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Need Help in understanding Voltage Profile for Motor Driver Kit-P-NUCLEO-IHM002

Ram Krishan  Sharma
Associate
Posted on June 13, 2017 at 12:06

0690X00000603sKQAQ.jpg

The above is the Voltage profile for Vba and V ca here i am not able to understand the gape between the PWM signals why each of the signals are not continuous.as SPWM is embedded inside them to control the voltage as (zoomed version of Crowded portion from above figure).

0690X00000603seQAA.jpg

From the figure 1-

Frequency as it seems = 1Hz-

But same 

Frequency from Figure 2 

 = 43kHz.

What is the meaning of 1Hz and 43kHz ?

How the above waveform is able to run the motor at different speeds ?

How such SPWM Works i know only one kind of SPWM from literature as -

0690X00000607KHQAY.png

And it is continuous and have no gaps as seen in the Actual waveform ,Please Help ???

#stm32-pmsm-foc-sdk #motor #spwm #motor-control
1 REPLY 1
Laurent Ca...
Lead II

The question has been moved from the "Motor Control Hardware" section to the "STM32 Motor Control" section (the question is about the STM32 MC SDK). 

Best regards