400Hz Power Supply for Aircraft

Running at 400 Hz allow the use of smaller transformer off course less weight for the aircraft and less energy stored in the transformer core per cycle. When is comes to a transmission line and long distance with 400 Hz very sensitive in terms of resistance so is bad choice. It's only good for aircraft most important thing is making thrust more frequency more speed so got good thrust thats all.

Besides cost effectiveness, convenience, and user friendly high frequency alternators and / or converters weights much less than the usual low frequency power supply which is the prime consideration in aircraft / aircraft equipment design.

Higher frequency (400 Hz instead of 60 Hz) power supplies has higher flux density delta due to shorter time period of 1 cycle (16.7 milliseconds for 60 Hz versus 2.5 milliseconds for 400 Hz), which allows smaller lighter magnetic cores in transformers and inductors used in aircraft where weight is always at a premium, more information on: http://www.gohz.com/400hz