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How do can I change an input variable for get a different answer each time a loop runs?

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Georgina Hammond
Georgina Hammond on 6 Mar 2018
Closed: MATLAB Answer Bot on 20 Aug 2021
This is my loop:
for Day = 1:365
Io = Isc*(1+(0.034*cos(2*pi*(Day/365.25))));
SolarDeclination = deg2rad(DeclinationAngle * sin(deg2rad(360/365)*(Day + var_2)));
SolarDeclinationDeg = rad2deg(SolarDeclination);
HoursAngle = acos(-tan(deg2rad(Latitude))*tan(SolarDeclination));
AltitudeAngle = asin((sin(SolarDeclination)*(sin(deg2rad(Latitude))))+(cos(SolarDeclination)*cos(deg2rad(15*1)))*cos(deg2rad(Latitude)));
AltitudeAngleDeg = rad2deg(AltitudeAngle);
ZenithAngle = deg2rad(90)- AltitudeAngle;
ZenithAngleDeg = rad2deg(ZenithAngle);
AM = 1/cos(ZenithAngle);
Id = 1.353*(0.7^(AM^0.678));
w = acos(-tan(deg2rad(Latitude)-deg2rad(PanelTilt))*tan(SolarDeclination));
Elevation = deg2rad(90-Latitude+SolarDeclinationDeg);
Rb = sin(Elevation+deg2rad(PanelTilt))/sin(Elevation);
Ioh = (1367*Id*(1+(0.034*cos(2*pi*(Day/365.25))))*((cos(SolarDeclination))*(cos(deg2rad(Latitude)))*(cos(deg2rad(Angle)))+((sin(SolarDeclination))*(sin(deg2rad(Latitude))))))/1000;
IohFiltered = (Ioh*PanelArea*PanelYield*PR)/100;
IohFilteredT = [IohFiltered>0];
IohFinal = IohFilteredT.*IohFiltered;
ConnectionCapacityHour = ones(24,1)*ConnectionCapacity;
Tilt = IohFinal*Rb;
MaxPanel = Tilt;
[row col] = find(MaxPanel>ConnectionCapacity);
LimitedOutputFinal = MaxPanel;
LimitedOutputFinal(row) = ConnectionCapacity;
ConstrainedAmount = [MaxPanel>LimitedOutputFinal].*(MaxPanel-LimitedOutputFinal)
DailyMaxPanelTotal = sum(MaxPanel)
DailyLimitedOutputTotal = sum(LimitedOutputFinal)
DailyConstrainedAmountTotal = sum(ConstrainedAmount);
%
if DailyConstrainedAmountTotal > BatteryCapacity;
DailyConnectionCapacityTotal = BatteryCapacity;
else
DailyConnectionCapacityTotal = DailyConstrainedAmountTotal;
end
%
OverallTotalEnergy = OverallTotalEnergy + DailyMaxPanelTotal
OverallLimitedEnergy = OverallLimitedEnergy + DailyLimitedOutputTotal
OverallConstrainedEnergy = OverallConstrainedEnergy + DailyConnectionCapacityTotal
PercentageConstrained = (OverallConstrainedEnergy/OverallTotalEnergy)*100
end
I want to change the PanelArea each time the loop runs. With
PanelArea = 1.6*[1.0;1.05;1.10;1.15;1.2;1.25;1.3;1.35;1.4;1.45;1.5]
(these I are the values are want to input each time.
Is this possible to carry out in a loop run without changing the PanelArea manually each time?
  1 Comment
Georgina Hammond
Georgina Hammond on 6 Mar 2018
To make it clear I want to get ten values for each output of the loop (OverallTotalEnergy etc) by changing the PanelArea.

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Answers (1)

