private VoltageLimitCurve buildVoltageLimitCurve(int count = 50, double Imax = 55, double Umax = 140, double max_speed = 6000)
{
var mtpa = buildTableMaxtorquePerAmple();
VoltageLimitCurve vlc = new VoltageLimitCurve()
{
Imax = Imax,
Umax = Umax,
MaxSpeed = max_speed,
};
for (int i = 0; i < count + 1; i++)
{
double t = mtpa.GetMaxTorqueWithCurrentMagnitude(i * Imax / count);
var idq = mtpa.GetCurrentForTorque(t);
// look for speed, that is suitable for given current (in max torque condition) and u=Umax
double ss = 0;
bool success = Brent.TryFindRoot(s =>
{
var data_ = calculatePointdata(idq.d, idq.q, s);
var u_ = Math.Sqrt(data_.ud * data_.ud + data_.uq * data_.uq);
return(u_ - Umax);
}, 100, max_speed, 1e-3, 100, out ss);
if (success)
{
vlc.speeds.Add(ss);
vlc.torques.Add(t);
vlc.currents.Add(idq);
}
}
return(vlc);
}
private void bt_show_maxtorque_capa_curve_Click(object sender, EventArgs e)
{
try
{
double Imax = double.Parse(tb_Imax.Text);
double Umax = double.Parse(tb_Umax.Text);
double max_speed = double.Parse(tb_maxSpeed.Text);
MaxtorqueCapabilityCurve mtcc = buildMaxtorqueCapabilityCurve(50, Imax, Umax, max_speed);
VoltageLimitCurve vlc = buildVoltageLimitCurve(50, Imax, Umax, max_speed);
GraphWindow tc = new GraphWindow();
tc.addData("Torque-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.maxtorques.ToArray()));
tc.addData("Current-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.currents.Select(f => f.Magnitude).ToArray()));
tc.addData("CurrentPhase-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.currents.Select(f => f.Phase).ToArray()));
tc.addData("Voltage-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.voltages.Select(f => f.Magnitude).ToArray()));
tc.addData("Power-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.power.ToArray()));
tc.addData("Efficiency", new PointPairList(mtcc.speeds.ToArray(), mtcc.effs.ToArray()));
tc.addData("Boundary-Torque-speed1", new PointPairList(vlc.speeds.ToArray(), vlc.torques.ToArray()));
tc.addData("(iq,id)", new PointPairList(mtcc.currents.Select(f => f.d).ToArray(), mtcc.currents.Select(f => f.q).ToArray()));
tc.addData("id-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.currents.Select(f => f.d).ToArray()));
tc.addData("iq-speed", new PointPairList(mtcc.speeds.ToArray(), mtcc.currents.Select(f => f.q).ToArray()));
tc.Show();
}
catch (Exception ex)
{
MessageBox.Show("Error: " + ex.Message);
}
}
private void bt_showmap_Click(object sender, EventArgs e)
{
bool success = true;
double Imax = 0;
success = success && double.TryParse(tb_Imax.Text, out Imax);
double Umax = 0;
success = success && double.TryParse(tb_Umax.Text, out Umax);
double max_speed = 0;
success = success && double.TryParse(tb_maxSpeed.Text, out max_speed);
string config = string.Format("{0},{1},{2}", Imax, Umax, max_speed);
MapType maptype = MapType.power;
Enum.TryParse <MapType>(comboBox_maptype.Text, true, out maptype);
if (!success)
{
MessageBox.Show("Error parse text to double");
return;
}
var mtpa = buildTableMaxtorquePerAmple();
int n = 100;
double x0 = 0;
double x1 = max_speed;
double y0 = 0;
double y1 = mtpa.GetMaxTorqueWithCurrentMagnitude(Imax);
if (last_config != config)
{
effMap = buildEfficiencyMap(50, 100, Imax, Umax, max_speed);
last_config = config;
}
var data = effMap.power;
string title = "Power (W)";
