Motor failures

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  • Harmonic distortion problems include equipment overheating, motor failures, capacitor failure and inaccurate power metering. The topic of power system harmonics was covered for the first time 20 years ago and the first edition has become a standard reference work in this area. Unprecedented developments in power electronic devices and their integration at all levels in the power system require a new look at the causes and effects of these problems, and the state of hardware and software available for harmonic assessment.

    pdf190p chipmoon 19-07-2012 76 38   Download

  • This book is mainly intended for designers and users of magnetic components in power electronics. It can also be used for didactical purposes. Magnetic components such as inductors and transformers constitute together with the control and the semiconductor components, the main parts in the design of power electronic converters. Some experience teaches that the design of the magnetic parts is still often done by trial and error. This can be explained by a (too) long working-in time for designing inductors and transformers.

    pdf456p nguyenthai_thinh 16-03-2013 75 34   Download

  • I have been undertaking the research and practical applications of power system optimization since the early 1980s. In the early stage of my career, I worked in universities such as Chongqing University (China), Brunel University (UK), National University of Singapore, and Howard University (USA). Since 2000 I have been working for AREVA T & D Inc (USA). When I was a full - time professor at Chongqing University, I wrote a tutorial on power system optimal operation, which I used to teach my senior undergraduate students and postgraduate students in power engineering until 1996.

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  • The microcontroller is an exciting new device in the field of electronics control. It is a complete computer control system on a single chip. microcontrollers include EPROM program memory, user RAM for storing program data, timer circuits, an instruction set, special function registers, power on reset, interrupts, low power consumption and a security bit for software protection. Some microcontrollers like the 16F818/9 devices include on board A to D converters.

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  • Tham khảo sách 'handbook of networks in power systems ii', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • I enjoyed reading this book for a number of reasons. One reason is that it addresses high-speed analog design in the context of microwave issues. This is an advanced level book, which should follow courses in basic circuits and transmission lines. Most analog integrated circuit designers in the past worked on applications at a low enough frequency that microwave issues did not arise. As a consequence, they were adept at lumped parameter circuits and often not comfortable with circuits where waves travel in space.

    pdf534p nguyenthai_thinh 16-03-2013 49 20   Download

  • This book describes high-speed precision motion control technologies which are developed and applied to hard disk drives (HDDs). The first feature of this book is that all the editors and the authors are engineers and professors who are directly engaged in the study and development of HDD servo control. Each author describes the control technologies that he developed, and most of these technologies have already been successfully applied to mass production of HDDs.

    pdf315p nguyenthai_thinh 16-03-2013 46 19   Download

  • The term “ smart grid” defi nes a self - healing network equipped with dynamic optimization techniques that use real - time measurements to minimize network losses, maintain voltage levels, increase reliability, and improve asset management. The operational data collected by the smart grid and its sub - systems will allow system operators to rapidly identify the best strategy to secure against attacks, vulnerability, and so on, caused by various contingencies.

    pdf233p nguyenthai_thinh 16-03-2013 37 15   Download

  • Although inelastic scattering of light from molecules, a phenomenon now known as Raman scattering, was observed by C. V. Raman in 1928, the nonlinear phenomenon of stimulated Raman scattering was not demonstrated until 1962. Soon after low-loss silica fibers became available around 1970, Roger Stolen and coworkers used stimulated Raman scattering in such fibers not only for amplification of optical signals but also for constructing fiber-based Raman lasers.

    pdf389p nguyenthai_thinh 16-03-2013 44 14   Download

  • The Lineman’s and Cableman’s Field Manual is written to accompany The Lineman’s and Cableman’s Handbook. The Field Manual contains many of the same pertinent tables, charts, formulas, and safety rules that are found in the Handbook. The goal of the Field Manual is to provide the information that is needed on the job site in a format that can be quickly and easily accessed. This customizable tool provides specially designed notes pages for personal notes.

