ACIM MOTOR SPEED CANNOT INCREASE

[Omer Ab]

I can't increase the motor speed beyond a certain point.

For example, when using the ST Motor Pilot interface, I set the Speed Reference variable to 2500 RPM, and the Mechanical Speed reaches approximately the same value (2495 RPM). However, when I increase the Speed Reference beyond 2500 RPM, the Mechanical Speed does not increase and remains the same.

MCU: STM32G431RB
Power Board: STEVAL-IHM023V3

NOT :I increased the motor's nominal current using MC Workbench, but I didn't notice any change in speed.

[VERSION]: MCSDK6.3.2 (latest version for all tools)
[TOOL]: MC WB
[DETAILS]: See above.
[EXPECTED BEHAVIOR]: Increase in motor speed
[HOW TO REPRODUCE]: See above.

Best regards.

[Omer Ab]

@STuser2 Hi
Where can I find or monitor the modulation index value in the interface?

[STuser2]

/* MMI Table Motor 1 MAX_MODULATION_100_PER_CENT */

#define MAX_MODULE 28000

parameters_conversion.h file

28000 i used but it can go higher as well.

[Omer Ab]

@STuser2 
Thanks for fast reply

Max modulation value is 32,439 can we raise it even more?

[STuser2]

The maximum is 32767 you can try over modulation. I don't know the exact root cause I am telling based on my experience so you can decide to follow or not.

[Omer Ab]

@STuser2 
I will try that. Thank you very much for your help!

[Omer Ab]

@STuser2 @Floflo 
I tried it, but I didn’t notice any difference.