In this project, core loss tester is developed for measuring core loss in cleated stator pack. In back iron of the cleated stator pack, a 1.5T flux density is established to measure the core loss. For this purpose, virtual instrumentation technique is used.

10. Design of Switched Reluctance Motor for Three Wheeler Electric Vehicle - T. Dinesh Kumar; M. An
Abstract—Switched Reluctance Machines (SRM) offer attractive attributes for automotive applications. Low cost, high reliability, and competitive weight and efficiency combine to make the switched reluctance (SR) motor drive a strong candidate for application in future electric vehicle (EV) propulsion systems. This paper proposes a methodology to determine separately the peak and continuous power ratings of a switched reluctance motor (SRM) for electric propulsion of an electric vehicle (EV).same machine have to deliver peak and continuous power for different road load condition of vehicle. Then gives switched reluctance design guidelines for battery operated electric vehicles. Finally, it presents the design and...

Since the cost of fossil fuels is gradually increasing day by day as well as government policy is also towards the minimization of atmospheric pollution, it is mandatory for the human being to concentrate more on designing a hybrid bicycle powered by re-chargeable lead acid batteries. The aim of this paper is to design an electronic control unit for brushless DC (BLDC) motors in an electric cum human powered bicycle, characterized by new solutions for the control method and the 8-bit microcontroller system. A dynamic model of the vehicle has been realized, and the characteristics of the ECU have been...

12. doi:10.4028/ Research of Accuracy Parameters of the Gantry Course - Gintas Viselga
movement Abstract. A laser instrument maintains the course of the positioned gantry module. A laser beam generator emitting a vertical beam is placed at the end of the experimental field. A laser beam catcher with photo diodes is mounted onto a positioned gantry module replaceable support. Course deviations were assessed in two cases: when laser, straight-course maintaining mechanism was mounted at the same end of the spar as positioning trundle; and when it was mounted at the middle of the spar. Furthermore, we estimated how course deviations vary when changing the interaxial distance of laser catcher photodiodes. An electromechanical transmitter...

13. Design and fabrication of high energy miller used to synthesis of materials - Vera, Pedro; Lara, Homer
This work shows the design of miller machinery to advanced material, the mixer was developed with students based in the process of mechanosynthesis, the design had a price 40% less than commercial miller-mixer in Mexico market, the design was oriented to have better control on program of work, try to reduce the cost, and add capacity. So the mixer was designed using the Software Inventor 2010, materials as aluminum, stainless steel and electric motor 127 V, the angular velocity to work was reduced with flexible system, the results shows a adequate work velocity, continuous operation with the double of capacity...

14. The place of the motor bus as a supplement to electric railways / by R. Gilman Smith. - Smith, R. Gilman.; American Electric Railway Transportation and Traffic Association.
"Before the American Electric Railway Transportation and Traffic Association at its convention, held at Atlantic City, N.J., Oct. 11, 12, 13, 14 and 15, 1920."

15. Development of meat-bone separator for small scale fish processing - Bibwe, Bhushan R.; Hiregoudar, Sharanakumar; Nidoni, Udaykumar R.; Anantachar, M.; Shrestha, Bijay
The belt and drum type meat-bone separator was developed for small-scale fish processing and evaluated using Tilapia fish (Oreochromis mossambicus) in terms of capacity, yield, percentage yield, bone content, colour and power consumption. It consists of a perforated drum (3 mm), single phase electric motor, speed reduction gear box and drive system. The machine was evaluated using two food grade belt viz., natural rubber (Belt A-35 shore) and canvas belt (Belt B-65 shore) for three drum speeds. The machine capacity was in the range of 45.59 to 68.54 kg h−1 for belt A with a yield of 1.148, 1.069 and 1.066 kg, and...

16. Modelo matemático para un robot móvil. - Ríos González, Luis Hernando; Bueno López, Maximiliano
En este artículo se desarrolla el modelo matemático de un robot móvil tipo diferencial. Para el desarrollo del modelo se consideran las características cinemáticas, dinámicas y eléctricas del motor. El modelo se desarrolla con base en los datos de la plataforma móvil PMETIN. Se realizan algunas simulaciones empleando Simulink para comprobar el correcto funcionamiento del modelo.

17. Diseño estructural y sistema de suspensión y articulación de vehículo unipersonal de tres ruedas, con motores eléctricos con tecnología Brushless - Menghini, Matías; Actis, Marcos Daniel; Cavallin, Benjamín; Martiarena, Tomás
Durante décadas vehículos de ruedas con diferentes diseños y portes han sido el medio más importante de transporte de personas y objetos; en estos últimos años el incremento del tráfico en ciudades y rutas ha generado problemas de espacio de circulación cada día más graves y difíciles de solucionar. Con la idea de encontrar ayudas con la utilización de nuevos conceptos y recursos nos hemos propuesto un trabajo que contenga alguna de las soluciones necesarias sobre todo aquellas que mejoren las del medio ambiente. Contando con recursos propios en lo que hace a materiales y desarrollos en energías alternativas, particularmente motores...

18. Metodología para los estudios de reaceleración y rearranque de motores de inducción correspondiente a una planta industrial - Barbero, Santiago; Barbieri, María Beatriz; Beroqui, Mario César; Biteznik, Carlos E.; Albarrazín, Jorge O.
Se propone establecer una metodología que permita diseñar un sistema de reaceleración y rearranque de motores eléctricos de una planta industrial. Se pretende con esto, mejorar la confiabilidad y seguridad de la instalación, minimizando los riesgos para el personal y el impacto ambiental derivado de posibles eventos en el sistema de abastecimiento o perturbaciones internas a la planta. En conjunto con los responsables técnicos de cada proceso se determinan las prioridades para cada motor conformándose diferentes grupos, los cuales deberán ser reacelerados, rearrancados o deslastrados. Se realizan simulaciones para determinar de acuerdo al tipo de falla la carga máxima a...

19. Control lineal indirecto de campo del motor de inducción. - Giraldo Suárez, Eduardo; Giraldo Buitrago, Didier; Sánchez A., Santiago
Este artículo utiliza la técnica lineal de realimentación de estados basada en el modelo reducido del motor de inducción para desacoplar el par eléctrico y el flujo, el motor es controlado usando la estrategia de campo indirecto orientado. Se presenta el modelo del motor en el sistema de coordenadas del flujo del rotor y su posterior linealización alrededor del punto de operación mediante la serie de Taylor.

20. Determinación de pérdidas eléctricas en motores de inducción modelados electromagnéticamente con el método de los elementos finitos - Cortés, Camilo Andrés; Deprez, Wim; Driesen, Johan; Pérez, Jhon J.

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