Need help with product selection and hook up

Jerry,

Thanks for posting on the MD forum!

BLDC only offers max 100V drivers at this time. For 300-800V you would need an independent gate driver IC such as this:

http://www.ti.com/power-management/gate-drivers/half-bridge-drivers/overview.html

Regards,

-Adam

Thank you Adam, that's very good information.

Because I'm not an engineer but do have a background in electronics and electrical applications - this is a new area for me and I try to absorb as much knowledge as I can. I'm trying to complete this project but I can't afford to make a mistake. These parts are pricey and I wouldn't want to burn any on of them up.

I'm saving all this information and when I gather enough and feel confident I'll make a purchases and give it a go.

Thanks again.   

Jerry,

Glad to help and I understand.

If I have answered your questions for now, please click the "This Resolved My Issue" green button, it helps us a lot.

Regards,

-Adam

Although this is great information and helps me further, I'm still unsure as to which devices I need to accomplish my goal. And I would still need assistance with the hook up

Jerry, 

I will transfer your post to the group responsible for the higher voltage devices, the post will not move.

Regards,

-Adam

Thank you Adam, you have been very kind and helpful. I think I will eventually get the information I seek - there seems to be a lot of people here willing to help. Thank you once again.

Jerry,

We are the group responsible for gate drivers. We cannot help with controller and PC hookup like you requested, thats out of our area.

However, we can still point you to some good starting points. You will need (isolated) gate drivers in your design and we have a lot of reference designs using our parts that you might find extremely helpful.

Let me start out by recommending this 3-phase inverter reference design with UCC23513 http://www.ti.com/tool/TIDA-010025

TI's reference design guide will go in depth about each system PCB layouts, BOMs, Schematic, etc. We really recommend to take a look at these, I think they would be very informative for you in terms of the full design.

Ti also has a motor drive applications site located here. Its a good place to get started.

http://www.ti.com/applications/industrial/motor-drives/

And the link below has a lot of reference on motor drive designs:

http://www.ti.com/applications/industrial/motor-drives/reference-designs.html#search?applid=120,907

I hope this helps. If this has answered your question, please let me know by pressing the green button. Otherwise, let us know if you have more questions.

Best

Dimitri 

Thank you Dimitri James for your response and taking time with me to try and help me. I have been assigned to several people here at TI and everyone is trying to answer my questions.

I am not an engineer and although I have a background in electronics I am an electrical instrument tech. and do maintenance on process controls at a chemical plant.

This project I'm trying to put together has never been done before and is looked at by most all electrical engineers as impossible. I on the other hand believe it to be possible and have seen a prototype running.

I'm using a 3 phase 12 pole(36 coils) BLDC  drum motor that has been re-purposed  to drive a generator. The theory is to use a high voltage DC pulse 400 to 800 volts at high frequency 25 to 30 khz - basicly all voltage and very little current. Like radio RF voltage to drive the drum motor. By controlling the voltage and/or the frequency will adjust the speed and torque of the drive motor. I have this motor coupled to a 50 kw 220 VAC generator. My intention is to have it "Self-run" by feeding back the small amount of power to supply the drive circuits.  This is a link to the motor I'm useing and wanting to drive -

https://encompass.com/item/8174994/SMG/DC96-01218E/?gclid=CjwKCAjwvZv0BRA8EiwAD9T2VQShEyTBd0NBYZ_hmxLFD__ARUCAZdw4k8DqZ3fJmYM0JREqdEN6dBoCdaEQAvD_BwE

I've inserted a picture of the package I've put together - Bottom line is that I really don't know what TI control devices are the ones I need to drive this motor to achieve 1800 rpm and hold at all loads. I'm hoping TI has someone that can ponder this problem and suggest a drive system that will work to spin this motor. Also if you could copy my home email with all replies at jlsmith86@cox.net I would be grateful.

Please see post below. Thanks.

Thank you Dimitri for your response. I have had communications with several people at TI all trying to help me with the application I'm trying to put together. And thanks to all of them, by the way. People at TI are really trying to help. 

How ever the suggested devices so far come up short of what I'm after. Your DC drives systems, as far as I can tell, only go as high as 100VDC. I'm only interested in a DC drive (Not AC)

Ultimately I'm trying to put together is a 3 phase, 0 to 800 VDC (variable) pulse drive at a frequency of 25khz to 35khz (variable) from a single DC power supply. Current is not really a concern as it would be ideally as low as possible. Less than 5 amps. I have the ability to supply a position sensor if needed. A brake is not required. The 3 phase BLDC motor I'm using, if driven by such a system is capable of developing up to 200 pounds of torque. Which is more than what I need to drive the generator unit I'm wanting to turn at 1800 rpm.

I have no idea if TI has such a system. That is why I'm trying to ask the experts at TI.

Another option would be the ability to amplify the output of your 100 VDC drive units up to the desired 800 VDC max - either way the final input to the BLDC motor would have to be what is listed above.

If TI doesn't have anything like what I'm describing, I suggest your R&D dept. get busy and develop it. In China they are already working on this but as yet have nothing to bring to market. This will be a new way to drive DC motors with very little consumption of electricity. 

Hi, Jerry,

I think the best reference we have for you here at TI is the reference design Dimitri referred you to.

UCC23513 http://www.ti.com/tool/TIDA-010025

This could be a starting point for you, and then you could develop custom code to do different modulation techniques. 

Unfortunately, I don't think we have more to offer you at this time.  Good luck with your project.