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  • Energy harvesting from ambient waste energy for the purpose of running low-powered electronics has emerged during the last decade as an enabling technology for wireless applications. The goal of this technology is to provide remote sources of electric power and/or to recharge storage devices, such as batteries and capacitors. The concept has ecological ramifications in reducing the chemical waste produced by replacing batteries and potential monetary gains by reducing maintenance costs.

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  • Billions of dollars have been wasted on marketing programs that couldn’t possibly work, no matter how clever or brilliant. Or how big the budgets. Many managers assume that a well-designed, well-executed, well-financed marketing program will work. It’s not necessarily so. And you don’t have to look further than IBM, General Motors, and Sears,Roebuck to find examples

    pdf78p nhutretho 11-01-2013 44 12   Download

  • Of the many ages of man—the Stone Age, the Bronze Age, the Iron Age, etc.-that preceded the 1800s, and that led one into the other, none was as rewarding to mankind as the electrical age. We now stand in awe of the space age, andin fear we face the nuclear age. From electricity, however, has been drawn a n ever growing abundance o f light, power, warmth, intelligence, and medical aid-all beneficent, silent, and ready. Electricity is the one force in the arsenal of man that found no precedent in earlier history, nor was it drawn from classical times.

    pdf343p nguyenthai_thinh 16-03-2013 34 12   Download

  • A search for ‘Software Defined Radio’ on Amazon.com at the end of 2010 shows that almost 50 books have been written on the subject. The earliest book was published in 2000 and a steady stream of new titles has been coming out since. So why do I think that yet another book is warranted? SDR is now a mature field, but most books on the subject treat it as a new technology and approach SDR from a theoretical perspective. This book brings SDR down to earth by taking a very practical approach. The target audience is practicing engineers and graduate students using SDR as a tool rather...

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  • The onscreen image looks crisp and sharp, like a huge moving photograph. You feel entranced. More to the point, you feel the immediate urge to own this video projector, provided it works with the DVD player and the rest of your fledgling home theater gear. An enthusiastic salesperson sees your look and enters the demonstration room. “It’s really beautiful,” the salesperson proclaims. “That’s the 50-inch plasma unit that works in true 1080p at 16:9. Yup, she’s a dream.

    pdf410p nguyenthai_thinh 16-03-2013 28 9   Download

  • Logic Pro 9 is arguably the best and most complete version of Logic ever, which meant we had our work cut out for us! Thank God for co-writer Kevin Anker. He really took this project by the horns, and this revision would not be half of the book that it is without Kevin’s writing and organizing skills! As ever, I couldn’t do anything without the unwavering support of my wife, Michelle, my mother, and in the recent past, my late father, grandfather, and grandmother. I would also like to thank Dr.

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  • High-level synthesis – also called behavioral and architectural-level synthesis – is a key design technology to realize systems on chip/package of various kinds, whether single or multi-processors, homogeneous or heterogeneous, for the embedded systems market or not. Actually, as technology progresses and systems become increasingly complex, the use of high-level abstractions and synthesis methods becomes more and more a necessity. Indeed, the productivity of designers increases with the abstraction level, as demonstrated by practices in both the software and hardware domains.

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  • The most popular of the rigid reinforcements for printed wiring boards is woven E-glass (electrical-grade glass) fabric. These fabrics are constructed to meet weight, thickness, strength, and cost objectives. The woven fabric is used in many industries as reinforcements for thermoplastic and thermosetting plastic parts. Thermosetting laminates are particularly enhanced by the properties of the glass fabric.

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  • Tham khảo sách 'process in energy and combustion science', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf756p nguyenthai_thinh 16-03-2013 19 7   Download

  • Piezoelectric materials form the backbone of several components utilized in communication systems, defense systems, industrial automation, medical diagnostics, energy storage and harvesting, and information technology. In high performance piezoelectric applications the material of choice is based upon lead-based composition with Pb(Zr,Ti)O3 (PZT) being the base. Recently worldwide environmental considerations are demanding the elimination of lead-based materials from all the consumer items. This has created urgency for finding alternative to PZT.

    pdf0p nguyenthai_thinh 16-03-2013 38 6   Download

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