BLDC DC Bus current waveform?

Thread Starter

Tamás Fegyvári

Joined Sep 26, 2017
12
Hi!

I would need some clarification with a BLDC DC bus current.(Marked With IL on the picture)
I_BLDC.png
The motor is a BLDC with trapezoidal commutation and 20kHz PWM.
I beleive that current is the 20 kHz PWM with an amplitude of the maximum current of the motor. Is it right or I misunderstood something?

I really appreciate any help.
Thank you!
 
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