Report KD 690 has been added to the menu KD-reports. The tittle of this report is: “Ideas about a 4-pole permanent magnet generator for the VIRYA-2S windmill using the housing of a 4-pole, 3-phase, 0.75 kW asynchronous motor frame size 80 and 4 neodymium magnets size 80 * 20 * 10 mm. Design report of the rotor (lambda design = 4.5, B = 3, stainless steel blades)”.

Advantages of these generator are that the magnet costs are rather low (about € 28) and that the maximum torque level is that high that the generator can be used as a brake in combination with the VIRYA-2S rotor and the hinged side vane safety system.