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why three phase system is not preferred in aircrafts power
cckts if yes than explain reasons?
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Answer Posted / vidhya
400Hz was very common in aircraft especially during WWII
and later. It was done because transformers, motors and so
on are very much lighter than with lower frequencies like
60Hz.DC could not be easily be transformed with the
echnology then.However, modern electronics allows DC to be
converted (transformed) with
very small magnetics operating at 100kHz or higher. This
stuff trumps 400Hz. What do they do in modern aircraft?
I was basically referring to the power transmission and
distribution. DC is more efficient and uses less material,
insulation, with less loss than does poly phase AC. That's
why ultra high power transmission lines like the
pacific inter-tie are often DC these days.
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