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Originally Posted by BrianG
OK, thanks! That makes sense. I guess I just didn't understand the statement:
My confusion stems from the diode aspect. I know the diode is built into the FETs. So, if the FET simply shorts the phases, how can you eliminate the v drop of the diodes?
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Diode conducts in one way only, if you close corresponding FET then you eliminate voltage drop associated with diode. ESC knows exact rotor position and then polarity of the BackEMF, this allows to use FET's instead of diodes to do the rectification.
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