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by sniper1rfa
22 Jan 2018, 16:13
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 14
Views: 19806

Re: VESC FOC for a flywheel application....

Agreed, more explanation would be helpful. That would be awesome news!

Will I need to compile a new version of VESC tool to allow configuration with newer firmware? VESC tool informs me that I can only use 3.33, 3.34, and 3.35 with the 4.12 hardware.
by sniper1rfa
15 Jan 2018, 22:45
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 14
Views: 19806

Re: VESC FOC for a flywheel application....

Had another opportunity to play with this. Running with commanded duty cycle in FOC mode. Startup is now reliable, and below about 60,000 ERPM the motor operates reliably, albeit with a small amount of hunting/wander. After approximately 60,000 erpm the motor cuts off and coasts to a halt. I keep se...
by sniper1rfa
20 Oct 2017, 23:47
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 14
Views: 19806

Re: VESC FOC for a flywheel application....

another question:

The current plots are biased - is this normal or something to do with my crappy soldering?
by sniper1rfa
18 Oct 2017, 22:27
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 14
Views: 19806

Re: VESC FOC for a flywheel application....

update: switching to 0.005ohm shunts fixed it. Starts smooth as butter now.
by sniper1rfa
13 Oct 2017, 15:15
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 14
Views: 19806

Re: VESC FOC for a flywheel application....

Easier said than done, unfortunately. OTS flat pancake style motors with 24V windings, sensors, and a kV above 400 are pretty rare and expensive (I think only maxon has one, non-stock. I have some hall sensors and will set them up with a bracket if necessary, but it's not ideal. I got one flywheel s...
by sniper1rfa
11 Oct 2017, 18:28
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 14
Views: 19806

VESC FOC for a flywheel application....

I'm attempting to use a VESC to spin up a 5lb flywheel. Motor is a T-Motor MN4004 400Kv on a 6S battery. Originally this was run using a castle creations Talon25, which worked well on a 3lb flywheel. Switching up to 5lb prevented the talon from successfully commutating, and prevented startup. I've g...
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

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