NeilP
1 GW
Just picked up a 3 wire sensor-less BLDC motor from a Zanussi washing machine today and fired it up with a Xlyte 18 FET sensor-less controller.
And yes it does run...but not to a usable degree. I ran at the max voltage I could with the sensor less controller I have..so 98 volts. I am guessing a timing issue. but with no magnets on the rotor, adding halls would be another thing again. Video uploading now to You Tube.. for the second or third time...f ing net connection keeps going down after 20 min of uploading
...update...bollocks to You Tube..smaller version going up to Facebook...frock...even that failed...bloody internet connections..as soon as the kids come home from school the internet just crashes.. why cant our f i gtelecome company supply a decent service .. Am now going to try sending it to the phone and publishing it via the 3 G mobile network.. Crazy that I get better speeds on the mobile than I do on the fiber optic landline
Here are a few abservations
It is marked as 195 volt 3A RMS 300Hz 17500rpm.
Coils on outside, rotating part is the centre shaft, as expected.
24 'sets of windings, three wire as expected
No hall sensors
But here is the thing I was not expecting...the rotor is totally un magnetised. It won't even pickup small iron filings.
So is it somehow relying on induced magnetism? eddy currents ??? ....or is the unit at the end that I assumed was a speed monitor output...2 brown wires ....see pictures...something else.
And yes it does run...but not to a usable degree. I ran at the max voltage I could with the sensor less controller I have..so 98 volts. I am guessing a timing issue. but with no magnets on the rotor, adding halls would be another thing again. Video uploading now to You Tube.. for the second or third time...f ing net connection keeps going down after 20 min of uploading
...update...bollocks to You Tube..smaller version going up to Facebook...frock...even that failed...bloody internet connections..as soon as the kids come home from school the internet just crashes.. why cant our f i gtelecome company supply a decent service .. Am now going to try sending it to the phone and publishing it via the 3 G mobile network.. Crazy that I get better speeds on the mobile than I do on the fiber optic landline
Here are a few abservations
It is marked as 195 volt 3A RMS 300Hz 17500rpm.
Coils on outside, rotating part is the centre shaft, as expected.
24 'sets of windings, three wire as expected
No hall sensors
But here is the thing I was not expecting...the rotor is totally un magnetised. It won't even pickup small iron filings.
So is it somehow relying on induced magnetism? eddy currents ??? ....or is the unit at the end that I assumed was a speed monitor output...2 brown wires ....see pictures...something else.