Info air extractor and connection for vmc turbofan

[xxx74]

Sorry for the absence, I have not received email reply notifications ...

Happy New Year to all and thank you for your answers.

Regarding the capacitor 3 micro Farhad, I actually have one that went on the boiler, so it should be for the air extractor. However, I do not remember if he was connected live on both wires ...

For the location of my future vmc df, I will actually put it in place of my current vmc in the attic, isolated I specify and naturally heated, because the hot air rises ... In addition I already have an entry of air in facade.

Do you think that we can vary the speed of this engine or ask for two or three different speeds?

Regarding the displayed performance, 11watts, it is interesting or a little Legé for what I wish to do?

[simplino]

Happy New Year .

Happy New Year to all and thank you for your answers.
Do you think that we can vary the speed of this engine or ask for two or three different speeds?

Regarding the displayed performance, 11watts, it's interesting or a bit light for what I want to do?

The speed of a quasi-synchronous asynchronous motor is set by the 50Hz frequency 220V and the number of coils that make a rotating magnetic field.
So we must make a power supply generating a frequency 220V less than 50Hz pulse modulation type quite complicated full of IGBT, large engines do this at startup, as for TGV, RER ......

https://www.youtube.com/watch?v=kQauCrxwWjM
http://compositionsludovic.free.fr/vari ... ristor.php
This simple solution will work badly because it does not change the frequency 50Hz, good for brush motor.

http://www.thierry-lequeu.fr/data/Gonthier/SCR02.pdf
https://documents.epfl.ch/groups/t/tr/t ... toire1.pdf
http://www.ijest-ng.com/ijest-vol.1-no.1-pp.90-105.pdf
http://www.5m-induction-systems.com/gal ... alogue.pdf
http://mach.elec.free.fr/divers/polycop ... _puiss.pdf
etc ...

Otherwise by decreasing a little the 220V it will slow down losing all its strength to end up to hang at higher voltage it will have to work, on a heat exchanger with high pressure drop, large plates very close (about mm , otherwise the heat exchanger is inefficient !!)) with full dust filters.

11W - 30W is low, just the combustion air of a boiler, 200W is used in a 10KW chimney hot air circulator of a home at home.
It all depends on your actual ventilation needs.
etc ...
Otherwise by decreasing a little the 220V it will slow down losing all its strength to end up to hang at higher voltage it will have to work, on a heat exchanger with high pressure drop, large plates very close (about mm , otherwise the heat exchanger is inefficient !!)) with full dust filters.

11W - 30W is low, just the combustion air of a boiler, 200W is used in a 10KW chimney hot air circulator of a home at home.
It all depends on your actual ventilation needs.

[xxx74]

Ok, thanks for all these details.

So, I have better times to get the best price on the corner to consider something else.