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Re: Dual Active bridge


 

On Tue, May 6, 2025 at 05:14 PM, <arhamishtiaq42@...> wrote:
Sorry, I uploaded the wrong file earlier
Good to know.

My desired output is 150?V, and I¡¯ve noticed that changing the transformer inductances is affecting the output voltage.
As it must.

Currently, if I set the transformer values as L1 = 110??H, L2 = 250??H, and L3 = 1??H, the primary-side current becomes too high.

How much is "too much"?

Since I¡¯m designing a 500?W Dual Active Bridge (DAB) converter, I expect the primary current to be around 8?A, because

I'm supplying 500?W at 100?V input:

So therefore it provides less than 500 W to the load, right?

Iavg=P/Vin=500/100=5 A

IRMS?¡Ö1.3¡ÁIavg?=6.5¨C8?A?but it¡¯s exceeding that.

But some of that current into the primary represents reactive power, not real power.

Also, by ¡°steady state,¡± I mean that the average current should not be zero

Um, we are not speaking the same thing.? The average current must be zero.? Transformers do not pass DC.
?
Andy
?

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