MCU product selection guidance

Nick Price74

Other Parts Discussed in Thread: TMS320F28379D, TMS320F28035, LAUNCHXL-F28069M, BOOSTXL-DRV8301, BOOSTXL-DRV8305EVM, TMS320F28069M, MOTORWARE, TMDSHVMTRINSPIN, CONTROLSUITE, CCSTUDIO

I need an MCU that can control 2 asynchronous 230V 3pase 0.16kW motors separately through IGBT devices. supply for the IGBT devices is 320VDC

I need to keep both motors at the same RPM I can use a hall effect device on each shaft and use the pules as a feedback unless TI has a better solution.

I am new to TI instaspin and their MCU's so looking for part number as a starting point.

Also are there in development kits that can do this

Many thanks

over 6 years ago

0 ChrisClearman over 6 years ago

TI__Guru** 118000 points

there are dual motor control examples on several of our MCUs, from TMS320F28035 up to TMS320F28379D

for hardware examples you can use
InstaSPIN-FOC (sensorless) or InstaSPIN-MOTION (encoder) using
LAUNCHXL-F28069M
and either BOOSTXL-DRV8301 or BOOSTXL-DRV8305EVM

this would use TMS320F28069M on the Launchpad and you use MotorWare for software projects

0 Nick Price74 over 6 years ago in reply to ChrisClearman

Prodigy 70 points

Are there development kits that work with 230VAC 3 phase asynchronous motors, preferably IGBT.
The 2 motors are going to be used to drive a vibration plate.
If the RPM is not the same for both motors you end up with a wave effect in the vibration.

0 ChrisClearman over 6 years ago in reply to Nick Price74

TI__Guru** 118000 points

TMDSHVMTRINSPIN is a high voltage kit. This is a single inverter though.

0 Nick Price74 over 6 years ago in reply to ChrisClearman

Prodigy 70 points

I have ordered the kit.

if I need to have both motors running at exactly the same speed but separately driven which is the best instaspin-foc or instaspin-motion

0 ChrisClearman over 6 years ago in reply to Nick Price74

TI__Guru** 118000 points

InstaSPIN-FOC is sensorless
InstaSPIN-MOTION is primarily encoder based sensor (it can do sensorless)

at normal to high speeds our sensorless observer is within a few counts of a standard encoder.
at lower speeds an encoder will typically give better velocity resolution, but there are challenges in low speed control as well, depending on the resolution of the sensor

0 Nick Price74 over 6 years ago in reply to ChrisClearman

Prodigy 70 points

I was looking to use a hall effect devices on each motor 1 shaft revolution gives 1 pulse from the hall effect
motors will be driven up to 3000 RPM
the cost of the hall device is about $3 so no problem there, the most important thing in all of this is that I get no wave effect in the vibration which I will get if the motors are turning at even slightly different RPM
if the accuracy can be obtained without sensors all the better.

If not its finding an MCU that can take in the pulses from both motors and adjust the speed of one to match the other, a master slave config

0 ChrisClearman over 6 years ago in reply to Nick Price74

TI__Guru** 118000 points

sensorless will be more accurate than your hall approach

using InstaSPIN-MOTION for sensorless will let you tune the speed controller much better and simpler. Doesn't seem like you are limited by a little extra cost so I would go that direction.

0 Nick Price74 over 6 years ago in reply to ChrisClearman

Prodigy 70 points

ok thanks

does the kit come with a circuit diagram, and does it have power factor correction?

0 ChrisClearman over 6 years ago in reply to Nick Price74

TI__Guru** 118000 points

there is no PFC

for the BOOST, click on the links in my first post
for the Launchpad these are housed in www.ti.com/tool/controlsuite

for the InstaSPIN development you will also need MotorWare and www.ti.com/tool/ccstudio

0 Nick Price74 over 6 years ago in reply to ChrisClearman

Prodigy 70 points

If this is in the wrong forum please let me know which forum I should use.

I received TMDSHVMTRINSPIN-High Voltage Motor Control Kit today.

When I try to access it via the GUI I get the error message

Unable to connect to the selected target, please verify that the target is available and ready to receive connections.

Any suggestions please

0 ChrisClearman over 6 years ago in reply to Nick Price74

TI__Guru** 118000 points

did you follow the instructions for setting up the board?
see page 13 of qsg_hw_hvmtr_r1p1.pdf

if using the GUI that comes wit the kit www.ti.com/.../motorkitscncd69miso
make sure you use the 69MISO card and NOT the 27F card

0 Nick Price74 over 6 years ago in reply to ChrisClearman

Prodigy 70 points

I am using the high voltage motor control kit

it came with 2 control card

1. F2806x ISO this card boots but I can only connect the PC by using the USB on the control card. The USB on the HV kit doesn't connect

2. F2802xx Piccolo-A this card doesn't boot and I can't connect using the USB on the HV development unit

I am totally new to this kit having just received it, any help much appreciated

0 ChrisClearman over 6 years ago in reply to Nick Price74

TI__Guru** 118000 points

you purchased TMDSHVMTRINSPIN

this kit is supported by MotorWare for InstaSPIN-FOC and InstaSPIN-MOTION

you can follow the Readme First after installing and running MotoroWare.exe

Resources --> Inverters --> HVMTR EVM

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MCU product selection guidance