Report KD 748 has been added at the menu KD-reports. The title of this report is: “Ideas about a 16-pole radial flux permanent magnet generator with a 3-phase, 1-layer stator winding with no iron in the coils”.
KD 341 reviewed
A new chapter 10 has been added to report KD 341 about the develoment of the VIRYA generators. The title of this chapter is: “Back to the modified 4-pole asynchronous motor with a standard 230/400 V winding”.
KD 732 reviewed
Report KD 732 about the VIRYA-14 has been reviewed. Chapter 7 has been changed completely. The title of this chapter is now: “Use of the VIRYA-14 in combinatioin with twelve detached houses”. So the twenty semi-detached houses are replaced by twelve detached houses. The reason is that the note about the semi-detached houses is no longer public. The (Dutch) note about the detached houses can be copied from my website at the menu “No wind energy”.
KD 718 reviewed
A new chapter 7 has been added to report KD 718. The title of this chapter is: “Use of a 4-pole motor frame size 100L and a 32-pole armature”. The armature has 32 mechanical poles but 4 magnetic poles and can thereforte be used in combination with the original 4-pole, 3-phase winding of a 3 kW motor. This armature has 288 preference positions per revolution and the peak on the cogging torque will therefore be very low. I think that this is the simplest and cheapest way to modify an asynchronous motor into a PM-generator.
A new chapter 8 has been added at 14-5-2023. The title of this chapter is: “Use of a 4-pole motor frame size 80 and a 28-pole armature”.
KD 580 reviewed
A new chapter 7.6 has been added to report KD 580. The title of this chapter is: Using a 30-pole armature and a different winding”.
KD 747 added
Report KD 747 can be copied for free at the menu KD-reports. The title of this report is: “Ideas about a 30-pole, 3-phase permanent magnet generator using the housing and winding of a 6-pole motor frame size 12M”. The armature of this generator has 30 mechanical poles and the stator has 36 poles resulting in 180 preference positions per revolution. The peak on the cogging torque will therefore be rather low. The armature has 6 magnetic poles and can therefore be used in combination with the standard 3-phase motor winding.
A new chapter 6 has been added to report KD 747 on 27-4-2023. The title of this chapter is: “Using a 48-pole armature and a 12-pole, 3-phase, 2-layers winding”.
The chapter 6 about the 48-pole armature has been cancelled ob 30-4-2023 and replaced by a new chapter 6 with title: “Using a real 30 pole armature and a 3-phase, 1-layer winding”.
KD 745 added
Report KD 745 has been added to the menu KD-reports. The title of this report is: “Investigation of the Sparta Ion front wheel hub motor as generator for a small wind turbine”. The cogging torque and the open voltage have been measured. The conclusion is that the peak on the cogging torque is too high to use this hub motor as generator.
Notitie over de quadrofoon herzien
Er werd een nieuw hoofdstuk 6 toegevoegd aan mijn notitie over de quadrofoon. De titel van dit hoofdstuk is: “Vier elektrisch bekrachtigde ventielen en drie toetsen.
KD 285 reviewed
The Cmh0.23-alfa curve has been replaced by the Cmh0.2-alfa curve.
Notitie over VIRYA-30 herzien
De notitie “Ideeën over een 4-bladige windturbine met een rotordiameter van 30 m” werd herzien. De notitie werd nu onderverdeeld in de hoofdstukken 1 Inleiding en 2 Ideeën over de VIRYA-30. Aan hoofdstuk 1 werd een stukje toegevoegd over vogelslachtoffers. De VIRYA-30 werd in hoofdstuk 2 toegepast in een project met 60 vrijstaande huizen geschikt voor driedubbele bewoning.