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Big Inrunner - Noisy In FOC Mode

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skeaux
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Big Inrunner - Noisy In FOC Mode

Howdy y'all. 



Trying to drive a large inrunner (rotor diameter 320mm, 42 magnets, so 42 poles) with a Flipsky FSESC 4.12. Updated to latest firmware and running in FOC mode.



I was surprised with the level of noise when running in FOC mode, which I'd heard was supposed to be fairly quiet. Running at max RPM at 55V (~900rpm), it's heckin' noisy. I've linked a Youtube video of the noise.



Is this normal noise for FOC or have I done something wrong?

inb4 you're running in brushless DC mdoe - I'm not. I couldn't get it to work in BLDC. 



Any help appreciated!

https://youtu.be/1UKrdppzBoY

district9prawn
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Joined: 2018-04-26 12:18
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It sounds normal to me. And the motor isn't exactly silent when it's spinning unpowered at the end. Bldc mode is much noisier again.

skeaux
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Last seen: 4 years 1 month ago
Joined: 2020-03-02 02:55
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Thanks for the advice; I'm new to this so it's hard to gauge what's expected and what's malfunctioning.