1. E

    Help me understand this BEMF measurement schematic

    This part of the schematic from the STSPIN32F0251 EVB allows the user to select between various commutation inputs to operate a BLDC motor in sensored and sensor-less modes. Can anyone help me understand the BEMF measurement part? Also, how is that all the inverting input of the opamps come from...
  2. M

    position of hall sensor in bldc motor

    Hello all, I'm trying to create bldc motor, and have some problem regarding position of hall sensors. It is 12 pole winding on stator, and 8 pole magnets on rotor, and 3 hall sensors. But I am not sure where to locate this 3 hall sensors... i tried locate them on every 120 degrees, but i'm not...
  3. S

    Solution for Inductive spike from BLDC motor

    Hi, i want to build regenerative system in my electric scooter, i try to rectifying back emf of three phase wire and convert it with dc/dc converter then save the power in supercapacitor. But when i try this, my mosfet was broken, because the inductive spike from bldc motor, for several time it...
  4. Lawrence White

    Struggling to get this MC33035 to work, can anyone help at all?

    Afternoon everyone, Getting rather frustated with somethign that seems straightforward to me... I have researched and corrected any mistakes I have made, done a rebuild several times, but can never get this thing to work. draws about 10mA on a 12V test voltage and thats it. nothing seems to...
  5. C

    Areas of improvement in Field Oriented Control (FOC) ?

    Hi everyone, I am trying to a project based on FOC and BLDC motor using Simulink. I have been looking at material explaining how to use FOC with Simulink but from what I have seen there is an automatic PID autotuner. So is there really anything that can be improved from FOC in MATLAB ? Thanks...
  6. C

    FIELD ORIENTED CONTROL DISSERTATION

    Hi everyone, I am a final year student who is making a dissertation on Field-Oriented Control (FOC) with a BLDC motor. I am having the issue that with the virus outbreak I have had to modify a lot how to carry out my dissertation. As a result, I do not know what to write about anymore. I would...
  7. C

    BLDC motor torque control using current measurement

    I would like to control 18V BLDC motor of battery powered drill. What I want to do remake the drill to nut runner (torque wrench), so I need to sense a motor current which is proportional to motor torque. My controller will include microcontroller. Here are some questions: How battery voltage...
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