switch (maptype)
{
case MapType.power:
data = effMap.power;
title = "Power (W)";
break;
case MapType.efficiency:
data = effMap.efficiency;
title = "Efficiency (%)";
break;
case MapType.windingloss:
data = effMap.windingloss;
title = "Winding loss (W)";
break;
case MapType.rotor_coreloss:
data = effMap.rotor_coreloss;
title = "Rotor core loss (W)";
break;
case MapType.stator_coreloss:
data = effMap.stator_coreloss;
title = "Stator loss (W)";
break;
case MapType.coreloss:
data = effMap.coreloss;
title = "Core loss (W)";
break;
case MapType.total_loss:
data = effMap.totalloss;
title = "Total loss (W)";
break;
case MapType.voltage:
data = effMap.voltage;
title = "Voltage (V)";
break;
case MapType.current:
data = effMap.current;
title = "Current (A)";
break;
case MapType.beta:
data = effMap.beta;
title = "Beta (degree)";
break;
case MapType.Ld:
data = effMap.Ld;
title = "Ld (mH)";
break;
case MapType.Lq:
data = effMap.Lq;
title = "Ld (mH)";
break;
default:
break;
}
double fmin = double.MaxValue;
for (int i = 0; i < data.GetLength(0); i++)
{
for (int j = 0; j < data.GetLength(1); j++)
{
if (data[i, j] >= 0 && fmin > data[i, j])
{
fmin = data[i, j];
}
}
}
var model = new PlotModel
{
Title = title,
};
model.Axes.Add(new LinearColorAxis
{
Position = AxisPosition.Right,
Palette = OxyPalettes.Jet(500),
HighColor = OxyColors.Gray,
LowColor = OxyColors.White,
Minimum = fmin,
//Maximum = 100,
Title = title
});
model.Axes.Add(new LinearAxis
{
Position = AxisPosition.Bottom,
Title = "Speed",
//MajorGridlineStyle = LineStyle.Solid,
//MinorGridlineStyle = LineStyle.Solid,
//MajorGridlineColor = OxyColor.FromAColor(40, c),
//MinorGridlineColor = OxyColor.FromAColor(20, c)
});
model.Axes.Add(new LinearAxis
{
Position = AxisPosition.Left,
Title = "Torque",
//AbsoluteMinimum = 0,
//Minimum = 0,
//MajorGridlineStyle = LineStyle.Solid,
//MinorGridlineStyle = LineStyle.Solid,
//MajorGridlineColor = OxyColor.FromAColor(40, c),
//MinorGridlineColor = OxyColor.FromAColor(20, c)
});
var hms = new HeatMapSeries
{
X0 = x0,
X1 = x1,
Y0 = y0,
Y1 = y1,
Data = data,
Interpolate = true,
};
model.Series.Add(hms);
// contour
var cs = new ContourSeries
{
//Color = OxyColors.Gray,
//FontSize = 12,
//ContourLevelStep = double.NaN,
//LabelBackground = OxyColors.White,
ColumnCoordinates = effMap.speed_points,
RowCoordinates = effMap.torque_points,
Data = data,
};
if (cs.Data == effMap.efficiency)
{
cs.ContourLevels = new double[] { 0, 20, 40, 60, 80, 90, 91, 92, 93, 94, 95, 95.2, 95.4, 95.6, 95.8, 96, 96.2, 97, 98, 99 };
model.Series.Add(cs);
}
// max-torque capability curve
MaxtorqueCapabilityCurve mtcc = buildMaxtorqueCapabilityCurve(100, Imax, Umax, max_speed);
var mtcc_series = new LineSeries()
{
LineStyle = LineStyle.Solid,
Color = OxyColor.FromArgb(255, 0, 0, 0),
StrokeThickness = 3,
};
for (int i = 0; i < mtcc.speeds.Count; i++)
{
mtcc_series.Points.Add(new OxyPlot.DataPoint(mtcc.speeds[i], mtcc.maxtorques[i]));
}
model.Series.Add(mtcc_series);
// voltage limit curve 1
VoltageLimitCurve vlc = buildVoltageLimitCurve(100, Imax, Umax, max_speed);
var vlc_series = new LineSeries()
{
LineStyle = LineStyle.Dash,
StrokeThickness = 1,
};
for (int i = 0; i < vlc.speeds.Count; i++)
{
vlc_series.Points.Add(new OxyPlot.DataPoint(vlc.speeds[i], vlc.torques[i]));
}
model.Series.Add(vlc_series);
plot.Model = model;
