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发表于 2010-10-27 11:03:24
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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. The
design has many aspects, such as the magnetic core and winding, eddy currents,
insulation, thermal design, parasitic effects, and measurements. A lot of
literature exists concerning those subjects, but the information is spread over
many articles and methods. This book is mainly focused on classical methods
and uses numerical tools such as finite element methods in the background.
We try to give some overview of the basics and technological aspects of the
design. In the different chapters we also describe analytical approximations
based on known analytical solutions, but tuned by finite elements. In most
of the cases, a sufficient accuracy can be obtained and the results are obtained
almost instantaneously, even for graphics using many calculation points. A
fast approximation method is useful as a first step in the design stage, whereas
numerical tools such as finite elements are good in analysis. Specific books
on finite elements exist and the description will not be repeated here.
Some basic introduction on magnetic principles and materials are given |
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