Digital zero-voltage SPS with PID contrlol and feed forward

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Hi all.

I´m thinkin of building a SMPS for private needs and i want a SMPS. As I´m an automotive engineer I have a lot of interest in control systems etc so I´m thinking of a digitally controlled SMPS.

Basic design is:

230V in - rectifier - Zero-voltage half/full/quasiwave switching MOSFET/transistor -~100V DC output.

The system should be controlled via a digitally PID controlled current-mode controller. Best would be if it had instant current feed-forward control but also a voltage control that works over time.

Output voltage should be in the order of 50-120V.

as you all understand this PSU will be HOT! on-line for my private needs. But I guess there should be no difference in the design if one instead chose to use a transformer for off-line applications. It's just the wiring who will change sligthly?

Anyways, have other people though of a similar topology/design? Is there already a nice availabe microchip for this kind of operation or is it best to program my own PIC computer ? (That won't be a problem if it's the best way).

I´m fishing for tips advice and hopefully help here as I´m not an experienced electrical engineer. Please let me know what you think of the concept!!

Thanks in advance
Kind regards
Michael
 
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