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Single phase vs three phase driver (InstaSPIN-FOC)

Maria Todorova
Guru 13185 points
Other Parts Discussed in Thread: MOTORWARE, TMDSHVMTRINSPIN, CONTROLSUITE

Hello all,

We will use InstaSPIN-FOC MCU (F28027F) for our motor controller (our concern is for High Voltage 230V and  400V).

We will make controller device to control single phase motor and three phase motor (it will be two separate devices).

My questions are:

Is InstaSPIN-FOC (MotorWare) project can be used for single phase driver (to drive single phase motor)?

If yes, which parts of firmware modules should I concern about (ADC, PWM, etc)?

If no, which example project that I can use as reference for single phase motor?

What development kit I can refer to as reference design for single phase motor controller?

If any document that you can suggest, I appreciate it.

Thanks!

Best regards,

Maria

  • 0
    Guru 192875 points

    Hi Maria,

    I'm not much into motors, but will start working on BLDC kit soon. Secondly, if you check the basic working principles of both single and 3phase; I don't think there should be any problem in implementing single phase motor algo using the same kit :)

    About the implementation part, wait for a TI employee to shed some light.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Guru 13185 points

    Hi Gautam,

    Thanks for your reply. I am not much on motor too. So I really need some advices.

    I am using TMDSHVMTRINSPIN now for my study.

    However I don't think I can use this kit (this kit is for 3-phase motor) to drive single phase motor. I think at least we need to change the inverter (don't we? or we can use the same? I will investigate further about this)

    But about the firmware, can InstaSPIN-FOC (MotorWare) project, FAST estimator, be used?

    Any suggestion, or documentation?

    Thanks!

    Best regards,

    Maria

  • 0 in reply to Maria Todorova
    Guru 13185 points

    Hello again,

    To be more specific about what we need, we need to develop single phase controller to control Capacitor Start/Run Induction motor.

    Any idea whether InstaSPIN-FOC can be used for this or not? Also is there any reference design?

    Thanks in advanced!

    Best regards,

    Maria

  • 0 in reply to Maria Todorova
    TI__Prodigy 690 points

    Maria,

    We have not tried the InstaSPIN-FOC observer on a single phase motor we have only used it on three phase induction and PM motors.  I have run a single phase induction motor before but only by using a V/F controller.  I controlled the starter winding with a quadrature wave to control starting torque and to smooth out the single phase oscillating torque. 

    To run the single phase motor with our three phase inverter, you will only need to use two of the half bridges, say phases U and W, with the single phase motor winding spanning between U and W.  I would say that this scenario would only be good for testing if your ideas work and then I recommend making your own inverter specific for single phase. 

    We do not have any example projects in MotorWare for controlling single phase motors.

    Regards,

    Eric

  • 0 in reply to Eric (ASP) Thomas
    TI__Guru** 119560 points

    I do know of a clever company who has figured out a way to use FAST for single phase / two phase / split cap induction motors.  This will allow for upgrades to the system without replacing the inverter and still driving massive energy savings, especially with PowerWarp.  

  • 0 in reply to Eric (ASP) Thomas
    Guru 13185 points

    Hello Chris and Eric,

    Thanks for your responses!

    So in fact, we can use FAST for single phase motor (in clever way) - correct me if I am wrong.

    About V/F, is there any example code in Motorware or Controlsuite? Or any reference from TI?

    Eric (ASP) Thomas said:
    To run the single phase motor with our three phase inverter, you will only need to use two of the half bridges

    Is it really possible? I was also thinking that maybe it is possible to not change the inverter, but I was also not sure how FAST estimator would go with this.

    I will have it in mind to test it.

    Thanks and keep support!

    Best regards,

    Maria

  • 0 in reply to Maria Todorova
    TI__Guru** 119560 points

    Maria,

    Let me be clear. We at TI are not offering support for using FAST with single phase / split cap ACI motors.  That is not in our plans.

    However, I personally do see how this could be useful for an inverter product to be able to control single phase motors.  Energy savings w/o updating the motor to three phase.  As mentioned, I do know of a clever company working on such things and I wish them great success!

     

  • 0 in reply to ChrisClearman
    Guru 13185 points

    I see, thank you Chris for the clarification!

    Best regards,
    Maria