per isakson
per isakson on 6 Mar 2018
Study this
>> M = cssm
M =
0 0.0212 0.0212 0 7.1045 7.1045 0 0
0 0.0223 0.0223 0 7.4597 7.4597 0 0
0 0.0234 0.0234 0 7.8149 7.8149 0 0
0 0.0244 0.0244 0 8.1701 8.1701 0 0
0 0.0255 0.0255 0 8.5254 8.5254 0 0
0 0.0265 0.0265 0 8.8806 8.8806 0 0
0 0.0276 0.0276 0 9.2358 9.2358 0 0
0 0.0287 0.0287 0 9.5910 9.5910 0 0
0 0.0297 0.0297 0 9.9463 9.9463 0 0
0 0.0308 0.0308 0 10.3015 10.3015 0 0
0 0.0319 0.0319 0 10.6567 10.6567 0 0
where
function M = cssm
PanelArea = 1.6*[1.0;1.05;1.10;1.15;1.2;1.25;1.3;1.35;1.4;1.45;1.5];
M = nan( 11, 8 );
for ix = 1 : length( PanelArea )
[M(ix,1),M(ix,2),M(ix,3),M(ix,4),M(ix,5),M(ix,6),M(ix,7),M(ix,8)] ...
= cssm_( PanelArea(ix) );
end
end
function varargout = cssm_( PanelArea )
Isc = 1.0;
DeclinationAngle = 23.6;
var_2 = 1;
Latitude = 1;
PanelTilt = 1;
Angle = 1;
PanelYield = 1;
PR = 1;
ConnectionCapacity = 1;
BatteryCapacity = 1;
OverallTotalEnergy = 0;
OverallLimitedEnergy = 0;
OverallConstrainedEnergy = 0;
%
for Day = 1:365
Io = Isc*(1+(0.034*cos(2*pi*(Day/365.25))));
SolarDeclination = deg2rad(DeclinationAngle * sin(deg2rad(360/365)*(Day + var_2)));
SolarDeclinationDeg = rad2deg(SolarDeclination);
HoursAngle = acos(-tan(deg2rad(Latitude))*tan(SolarDeclination));
AltitudeAngle = asin((sin(SolarDeclination)*(sin(deg2rad(Latitude))))+(cos(SolarDeclination)*cos(deg2rad(15*1)))*cos(deg2rad(Latitude)));
AltitudeAngleDeg = rad2deg(AltitudeAngle);
ZenithAngle = deg2rad(90)- AltitudeAngle;
ZenithAngleDeg = rad2deg(ZenithAngle);
AM = 1/cos(ZenithAngle);
Id = 1.353*(0.7^(AM^0.678));
w = acos(-tan(deg2rad(Latitude)-deg2rad(PanelTilt))*tan(SolarDeclination));
Elevation = deg2rad(90-Latitude+SolarDeclinationDeg);
Rb = sin(Elevation+deg2rad(PanelTilt))/sin(Elevation);
Ioh = (1367*Id*(1+(0.034*cos(2*pi*(Day/365.25))))*((cos(SolarDeclination))*(cos(deg2rad(Latitude)))*(cos(deg2rad(Angle)))+((sin(SolarDeclination))*(sin(deg2rad(Latitude))))))/1000;
IohFiltered = (Ioh*PanelArea*PanelYield*PR)/100;
IohFilteredT = [IohFiltered>0];
IohFinal = IohFilteredT.*IohFiltered;
ConnectionCapacityHour = ones(24,1)*ConnectionCapacity;
Tilt = IohFinal*Rb;
MaxPanel = Tilt;
[row col] = find(MaxPanel>ConnectionCapacity);
LimitedOutputFinal = MaxPanel;
LimitedOutputFinal(row) = ConnectionCapacity;
ConstrainedAmount = [MaxPanel>LimitedOutputFinal].*(MaxPanel-LimitedOutputFinal);
DailyMaxPanelTotal = sum(MaxPanel);
DailyLimitedOutputTotal = sum(LimitedOutputFinal);
DailyConstrainedAmountTotal = sum(ConstrainedAmount);
%
if DailyConstrainedAmountTotal > BatteryCapacity;
DailyConnectionCapacityTotal = BatteryCapacity;
else
DailyConnectionCapacityTotal = DailyConstrainedAmountTotal;
end
%
OverallTotalEnergy = OverallTotalEnergy + DailyMaxPanelTotal;
OverallLimitedEnergy = OverallLimitedEnergy + DailyLimitedOutputTotal;
OverallConstrainedEnergy = OverallConstrainedEnergy + DailyConnectionCapacityTotal;
PercentageConstrained = (OverallConstrainedEnergy/OverallTotalEnergy)*100;
%
end
varargout = { ConstrainedAmount, DailyMaxPanelTotal, DailyLimitedOutputTotal ...
, DailyConstrainedAmountTotal ...
, OverallTotalEnergy, OverallLimitedEnergy, OverallConstrainedEnergy ...
, PercentageConstrained };
end

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