Report KD 678 has been added to the menu KD-reports. The tittle of this report is: “Calculations executed for the 3-bladed rotor of the VIRYA-1.02 windmill (lambda design = 3.5, 15° folded stainless steel blades) meant to be couples to the VIRYA-1.25AF generator”. The 3-bladed VIRYA-1.02 is an alternative for the 2-bladed VIRYA-1 or the 2-bladed VIRYA-1.25AF.
A new chapter 6 has been added to report KD 645. The tittle of this chapter is: “Alternative winding with 15 coils”. The original winding has a 1-layer winding with two coils per phase, so totally six coils. The alternative winding has no sleeves in the Delrin bush but thirty 8 mm holes. The armature has a length of 80 mm in stead of 100 mm and one magnet size 80 * 20 * 10 mm is used in each groove. It is expected that the reduction of the power because of the shorter armature is compensated because now per phase five coils are used in stead of two coils.
The extended specification at the menu VIRYA-folders has been reviewed. The VIRYA-1.75W, the VIRYA-1.8W and the VIRYA-2.22 have been added to the extended specification.