How do i calculate the area under curve for 2 curves
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How do I calculate the area under this curve for both variables? The Jan excel file is also attached.
%%Electrical output
fileName1 = 'Jan.xlsx';
numData1 = xlsread(fileName1);
Apv = 48 * 1.566; % 48=NoPanels 1.566 area of PV per panel
nel=0.238;
syms J
P= Apv*J*nel;
Pout = subs(P,{J},{numData1(2:25,6)'});
%%
hour = (numData1(2:25,4)');
figure (2);
plot(hour,Pout);
Pconsumption = (numData1(2:25,16)');
hold on;
plot(hour,Pconsumption,'r');
hold off
title('Electrical Power Generated vs Electrical Power consumed')
legend('Electrical Power from PV','Power requirement of system');
xlabel('Time of day');
ylabel( 'Power (W)');
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Star Strider
2019 年 7 月 30 日
It depends on the result you want. Note that the last values in your vectors are NaN, so that is going to cause problems in your calculations.
I would instead use:
Pout = Apv*nel*numData1(2:24,6);
hour = (numData1(2:24,4));
Pconsumption = (numData1(2:24,16));
For the integrations, try this:
cintPout = cumtrapz(hour, Pout); % Cumulative Integration
intPout = trapz(hour, Pout); % Complete Integration
cintPconsumption = cumtrapz(hour, Pconsumption); % Cumulative Integration
intPconsumption = trapz(hour, Pconsumption); % Complete Integration
Choose the full integration or the cumulative integration (that you can plot) depending on what you want to do.
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