please what is the difference betwenn small-signal and large and avearge dc converter

Thread Starter

abdou_abdou

Joined Sep 23, 2022
4
hi dear engineerings I have a question can someone give me what's the difference between these 3 topic
small-signal-model and average -signal-model and large-signal-model
I'm trying to design a boost converter and buck-boost via Matlab Simulink
 

Thread Starter

abdou_abdou

Joined Sep 23, 2022
4
What do the terms you are researching suggest to you?
I wanna designed buck-boost converter with matlab and check the stability with lyapunov
but the pblm how I can get the gain I saw 3method by transfer function or state space with small signal model
I wanna to know whats is the diff between small-signal-model and large-signal-model as 1st step
 

Papabravo

Joined Feb 24, 2006
19,288
I wanna designed buck-boost converter with matlab and check the stability with lyapunov
but the pblm how I can get the gain I saw 3method by transfer function or state space with small signal model
I wanna to know whats is the diff between small-signal-model and large-signal-model as 1st step
As the name suggests a small signal model is for a system that operates at or near an established DC operating point. An example would be a Common Emitter (CE) class A audio amplifier. The input consists of "small" AC perturbations about the operating point such that the system response is linear or so close to linear as to not be able to detect the difference. Does that help?
 

Thread Starter

abdou_abdou

Joined Sep 23, 2022
4
As the name suggests a small signal model is for a system that operates at or near an established DC operating point. An example would be a Common Emitter (CE) class A audio amplifier. The input consists of "small" AC perturbations about the operating point such that the system response is linear or so close to linear as to not be able to detect the difference. Does that help?
thank you so much
 
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