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An1017A application note microchip

electronicsLearner77

Jul 2, 2015
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The AN1017A application note is the sinusoidal control of BLDC motors. I am implementing it but i have few questions. The source code provided for that refers to two terms phaseoffsetCW and phaseoffsetCCW. I am confused with this. The document says this is added for symmetry of sine wave can someone please explain me this?
 

kellys_eye

Jun 25, 2010
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Looks like you have to adjust the phase of the driving waveform to maintain maximum current flow in the windings as the speed increases (lag caused by inductive loading) - this is the offset value (in clockwise and counterclockwise directions).
 

electronicsLearner77

Jul 2, 2015
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Thank you for the reply. Is it possible to give some detailed explanation or any link explaining this. Please advise.
 
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