string DoBatteryCalcs(float _loadRate, LoadbankModel _lbank, float _etv)
{
string outputStringFromCalcs = "";
float lowestVoltageNeeded = _loadRate * _lbank.Resistance;
double minimumCellCount;
float cellETV = (float)GlobalData.selectedBatteryString.GetBlockType().EtvVoltage;
minimumCellCount = Math.Round(lowestVoltageNeeded / cellETV, 0, MidpointRounding.AwayFromZero);
int stringCount = GlobalData.selectedBatteryString.GetStringCount();
int cellsCanLose = stringCount - (int)minimumCellCount;
string cellName = GlobalData.selectedBatteryString.GetBlockType().CellName;
float currentAtETV = AchievableCurrentAtETV(_lbank, _etv);
if (cellsCanLose > 0)
{
outputStringFromCalcs =
"Max current available of " + Math.Round(currentAtETV, 2) + "A available at ETV of " + _etv + "V .\n" +
"Lowest voltage required to get load of " + _loadRate + "A is " + Math.Round(lowestVoltageNeeded, 2) + "V\n\n" +
"Able to link out " + cellsCanLose + " blocks before load is unattainable.";
}
else
{
if (_loadRate > currentAtETV)
{
outputStringFromCalcs =
"Max current available of " + Math.Round(currentAtETV, 2) + "A available at ETV of " + _etv + "V .\n" +
"Lowest voltage required to get load of " + _loadRate + "A is " + Math.Round(lowestVoltageNeeded, 2) + "V\n\n" +
"!! Required Load Rate is Larger than Achievable Current at ETV !!";
}
else
{
outputStringFromCalcs =
"Max current available of " + Math.Round(currentAtETV, 2) + "A available at ETV of " + _etv + "V .\n" +
"Lowest voltage required to get load of " + outputStringFromCalcs + "A is " + Math.Round(lowestVoltageNeeded, 2) + "V\n\n";
if (lowestVoltageNeeded < _etv)
{
outputStringFromCalcs += " voltage required for this load is lower than ETV";
}
else
{
outputStringFromCalcs += "Can achieve current without linking any cells out.";
}
}
}
return(outputStringFromCalcs);
}
float AchievableCurrentAtETV(LoadbankModel lb, float vETV)
{
Console.WriteLine("etv : " + vETV + " , resistance :" + lb.Resistance);
return(vETV / lb.Resistance);
}
// do the calcs and pop to screen
private void showAchievableButton_Click(object sender, EventArgs e)
{
OutputResultsLabel.Text = " - - - - - ";
if (GlobalData.selectedBatteryString != null)
{
string outputString = "not updated";
// use the string data for more info
// validate theres a voltage and loadbank selected
float etv;
LoadbankModel bankSelected = loadBankDropDown.SelectedItem as LoadbankModel;
if (bankSelected != null && float.TryParse(etvTextBox.Text, out etv))
{
float loadRateRequired;
// SO - VALID BANK, VALID ETV AND CHECKING LOADRATE
if (float.TryParse(LoadRateTextbox.Text, out loadRateRequired) == false)
{
MessageBox.Show("Check required current is in numerical format ie 00.00");
}
// NOW CHECK TO SEE IF THE VOLTAGE TOLLERANCES ARE WITHIN LIMITS
else if (bankSelected.MaxInputVoltage < etv || bankSelected.MinInputVoltage > etv)
{
Console.WriteLine("VOLTAGE TOLLERANGE OUT");
if (bankSelected.MaxInputVoltage < etv)
{
outputString = "ETV Voltage Exceeds maximum voltage for " + bankSelected.Name + ".";
}
else if (bankSelected.MinInputVoltage > etv)
{
outputString = "ETV voltage is less than minimum voltage for " + bankSelected.Name + ".";
}
}
else
{
outputString = DoBatteryCalcs(loadRateRequired, bankSelected, etv);
}
// show the message
OutputResultsLabel.Text = outputString;
}
}
else
{
// validate theres a voltage and loadbank selected
float etv;
string outputString = "";
LoadbankModel bankSelected = loadBankDropDown.SelectedItem as LoadbankModel;
if (bankSelected != null && float.TryParse(etvTextBox.Text, out etv))
{
if (etv == 0)
{
outputString = "No String Specified : \nETV Voltage cannot be 0!";
}
else
{
if (etv > bankSelected.MaxInputVoltage || etv < bankSelected.MinInputVoltage && etv > 0)
{
if (etv > bankSelected.MaxInputVoltage)
{
outputString = "ETV Voltage Exceeds maximum voltage for " + bankSelected.Name + ".";
}
if (etv < bankSelected.MinInputVoltage)
{
outputString = "ETV voltage is less than minimum voltage for " + bankSelected.Name + ".";
}
}
else
{
outputString = "No String Specified : \nmax current achievable @ ETV = " + Math.Round((AchievableCurrentAtETV(bankSelected, etv)), 2) + "A";
}
}
}
else
{
outputString = "Invalid Entries Please double check!";
}
// show the message
OutputResultsLabel.Text = outputString;
}
}
