CAPACITORS ON BOARD CONTROL ENGINE

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CAPACITORS ON BOARD CONTROL ENGINE

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andre_denzel
Contributor I

Ever board to control BLDC or PMSM motor, have three capacitors in paralel.
I did not understand their work, I noticed they always capacitance of 220uF and are polarized.....

I will change the capacitors because I working now in a version custom.

This capacitors are in green on image


My main doubts are:

1) What are these capacitors for in circuits ???

2) How do I calculate capacitance according to my custom circuit?

3) What is influence ESR from on board?

Best Regards01.jpg

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