A.Inner rotor design with good tightness. Level of protection:IP54

B.Radial tile-shaped permanent magnet rotor magnetic circuitstructure: flux density is 10-15% higher than traditionalTangential magnetic circuit.

C.Generator fractional slot winding: generator design adoptsfractional slot winding; lower output harmonic component ofgenerator; lower waveform distortion; lower startup resist moment.All of these make wind turbine startup with lower windspeed.

D.Special electromagnetic load design: not only consider of generatorcapacity, but also improve generator’s overload capacity by 1.5times.

E.Larger cooling area: generator cooling area is over 2.5 timescomparing with Stator outer circumference area. The temperaturerise is always lower than 85 degree with long time running with 1.2times to full output power.

F.Cold-rolled non-oriented silicon steel sheet: Lower generator ironloss

G.Independent design stator piece: more reasonable generator statorcell structure. Lower current density

H.Higher fixed voltage adjustable rate: Fixed voltage adjustable rateis over 45%. Lower cut-in wind speed; Easier for grid-connectioninverter power design.

I.High structure strength: generator case can bear some damagedworking condition such as single blade fly out. 1.5 times safetyratio

J.Permanent magnet direct-drive structure: no gear case, low failurerate.