Hi,
To create the matrix based on the Input voltage and current focusing only on the points where the input voltage switches to 400 or -400, and associating the current values accordingly, we can follow these steps:
- Identify the switching points: We need to find the indices where vin switches to 400 or -400. This can be done by looking for the differences between consecutive elements and finding where these changes occur.
- Classify the current at these points: Based on the value of the current (DABi) at these switching points, classify according to the rules you provided.
Here is the MATLAB code
t = 0:0.0000001:0.0001;
DABi = zeros(1,length(t));
vin = zeros(1,length(t));
vo = zeros(1,length(t));
L = 27e-6;
f = 50e3;
vo = square(2*pi*f*t);
for i = 1:length(vo)
j = mod(i-30,length(vo)) + 1;
vin(i) = vo(j);
end
vin = 800.*vin;
vo = 400.*vo;
for i = 2:length(t)
DABi(i) = ((vin(i) - vo(i)) / L) * (t(i) - t(i-1)) + DABi(i-1);
end
DABi = DABi - mean(DABi);
% Finding the switching points
switchingIndices = find(diff(vin) ~= 0) + 1;
inputSwitchMatrix = zeros(length(switchingIndices), 2);
for i = 1:length(switchingIndices)
idx = switchingIndices(i);
inputVoltage = vin(idx);
currentAtSwitch = DABi(idx);
% Determine the matrix value based on your conditions
if inputVoltage == 400
% For 400V switch
if currentAtSwitch > 0
inputSwitchMatrix(i, :) = [400, 1];
elseif currentAtSwitch == 0
inputSwitchMatrix(i, :) = [400, 0];
else\
inputSwitchMatrix(i, :) = [400, -1];
end
elseif inputVoltage == -800
% For -400V switch, note your vin is actually 800 or -800
if currentAtSwitch > 0
inputSwitchMatrix(i, :) = [-800, 1];
elseif currentAtSwitch == 0
inputSwitchMatrix(i, :) = [-800, 0];
else
inputSwitchMatrix(i, :) = [-800, -1];
end
end
end
Hope it helps.
