Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated

[FixedSys]

...reading a analog in can only be done 100,000/sec; (divide by 16 for all of them)   160us resolution for all; 10us resolution for a single one

Consider leaving the Arduino for control and add in a Raspberry Pi with ADCs (say MCP3008 - 8-Channel 10-Bit ADC With SPI Interface) dedicated to logging. Would be cost effective, would give you an order of magnitude more resolution and wouldn't compromise the control side.

[r2fpl]

Consider leaving the Arduino for control and add in a Raspberry Pi with ADCs (say MCP3008 - 8-Channel 10-Bit ADC With SPI Interface) dedicated to logging. Would be cost effective, would give you an order of magnitude more resolution and wouldn't compromise the control side.

Raspberry Pi , ohh
It's better to use STM family board.

[r2fpl]

Hi r2fpl,


I was watching your video and can't understand what you are saying (not sure what language you are speaking). But one of the things I did notice is that the majority of the windings on your stator look burned out! They look dark and blackened where they come out of stator slots.


Maybe you can shoot a close-up video of the stator to confirm. From what I can see it almost certainly looks like they are burned out.


PmgR

Hi PmgR,

This is illusion like burned out. Colour enamel is deep. Wire is ok. This some resistance i checked again for confirm.

[Jeg]

pmgr

Hi pm.
I just finished my stator build and i measured my coils inductances. It is L=7.52mH per coil. Each coil (22 awg) is of a 22.5m length (73T) and this gives me a 1,1 Ohm resistance. The maximum frequency according the equation is about 25Hz. So i wonder if there is any trick that i can do so to raise the frequency up to 50Hz. Any idea?

Regards
Jeg

ps. In resistance calculator i measured just the ohmic resistance and not the reactance of the coil. Reactance at 7,52mH and 50Hz is 2.3 ohms. If i add it with the ohmic resistance then i am again in the right range. But is that a valid consideration?
Thanks

[r2fpl]

Why no fields in this places ?

You must compare it with the video part 3 or 4 by Pierre