Research Training Fellowship for Developing Country Scientist (RTFDCS) Report
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Date
2011-03
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Abstract
Natural phenomena and advances in technology have worsened electromagnetic
energy emission to the environment. This electromagnetic energy emanate from both
intentional and non-intentional sources. This energy when it attains enough strength
affects and interferes with the operations of most electrical and electronic equipment.
Generally these effects are called electromagnetic interference (EMI) noise.
Power electronic converters are mostly either sources or victims, or both, at the same
time, of the EMI noise. Stricter EMI regulations, circuit miniaturisation along with
advances in semiconductor switching speeds have created difficult engineering
tradeoffs for designers of power electronic equipment. Faster switching requirements
on power devices in order to reduce losses and device size inherently result in
increased high frequency EMI noise. This noise brings about the problem of
nonconformity to electromagnetic compatibility (EMC) standards. Also, the
miniaturisation happening nowadays causes power electronic converters to become
susceptible to the noise they generate.
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Keywords
EMC, EMI, switch mode power electronic converters