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Madness
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Posted: 02 January 2018 at 9:00pm | IP Logged Quote Madness

That's a tease, is it something that we can replicate?

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DaveP68
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Posted: 03 January 2018 at 5:51am | IP Logged Quote DaveP68

Use a 3 phase brush less dc motor controller board. Thing is the board shown has a 320 VDC bus to drive the star motor in it's factory standard configuration.

A bus voltage that high is "Dangerous to play with" if you don't have my back ground/knowledge of F&P smart drive product. There is no transformer on that board to provide isolation!

By one of these off Ebay for $39.99 USD + Shipping
48V 1500W Electric Bicycle E-bike Scooter Brushless DC Motor Speed Controller

Then rewire the stator to 6x 2c and you be able to replicate what I've.

No fancy tricks here making something like this. The hard part is doing all the math with the data and turning it into graphs etc

The one thing that surprises me is no one else has tried this on here?

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Madness
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Posted: 03 January 2018 at 6:49am | IP Logged Quote Madness

I have "played with" hundreds of F&P boards, guess I will have to just see what I can workout myself.

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DaveP68
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Posted: 03 January 2018 at 9:47am | IP Logged Quote DaveP68

It's an easy set up to do if you know how the boards work. Use a Phase 7 motor controller with white RPS unit, part # for board is 420904 (most reliable one ever produced). Also need a lid lock when running in spin mode and 2x 60 ohm inlet valve coils connected or you will get a fault code 49 on start up.

Once you've got it set up you will good to understand how to run in diagnostic mode when the module is driving the motor and be able to read that data.

If you have another way to measure RPM, then you can skip the diagnostic mode while it is running.

To run the motor in spin mode as a VFD you need to full the motor controller into thinking it has a bowl sitting on it's shaft. Start the spin mode complete a manual bowl check, once it has passed will run from 23 - 92 RPM and stay dealing there for 12 seconds. Then it will step up from 92 - 270 RPM with no load.

Any other question?

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Madness
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Posted: 03 January 2018 at 11:30am | IP Logged Quote Madness

Thanks, so 270 RPM is as far as it will go? Have you tried a spindle motor VFD?

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Posted: 03 January 2018 at 12:45pm | IP Logged Quote DaveP68

The highest torque is from 23 to 270 RPM. It can do 3 other speed steps, from 270 to 320, then 320 to 670 & highest is from 670 to 1000 RPM. What I'm saying is the torque drive is reduced above 270 RPM but modifications can be made to over come that limitation if needed.

At this stage only interested in the 92 - 270 RPM range as it can simulate a range 3 - 7 or even up to 8 m/s of wind speeds for small wind turbines up to a diameter of 2.8 m. The peak output power of up to 400+ W allows some good number crunching to be done.

Haven't tried a spindle motor VFD, looks a slick piece of kit.

Will be on the cards as an upgrade, once I get tired of using my home built VFD system made "free of charge" from scrapped washing machine parts

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