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BLDC motor control at 60000 or more RPM

Question asked by kharade.prashant.002 on Jul 3, 2014
Latest reply on Aug 13, 2014 by kharade.prashant.002

We are working on a Medical Respirator equipment, for which we need to control the BLDC motor up to 60,000 RPM.
 To generate a speed of 60000 RPM, Space Vector Modulation PWM waveform main/base frequency shall be 4 KHZ.
To have a smooth ripple free current/torque we need carrier frequency (Space Vector Modulation) shall be around 100kHz.

 Is it possible to generate this with coretex M4 or other controller

  • 100 khz carrier frequency by SVM (Space Vector Modulation)
  • Also at same time, it has to work on sensor less FOC as a close loop feedback for speed & to get optimum torque.
  • For this it shall probably have current feedback from 2 motor coils.
  • Also some other functions to satisfy respiratory system

Please provide input