Advances in High Temperature Superconductors (HTS) are enabling a new class of synchronous rotating machines (SuperMotors and SuperGenerators) that can generically be categorized as SuperMachines. Compared to conventional machines of equivalent rating, these SuperMachines are expected to be less expensive, lighter, more compact, efficient, and provide significantly superior stable operation in a power system. The field windings are made with HTS conductor material (BSCCO, or Bi-2223) which operates at 35-40 K and can be cooled with inexpensive, ....etc

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Control Dynamics of a Doubly Fed Induction Generator Under Sub- and Super-Synchronous Modes of Operation


M. Aktarujjaman, Student Member,
IEE, M.E. Haque, Member, IEE, K. M. Muttaqi, Senior
Member, IEE, M. Negnevitsky, Member,
IEE and G. Ledwich, Senior Member, IEE


Abstract-
Abstract
Depending on wind speed, a doubly fed induction generator (DFIG) based variable speed wind turbine is capable of operating in sub- or super-synchronous mode of operation using a back to back PWM converter ....etc

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The superconducting generator using super conductors in field winding is superior to conventional generator in terms of power system stability, generator efficiency, generator dimensions and weight. They have been expected as a key generator technology to realize large capacity more them 1GVA.. Recently for then advantages are pointed out compared to conventional generator like small internal impedance that is effective to make system voltages in deregulated power system. These technical merits have pushed the development of superconducting gen ....etc

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Example:

Ms. Berna Higgins
45, Adolf street,

Mississippi.
April 1, 2011
Mr. Frank Austen,
25, Vincent Street,

Mississippi.
Dear Mr. Austen,
I would like to express our earnest appreciation to you for serving as one of our facilitators during the recent Theater Workshop for Poor Children which we conducted last month in our city. We needed many facilitators like you to support for the activity to proceed smoothly and successfully and we are lucky that you agreed to help us for the workshop. We are highly obliged for the time and effort you ....etc

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Power & Procedure for conducting Inquiries Under the Protection of Human Rights Act, 1993

Presented By
Naresh Kumar Azad
LL.M ( 3rd Trimester





Powers Relating to Inquiries

Have all the powers of Civil Court
Summoning and & enforcing the
attendance of witnesses & Examine them on oath;

Discovery & production of any document;

Receiving evidence on affidavits;

Issuing commissions for the examination witnesses or documents

To require any person ....etc

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Abstract
Superconducting generators are being developed throughout the world. The present status of this effort is reviewed and the different ways in the development programs of the leading manufacturers are outlined. The report describes tne comprehensive multi-step program of advanced turbogenerator technology established by KWU/Siemens which includes the manufacture and testing of a superconducting rotor of full commercial size but reduced active length. Rotor design and materials as well as the test facilities are shown. Some major problem ....etc

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Improved Controller for High Temperature Super
Conducting Magnetic Energy Storage (HTS-SMES)

M. V. Aware

D. Sutanto, Senior Member, IEE,
School of Electrical, Computer
and Telecommunications Engineering
University of Wollongong
Wollongong, Australia


Abstract

This paper describes a novel controller for a High
Temperature Superconducting Magnetic Energy Storage (HTSSMES)
that can ensure (a) fast return of energy to the superconducting
coil under constant current mode and (b) a cons ....etc

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Topic: High Temperatures and Superconductors
Presented By:

Ch. Tilak Nagendra & B.Hema Bala Kumar
Vignan s Engineering College
Vadlamudi, Guntur



ABSTRACT

The discovery of superconductivity brings a tremendous change in the field of Science and Engineering from twentieth century onwards. The zero receptivity (or infinite conductivity) of a metal is known as superconductivity and this property of metal can be observed only at very low temperatures. Researchers ar ....etc

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electricity-conducting plastics
abstract
ScienceDaily (Apr. 3, 2010) A new technique developed by Princeton University engineers for producing electricity-conducting plastics could dramatically lower the cost of manufacturing solar panels.
By overcoming technical hurdles to producing plastics that are translucent, malleable and able to conduct electricity, the researchers have opened the door to broader use of the materials in a wide range of electrical devices. ....etc

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Superconducting electric machines are electromechanical systems that rely on the use of one or more superconducting elements. Since superconductors have no DC resistance, they typically have greater efficiency. The most important parameter that is of utmost interest in superconducting machine is the generation of a very high magnetic field that is not possible in a conventional machine. This leads to a substantial decrease in the motor volume; which means a great increase in the power density. However, since superconductors only have zero resis ....etc

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