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Smps Nonlinear Carrier Controller

D

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
 
T

Terry Given

D said:
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

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
 
T

Terry Given

D said:
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
 
F

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 (???).
 
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