Control strategy for CRD-30DD12N-K

gkim

Hello,

With respect to the reference design of CRD-30DD12N-K, I wonder which control strategy is employed for the three-phase interleaved LLC DC/DC converter.

Would you please provide some information or document for its control strategy?

Thank you for your consideration.

With regards,

GKIM

TBhatia

Hello, thank you for your message. A member of our technical team is looking into your questions and we will respond shortly.  

jshao

Hi GKim,

The control of this 3 phase interleaved LLC DC/DC is typical LLC control, frequency modulation. Since it is 3 phase, there is 120 degree phase shift in each phase. Sorry we don't have more document for control, since we just follow the standard LLC control method. There are quite a lot papers about this.

Thanks,

Jianwen

gkim

Hi jshao,

Thank you for your review.

Would you please share a few paper titles that you think are most relevant to the standard LLC control method you follow?

Thank you for your consideration.

With regards,

GKIM

jshao

This one:

(PDF) Unbalanced Three-Phase LLC Resonant Converters: Analysis and Trigonometric Current Balancing (researchgate.net)

and this one:

https://ieeexplore.ieee.org/document/7855520

and many on single phase LLC design

gkim

Hi jshao,

Thank you for your review.

I have found that the IEEE paper for the trigonometric current balancing is very helpful.

Meanwhile would you please share a few paper titles that you think are most relevant to the output voltage control you follow for CRD-30DD12N-K ?

Thank you for your consideration.

With regards,

GKIM

jshao

A SiC Based 30kW Three Phases Interleaved LLC Converter for EV Fast Charger.pdf

Hi Gkim,

Please see attached paper from our team. Please check some reference papers at the end of paper. Hope that will help.

Thanks,

Jianwen