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Block waves with FOC

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spacemango
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Block waves with FOC

Hello! I looked at the phases in an oscilloscope when running the motor with FOC. I see block waves and not sine waves. Does anyone know what could be the cause? 

TheFallen
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Post a screen capture and maybe you'll get a response.

mihota
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I am having the same problem. It looks like a PWM with varying duty cycle instead of a sine wave

TechAUmNu
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Just because its in FOC mode, doesn't change the fact that its still outputting a PWM signal, unless you have some big filtering on the output to smooth the pwm out you will see it as that.

Lisa1812
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The sine wave is also the most important special case of the periodic wave. ... In this sense, sine waves are the pure, basic building blocks of all waves. find a word