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TMS320F28069M: InstaSPIN for dual motor EV Application?

stomp
Genius 4725 points

Part Number: TMS320F28069M

Hi,

I've had two years now with making InstaSPIN enabled products, all in the ~1 KW / 310 VDC category, many great success stories.. Also many vaporized MOSFETS :)

We are specifying a prototype now that needs to control two 50 KW BLDC's in a vehicle and provide some higher level control algorithms such as implementing a normal mechanical differential in software.

I am thinking building a sample based on Lab12c (Dual motor Sensored Velocity Control) and I have the following questions:

1. Is InstaSPIN-MOTION most suited for an EV type application (i.e. Throttle Input  -> Velocity Setpoint?)

2. Is there any application notes for using remote Hall current sensors or any specific types of encoders / resolvers that have been proven to work well?

3. With sensored operation, do we still require the same Motor ID process (Rs, L) as when using FOC?

Thanks

Stomp!

  • 0
    TI__Guru** 117210 points
    1. Yes, it can be used for EV application for sensored velocity control also.
    2. No, but it's the same as shunt resistor current sensing, and you can use any position sensor for rotor position angle input of InstaSPIN-motion.
    3. Yes, you need to run motor ID to get the motor parameters to improve the controller performance.
  • 0 in reply to Yanming Luo
    Genius 4725 points
    Hi Yanming,

    Thanks for the quick reply..

    Two more questions if I could:

    1. If I just want to use an encoder do I need FAST?, and therefore am I limited to using the TMS320F28069M part with the InstaSPIN ROM?. The reason I ask is that I'm a little nervous about the 90 MHZ on the '69M, and maybe I would like to look at a higher frequency part.

    2. Is there any application notes for using regenerative braking with InstaSPIN-M?

    Thanks
    Stomp!
  • 0 in reply to stomp
    TI__Guru** 117210 points
    1. No limitation, the F28069M is the fastest device supporting instaSPIN-motion, it's enough to run single motor.
    2. Not yet till now. Actually, the regenerative braking is dependent with instaSPIN-motion, you can add yourself code according to the used regenerative braking code.