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Basic ac theory

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  • Direct torque control - or DTC - is the most advanced AC drive technology developed by any manufacturer in the world. The purpose of this technical guide is to explain what is; why and how it has evolved; the basic theory behind its.

    pdf32p gaugau1905 09-12-2015 53 2   Download

  • A long-term goal of our work is to develop the basic control theory for me- chanical systems, and Lagrangian systems in particular. There are several reasons why mechanical systems are good candidates for new results in nonlinear control. On the practical end, mechanical systems are often quite well identified, and ac- curate models exist for specific systems, such as robots, airplanes, and spacecraft. Furthermore, instrumentation of mechanical systems is relatively easy to achieve and hence modern nonlinear techniques (which often rely on full state feedback) can be readily applied.

    pdf23p loixinloi 08-05-2013 51 1   Download

  • An Introduction to Electric Circuits is essential reading for first year students of electronics and electrical engineering who need to get to grips quickly with the basic theory. This text is a comprehensive introduction to the topic and, assuming virtually no knowledge, it keeps the mathematical content to a minimum. As with other textbooks in the series, the format of this book enables the student to work at their own pace. It includes numerous worked examples throughout the text and graded exercises, with answers, at the end of each section....

    pdf225p nguyenthai_thinh 21-03-2013 111 26   Download

  • There is a large gap between the theory of electron flow, magnetic fields and that of troubleshooting electrical equipment and control circuits in the plant. In this book, we try to avoid or at least minimize discussions on the theory and instead focus on showing you how to troubleshoot electrical equipment and control circuits. The book helps to increase your knowledge and skills in improving equipment productivity whilst reducing maintenance costs. Reading this book will help you identify, prevent and fix common electrical equipment and control circuits. The focus is ‘outside the box’.

    pdf248p nguyenthai_thinh 16-03-2013 102 29   Download

  • Most students of electricity begin their study with what is known as direct current (DC), which is electricity °owing in a constant direction, and/or possessing a voltage with constant polarity. DC is the kind of electricity made by a battery (with de¯nite positive and negative terminals), or the kind of charge generated by rubbing certain types of materials against each other. As useful and as easy to understand as DC is, it is not the only \kind" of electricity in use.

    pdf556p ndkhuong177 14-07-2012 101 19   Download



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