A new chapter 7.4 has been added to report KD 580 about a small 34-pole PM-generator. The title of this chapter is: “Using a 6-pole stamping frame size 90 and an armature with 38 poles”.
KD 738 reviewed
A new chapter 7 has been added to report KD 738 about the VIRYA-6. The title of this chapter is: “Using of a resistance as load for heating”. It appears that switching from star to delta is a good way to make the rotor start at low wind speeds and to generate power at low wind speeds.
KD 377 reviewed
A new chapter 7 has been added to report KD 377 about the pendulum safety system already written in 2008. The title of this new chapter is: “Using a tension spring instead of balancing weights”.
KD 738 added
Report KD 738 has been added to the menu KD-reports. The title of this report is: “Calculations executed for the 3-bladed rotor of the VIRYA-6 windmill (lambda design = 6) with the pendulum safetey system with a torsion spring connected to the generator type TGET620-5KW-200R for grid connection or heat generation”.
KD 713 herzien
Rapport KD 713 werd herzien. De tekst werd in overeenstemming gebracht met de wijzigingen die in KD 709 werden aangebracht. In hoofdstuk 7 werd een stukje toegevoegd waarbij het reservoir kleiner is en waarbij vooral de windmolen de energie in de winter levert.
KD 285 reviewed
Report KD 285 about the Gö 711 airfoil has been reviewed. New graphs for Cmh0.25 and Cmh0.23 have been added to figure 9. The choice of the turning point for Cmh0.23 gives a Cmh value which is almost constant for a large alpha range.
KD 709 herzien
Rapport KD 709: “Opwekking van warmte met een windmolen in het buitengebied” werd herzien. De VIRYA-6.5 werd vervangen door de VIRYA-5B3.
Commentaar op Verslag thematafels en hoofdtafel
Onderaan het menu KD-reports werd de volgende notitie toegevoegd. Commentaar op “Verslag thematafels en hoofdtafel” van Hannet Johannes. Deze drie bijeenkomsten over de energietransitie werden georganiseerd door de gemeente Meierijstad. De twee thematafels heb ik bijgewoond.
KD 733 added
Report KD 733 has been added to the menu KD-reports. The title of this report is: “Calculations executed for the 2 bladed VIRYA-3.9 windmill and the 3-bladed VIRYA-3.9B3 windmill (both lambda design = 6, tapered stainless steel blades) driving the VIRYA-4.2 PM-generator for 26 V delta and 26 V star”.
Ideal hub dynamo
The note: “Ideas about an ideal hub dynamo” can be copied for free from my website at the menu “No wind energy”. This note is a translation into English of the Dutch note: “Ideeën over een ideale naafdynamo” of November 2017.