Inverter (SiC) with 400V DC link

Ujala_MG

Do you have any existing design for an inverter (15kW or higher) that can be operated with a 400V DC bus?

Otherwise, if we use 650V SiC modules, do you have any recommendations about modifying an existing inverter design to work with 400V DC bus voltage to generate 15kW to 25kW power value?

Forum_Moderator

Thank you for your post, it has been approved and we will respond as soon as possible.

TBhatia

Hello Ujala_ MG,

We currently do not have a design with 650V devices for an inverter with a power rating of 15kW or above. The maximum power we have a design for is 6.6kW with 650V devices and you can locate that design here:

https://www.wolfspeed.com/products/power/reference-designs/crd-06600ff065n-k/

Can you please tell us about your application a little bit more? Are you looking into a single phase or a 3 phase inverter? It is possible to operate at 400V DC link to get 15kW output but the topology and device selection will be critical that we can help you with.

You can also check-out our online simulator that you can use to simulate your system conditions and topology and choose a device that works best for your application:

https://www.wolfspeed.com/tools-and-support/power/speedfit/

Thank you!

Ujala_MG

Thank you!

We are looking for a three-phase inverter for motor drive application and we want to use 650V SiC devices.

Would "SpeedVal Kit" be suitable for testing up to 15kW?

Julius_R

Greetings:

The Speedval kit would be ideal for testing 650V devices up to 15kW in a three-phase inverter topology. The Speedval three-phase mainboard supports DC bus voltages up to 900V and phase and DC bus currents of up to 40A. There is an available NXP control card which contains motor control firmware and a GUI which allows you to select the pwm frequency, deadtime, AC output voltage etc. or you can use your own controller. There is an online configuration tool to help you select the components that you need and I am also listing them below.

Our online simulation tool, Speedfit, would be a great place to decide which power daughtercards are the best fit for your application. There are many gate driver cards to choose from which contain various features such as desat/overcurrent protection, variable drive strength, etc. Please let me know if I can be of furthur assistance.

1. Three-phase mainboard
2. Power daughter card (x3)
3. Gate driver card (x3)
4. NXP controller card (optional)

Julius

Ujala_MG

Thank you for the information!
Please let me know what options of TI C2000 control cards you can provide with an adapter? 

Do you have TMS320F28035 ( CC2803X ) control card with an adapter and are there any example codes for this control card for motor control?

Julius_R

There is a TI adapter available which supports the TMS320F280039C control card. At this time, the only firmware we have available is for the NXP controller so you would have to create your own code for the TI control card.

TBhatia

Hi, I hope that this answered your question. I will close this discussion for now but if you have a follow up question, please "Start a New Discussion" and we would be glad to support you further.