Power electronics is defined as the application of solid-state
electronics to the control and conversion of electric power. It
also refers to a subject of research in electronic and electrical
engineering that deals with the design, control, computation,
time-varying energy-processing electronic systems with fast
dynamics. Power electronic converters can be found wherever there
is a need to modify the electrical energy form. With "classical"
electronics, electrical currents and voltage are used to carry
information, whereas with power electronics, they carry power. Some
examples of uses for power electronic systems are DC/DC converters
used in many mobile devices, such as cell phones or PDAs, and AC/DC
converters in computers and televisions. Large scale power
electronics are used to control hundreds of megawatt of power flow
across our nation. Research in this area includes power electronics
applications to control large scale power transmission and
distribution as well as the integration of distributed and
renewable energy sources into the grid. It is estimated that by the
year 2030, more than 80% of all electrical energy will be processed
by power electronics. The advantages continue to grow for technical
engineers who understand the fundamental principles and technical
requirements of modern power conversion systems. Fundamentals of
Power Electronics covers design-oriented analysis, modeling and
simulation techniques leading to practical engineering of
high-performance power electronics systems. This book will lead you
to practical examples of the most relevant concepts and methods.
Power electronics applications are extended to various fields such
as Aerospace, Automotive electrical and electronic systems,
commercial, industrial, residential, telecommunication,
transportation, utility systems, etc. In case of automotive
electronics, the electrically-generated systems are used in
automobiles such as road vehicles like telematics, in-car
entertainment systems, carputers, and so on. The need to control
engines of automobiles originated in automotive electronics for
proper controlling and conversion. Application of power electronics
in automotive applications plays a major role in controlling
automotive electronics. Automotive electronics include modern
electric power steering, HEV main inverter, central body control,
braking system, seat control, and so on. Application of power
electronics in the automotive power generation system provides
automotive alternators with improved efficiency and high power,
along with high temperature withstanding capacity and high-power
density with a variety of research in designing of alternator with
a switched mode power electronics applications. The frequently used
alternator in automotive applications is Lundell or Claw-pole
alternator, as it is suitable for the required emerging
performance. Field and armature characteristics of this alternator
are enhanced by the use of power electronics. These alternators are
used in automobiles for supplying power to the batteries and
electrical system while the engine is running. Automotive
alternators require a power electronic voltage regulator for
producing a constant voltage at the battery terminals by modulating
small field current.
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