BUILD A DIY 4 kW AXIAL FLUX WIND TURBINE
Build Video Coming Soon!
Wind Turbine Spec's
Power: ~2700W @ 26 mph w/MPPT
Swept area: 86.7 sq.ft/8 sq.m
Blades: #3, 72"/1.8m each w/ USA 27 aerofoil
Cut-in wind speed: ~3 mph
PMG: 3 phase dual air core axial flux stators w/ 12 coils each, quad 12" rotors w/ 16 N52 grade neodymium magnets each
Overspeed control: furling tail
UPCOMING PROJECT: This HAWT (horizontal axis wind turbine) is rated for up to 4600 watts at 30 mph and will feature an air core axial flux pmg for low wind startup without resistance from the 'cogging' effect that's produced in other turbines with conventional steel core stators.
The pmg for this turbine will consist of two stators and four magnet rotors. The stators will have 12 coils each. The magnet rotors will be 1/4" x 12" dia. steel, and will have 16 N42 grade 2"x1"x0.5" neodymium magnets bolted to each.
The blades will be 72" long from tip to root, giving a total rotor diameter of 12'. They have been designed with the USA 27 aerofoil profile for a TSR of 6 using BEMT, and will have a substantially large root section (up to 16" wide) which wraps around the nose cone to help increase torque in low winds.
This project will commence at the beginning of February, so be sure to check back here later or visit the social media links on the home page to stay up to date. Once finished, a step by step build guide and 3D CAD for this project will be available for download. There will also be many smaller tool/jig builds involved with this project as well, so there will be a lot of information coming in the next few weeks to take advantage of!