Filter on current sensor input

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joromy
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Filter on current sensor input

Post by joromy »

Having problems with noise from the ABS circuit, possibly trigger overcurrent. Goes away if ABS is disconnected.
ABS active is connected to IN_BMS input for derating REGEN.

What is max recommended Hz for the input filter on IL inputs, without compromising the real current sensing?
Is there any fitering in software?
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Re: Filter on current sensor input

Post by johu »

In sine version filtering mainly affects over current detection speed. In FOC version also filter delay must be taken into account, but I guess it will work down to 10-20kHz
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joromy
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Re: Filter on current sensor input

Post by joromy »

It is sine version.
I have 15kHz, so It may be better to filter the ABS circuit.
Thomas A. Edison “I have not failed. I've just found 10,000 ways that won't work"
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