3.3 KW LLC PI controller

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ajin
Level 1
Level 1
25 sign-ins First solution authored 10 sign-ins

 

Hi @Vinay 

This voltage compensator equation is taken from 3.3kW 52V LLC board.   This is the voltage loop which converts voltage to frequency.  Capture2.PNG

The coefficients are are calculated in this way

voltage_ctr.coeff_A0 = (kp + ki + kd);
voltage_ctr.coeff_A1 = (- kp - (2 * kd));

COEFF_A2= Kd

I have doubt about the calculation of coefficients A0, A1 and A2 which is different than normal PID loop. Can you give me the reference to know more about this fixed point compensator and I would like to know how this voltage compensator differs from normal PID loop. 

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1 Solution
Vinay
Moderator
Moderator
Moderator
50 solutions authored 100 replies posted 250 sign-ins

Hello @ajin,

Good Day!

Thanks for posting your question in Infineon community

 

Sorry for the delay in response.

 

We forwarded your query to our internal team for reference design of voltage compensator design of LLC HB converter.

We will provide a response as soon as we get an update from our internal team.

 

Please go through the  A Half-bridge LLC Converter Based on Digital Control

and 

LLC Converter Design Note

 

Thank you!

 

Best Regards,
Vinay

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2 Replies
Vinay
Moderator
Moderator
Moderator
50 solutions authored 100 replies posted 250 sign-ins

Hello @ajin,

Good Day!

Thanks for posting your question in Infineon community

 

Sorry for the delay in response.

 

We forwarded your query to our internal team for reference design of voltage compensator design of LLC HB converter.

We will provide a response as soon as we get an update from our internal team.

 

Please go through the  A Half-bridge LLC Converter Based on Digital Control

and 

LLC Converter Design Note

 

Thank you!

 

Best Regards,
Vinay
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ajin
Level 1
Level 1
25 sign-ins First solution authored 10 sign-ins

Hi @Vinay 

Waiting for your response

Regards

Ajin

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