DRV8312-69M-KIT, 2MTR-DYNO for sensor driven regenerative BLDC project

Jared,

I think the motor that comes with DRV8312-69M-KIT has hall-sensors inbuilt  and definitely  both the motors can be run with space vector modulation. If you choose DRV8312-69M-KIT's motor to build 4-quad VSD drive, you will need to rely on senor-less FOC. If you prefer sensor based FOC, I would suggest to go with 2-MTR-Dyno kit because they come with encoder, as well as other neccessary mechancal coupling to build dyno set.

I am not aware of any new replacement of DRV8312-69M-KIT , can you provide details of post mentioned by you?

Best Regards

Milan-Motor Application Team

I was referring to a post by Chris Clearman at the the end of this thread, where he suggests that there may be a 'new inverter board' coming out soon. 

Okay, so is there a full evaluation kit (with inverter) that could run the motors seen in the 2-MTR-Dyno kit using encoder based control? If I buy the DRV3812-69M, it looks like I would only be able to control the Teknic motors using a sensorless method, because the pin out of the motor looks like it includes the encoder output, which begs the question, is there a different kit that is designed for the Teknic motor? Or can I buy the DRV3812-69M and modify the pin out of the Teknic motor from the 2-MTR Dyno kit so that the pinout will match the DRV3812-69M... 

As an aside, I was also wondering if any of these kits provide access to any of the unused GPIO pins on the control card? I would ideally like monitor a temperature using a thermistor into an ADC pin. 

Thanks for your help.

Hi Jared,

I believe Chris is refering to a BoosterPack for the TI LaunchPad ecosystem we are about to release. It will be for 3-phase motors (drives one motor using DRV8301) and support sensorless solutions. It should go public end of next week.

Oh okay I think I found the BoosterPack you are referring to: BOOSTXL-DRV8301, although the FETS in this booster pack are only rated for 24V. Or maybe the new launchpad LAUNCHXL-F28027 which is supposed to be released November 7th? I'm not familiar with the launchpad system, although

However, is there a different kit that is designed for encoder based control of the Teknic motor seen in the 2MTR-DYNO?

Thanks,

Jared

By 'the end of Q1' I presume you mean sometime in March 2014? That's too bad. 

I will probably go with the DRV8312-69M-KIT then, except that on the schematic I still don't see where you can access other pins on the control card besides the Hall and encoder inputs. I'm not sure that that large row of headers does, though. 

Thanks for your help.

Jared,

I can't give a date. The board was first designed about a year ago and we just haven't wrapped things up, other priorities.  I think for many customers just using two sets of Launch+Boosters would be even simpler, as you could more easily control each motor independently.  The 2MTR board will come with a single controlCARD slot so we will have the F28069MISO controlling both motors, runnign them independently.

I understand you want more pins available though, so the LaunchPad may not be for you.  The DRV8312 EVM brings all the controlCARD DIMM "pins" out to a header, you can access anythign you need.

Chris,

Alright I think I've got it. We are going to purchase a DRV8312-69M-KIT, a 2MTR-DYNO, and the LAUNCXL-F28027F with booster pack (when it comes out), run one motor from the dyno kit off of the DRV8312-69M kit using an encoder based feedback as you've said that this kit has the extra i/o that we are looking for, and use the LAUNCXL kit to run the load motor in the dyno kit via instaspin, as it is a cheaper kit and I don't need the extra i/o for the load side.

Just to be completely verbose, there appears to be a 40-pin header (J5) where I can access such pins on the controller with which I could perform an analog to digital conversion on the Piccolo, instead of relegating that to a different MCU and using SPI or CAN transmit this digitally to DRV8312 kit. Am I wrong?

In any case, thanks for your timely support! It is much appreciated.