BLDC motor fails with speed feedback error on high rmps

[BPoko.1]

I'm trying to use Motor Control workbench with BLDC motor (from orbital sander). I ran a test with motor profiler, my motor parameters are the following:

• 7 pole
• 5 Apk
• 30V
• Rs: 0.1 Ohm
• Ls: 0.022 mH
• B_emf const: 2 Vrm/krpm
• Inertia: 30 uN*m*s2
• Friction: 17 uN*m*s
• Max rpm: 11000

The motor works fine under ~8500 rpm, but above that stops with speed feedback error. With the original control PCB the motor can achieve 11000rpm, but it uses simple b-emf control.

Any recommendation to achieve 11krpm? I tried to use flux weakening feature, but didn't helped.

Thank you in advance!

[BPoko.1]

I was wrong, it must be an SM-PMSM motor. The waveform on the windings (if I spin the motor):

[Laurent Ca...]

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

Best regards

[Manoj.M]

Hi,

Even I have a very similar problem, just the motor parameters and operating voltages are different.

Have you solved this issue?

 

Thanks.