}
private EfficiencyMap buildEfficiencyMap(int torque_count, int speed_count, double Imax, double Umax, double max_speed)
{
MaxtorqueCapabilityCurve mtcc = buildMaxtorqueCapabilityCurve(speed_count, Imax, Umax, max_speed);
VoltageLimitCurve vlc = buildVoltageLimitCurve(speed_count, Imax, Umax, max_speed);
var em = new EfficiencyMap()
{
// input
Imax = Imax,
Umax = Umax,
MaxSpeed = max_speed,
// axis
speed_points = new double[speed_count + 1],
torque_points = new double[torque_count + 1],
// value
power = new double[speed_count + 1, torque_count + 1],
windingloss = new double[speed_count + 1, torque_count + 1],
rotor_coreloss = new double[speed_count + 1, torque_count + 1],
stator_coreloss = new double[speed_count + 1, torque_count + 1],
coreloss = new double[speed_count + 1, torque_count + 1],
totalloss = new double[speed_count + 1, torque_count + 1],
efficiency = new double[speed_count + 1, torque_count + 1],
voltage = new double[speed_count + 1, torque_count + 1],
current = new double[speed_count + 1, torque_count + 1],
beta = new double[speed_count + 1, torque_count + 1],
Ld = new double[speed_count + 1, torque_count + 1],
Lq = new double[speed_count + 1, torque_count + 1],
};
em.power.Fill2D(double.NaN);
em.windingloss.Fill2D(double.NaN);
em.rotor_coreloss.Fill2D(double.NaN);
em.stator_coreloss.Fill2D(double.NaN);
em.coreloss.Fill2D(double.NaN);
em.totalloss.Fill2D(double.NaN);
em.efficiency.Fill2D(double.NaN);
em.voltage.Fill2D(double.NaN);
em.current.Fill2D(double.NaN);
em.beta.Fill2D(double.NaN);
em.Ld.Fill2D(double.NaN);
em.Lq.Fill2D(double.NaN);
var mtpa = buildTableMaxtorquePerAmple();
double max_t = mtpa.GetMaxTorqueWithCurrentMagnitude(Imax);
LinearSpline torqueCapabilityLimit = LinearSpline.Interpolate(mtcc.speeds, mtcc.maxtorques);
for (int i = 0; i < speed_count + 1; i++)
{
for (int j = 0; j < torque_count + 1; j++)
{
// speed
double speed = max_speed * i / speed_count;
em.speed_points[i] = speed;
// torque
double t = max_t * j / torque_count;
em.torque_points[j] = t;
double max_possible_torque = torqueCapabilityLimit.Interpolate(speed);
if (t > max_possible_torque)
{
continue;
}
// speed limit 1
double speed1 = vlc.GetMaxSpeedForTorque(t);
APointData data = null;
if (t == 0)
{
data = calculatePointdata(0, 0, speed);
}
// zone 1
else if (speed <= speed1)
{
Fdq idq = mtpa.GetCurrentForTorque(t);
if (double.IsNaN(idq.d) || double.IsNaN(idq.q))
{
data = null;
}
else
{
data = calculatePointdata(idq.d, idq.q, speed);
}
}
else
{
Fdq idq = getCurrentForZone2(t, speed, Imax, Umax);
if (double.IsNaN(idq.d) || double.IsNaN(idq.q))
{
data = null;
}
else
{
data = calculatePointdata(idq.d, idq.q, speed);
}
}
if (data != null)
{
em.rotor_coreloss[i, j] = data.rotorloss;
em.stator_coreloss[i, j] = data.statorloss;
em.coreloss[i, j] = data.rotorloss + data.statorloss;
em.windingloss[i, j] = data.copperloss;
em.totalloss[i, j] = data.copperloss + data.rotorloss + data.statorloss;
em.power[i, j] = data.power;
em.efficiency[i, j] = 100 * data.power / (data.power + em.totalloss[i, j]);
em.voltage[i, j] = data.voltage;
em.current[i, j] = data.current;
em.beta[i, j] = data.beta;
em.Ld[i, j] = double.IsNaN(data.Ld) || data.Ld < 0 ? -0.0001 : data.Ld * 1000; //to mH
em.Lq[i, j] = double.IsNaN(data.Ld) || data.Ld < 0 ? -0.0001 : data.Lq * 1000; //to mH
}
}
}
return(em);
}
