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LAUNCHXL-F28379D: Maximum switching frequency InstaSPIN-FOC for 4 pole motor use

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: C2000WARE-MOTORCONTROL-SDK, C2000WARE

Hello,

We would like to use at our company this prototype inverter " 200kW Three-Phase Inverter with XM3 Power Module | Wolfspeed ", but since it is using the F28379D for the control part, we need to know before buying it if the F28379D InstaSPIN is capable of:

- 30khz motor switching frequency minimum 

- Sensorless operation on a 4 pole PMSM (I think from I saw in forums it is possible)

Thanks in advance,

  • Yes, the F28379D can meet the requirements you want. You need to use the software library based FAST estimator if you want to implement the InstaSPIN-FOC on F28379D.

    The detailed introduction about the software FAST library based the lab with can be found in the lab user’s guide as the link below, the guide includes a section about how to migrate this lab to the other devices and inverter boards.

    C2000WARE-MOTORCONTROL-SDK: https://www.ti.com/tool/C2000WARE-MOTORCONTROL-SDK

    Universal Project and Lab User’s Guide: https://www.ti.com/lit/ug/spruj26/spruj26.pdf

    Example lab project at the folder: C:\ti\c2000\C2000Ware_MotorControl_SDK_<version>\solutions\universal_motorcontrol_lab\f28002x

  • Thank you Luo,

    I have seen from the forum that regen braking isn't available?  I need to use my motor as a generator also.

    What happens if you apply a negative current Iq while motor is freewheeling? does it apply regenerative braking?

    Thanks a lot!

  • Yes, there is no any reference for regen braking in motor control SDK, the user should add it according to their applications.

    The dc-bus will be boosted. That depends on the user's system, we don't have more information can be shared with you about this.

  • When you say DC-bus will be boosted it means that current will flow to battery right? From what I understand, it could be deployed quite fast, a negative Iq setcurrent with a DC-bus supervision to avoid batteries over-voltage and I have my batteries charging?

    Does Motor Control SDK let you set a negative Iq command ?

    Thanks again!

  • When you say DC-bus will be boosted it means that current will flow to battery right?

    Correct. The boosted value of the dc-bus depends on the input power supply. You may take a look at the related textbooks that could have more details about this.

    Does Motor Control SDK let you set a negative Iq command ?

    Yes, you can run the motor in four-quadrant as you want, but the reference just support motor mode, not support generator mode in the Motor Control SDK.