Obtaining voltage ripple in simulink

Is it possible to obtain a voltage waveform ripple in a simulink model, using simulink blocks? If yes, how?

[Fangjun Jiang]

What type of waveform are you looking for? "ripple" is just a generic term, isn't it?

[NAFIS MUHIB NOUSHAD]

no,you may use simscape for that

Answer 1

[Ambe Harrison]

Mr Bodhisatya Chouli use FFT os simulink to do harmoonic analyisis. That is the tool used for ripple content analysis. You can find it in the Powergui Block of Simulink

Answer 2

[Bodhisatya Chouli]

Can you obtain voltage and current ripple for these two models. I need to prove that 4th order boost (one with an extra low pass filter) converter has less ripple as compared to 2nd order system/

Answer 3

[Mathan]

% MATLAB Code: Ripple Content Calculation

clc; clear; close all;

% ----- Example Output Voltage Waveform ----- % Simulate a rectified (pulsating DC) signal t = 0:0.001:0.1; % Time (s) Vdc = 12; % Average DC voltage (Volts) Vr = 2 * sin(2*pi*100*t); % Ripple voltage (AC component, 100 Hz) Vout = Vdc + Vr; % Total output voltage

% ----- Calculate Ripple ----- Vdc_measured = mean(Vout); % DC component Vr_ac = Vout - Vdc_measured; % Remove DC part Vr_rms = rms(Vr_ac); % RMS value of AC component ripple_percent = (Vr_rms / Vdc_measured) * 100; % Ripple content %

% ----- Display Results ----- fprintf('Measured DC Voltage: %.3f V\n', Vdc_measured); fprintf('Ripple RMS (AC part): %.3f V\n', Vr_rms); fprintf('Ripple Content: %.2f %%\n', ripple_percent);

% ----- Plot ----- figure; plot(t, Vout, 'LineWidth', 1.5); xlabel('Time (s)'); ylabel('Output Voltage (V)'); title('Output Voltage with Ripple'); grid on;

Answer 4

[Mathan]

Measured DC Voltage: 12.00 V Ripple RMS (AC part): 1.00 V Ripple Content: 8.33 %

Answer 5

[Mathan]