Q2.3
.docx
School
University of Colorado, Boulder**We aren't endorsed by this school
Course
ECEN 5807
Subject
Electrical Engineering
Date
Dec 19, 2024
Pages
2
Uploaded by ConstableRamMaster5771
1.Question 1The figure below summarizes the more accurate small-signal averaged model of the CPM modulator, together with the expressions for the modulator gain Fm. As discussed in the lectures, this model can be combined with known small-signal models of duty-cycle controlled converters to obtain complete more accurate small-signal models of peak currentmode controlled converters. Question 1: What is the expression for the modulator gain Fmfor a controller that employs Ma=M2/2slope compensation? Enter the expression for Fmin terms of M_1 and T_s2/(M_1*T_s)CorrectM2/2is often a practical choice for slope compensation.2.Question 2What is the expression for the modulator gain Fmfor a controller that employs Ma=M2slope compensation? Enter the expression for Fmin terms of M_1. M_2 and T_s2/(M_2+M_1)*1/T_sCorrectMa=M2is a more conservative choice for slope compensation.3.Question 3What is the expression for the modulator gain Fmfor a converter that operates at D=0.5?
Enter the expression for Fmin terms of M_a and T_s1/(M_a*T_s)CorrectNote how the modulator small-signal gain theoretically goes to ∞if no slope compensation is applied. This corresponds to the period-doubling stability boundary. 4.Question 4Which of these statements correctly describe the effects of employing a larger slope compensation, i.e. adding an artificial ramp with a larger slope Ma?