Smps Nonlinear Carrier Controller

[D from BC]

I found this on:
http://ece-www.colorado.edu/~maksimov/apec98-3.pdf
It's on page 7 and a large signal model on page 9.
The benefit is no power stage damping.

How does a smps nonlinear carrier controller work?
Can anyone spare a nonlinear carrier controllers for dummies
explanation?
Or a link to some better reading.
D from BC

 

[Terry Given]

I found this on:
http://ece-www.colorado.edu/~maksimov/apec98-3.pdf
It's on page 7 and a large signal model on page 9.
The benefit is no power stage damping.

How does a smps nonlinear carrier controller work?
Can anyone spare a nonlinear carrier controllers for dummies
explanation?

yeah, Dragan did, in an older paper

IEEE trans power electronics, alas cant remember which one.

Or a link to some better reading.
D from BC

heres an example. Run a DCM flyback converter from a full wave rectified
supply (no cap).

run it at constant on time

know Vin = Lp*dI/dt

dt = constant

Lp = constant


dI = Vin*(dt/ton) = K*Vin

so input current peaks follow |sin| envelope. voila, control-free PFC

the NLC method uses an analogous approach. write down the equations for
input current as a function of Vin, D then solve for D

Cheers
Terry

 

[D from BC]

yeah, Dragan did, in an older paper

IEEE trans power electronics, alas cant remember which one.


heres an example. Run a DCM flyback converter from a full wave rectified
supply (no cap).

run it at constant on time

know Vin = Lp*dI/dt

dt = constant

Lp = constant


dI = Vin*(dt/ton) = K*Vin

so input current peaks follow |sin| envelope. voila, control-free PFC

the NLC method uses an analogous approach. write down the equations for
input current as a function of Vin, D then solve for D

Cheers
Terry

Thanks for the kickstart...
D from BC

 

[Terry Given]

Thanks for the kickstart...
D from BC

If I run across the paper I'll post the reference. Im just too lazy to
scan thru a gazillion professional comics

Cheers
Terry

 

[Fred Bartoli]

Terry Given a écrit :

If I run across the paper I'll post the reference. Im just too lazy to
scan thru a gazillion professional comics

IIRC the paper is in the same directory, which is (was) browsable (???).