protected override void analyze()
{
FEMM femm = FEMM.DefaultFEMM;
// open original femm file
femm.open(Path_OriginalFEMFile);
// modify current, freq
femm.mi_probdef(Freq, FEMM.UnitsType.millimeters, FEMM.ProblemType.planar, 1e-8, Motor.GeneralParams.MotorLength, 7, FEMM.ACSolverType.Succ_Approx);
string ia = string.Format("{0}", Current);
string ib = string.Format("{0}+I*{1}", Current * Math.Cos(-2 * Math.PI / 3), Current * Math.Sin(-2 * Math.PI / 3));
string ic = string.Format("{0}+I*{1}", Current * Math.Cos(2 * Math.PI / 3), Current * Math.Sin(2 * Math.PI / 3));
femm.mi_modifycircuitCurrent("A", ia);
femm.mi_modifycircuitCurrent("B", ib);
femm.mi_modifycircuitCurrent("C", ic);
// save as new file and analyze
femm.mi_saveas(WorkingFEMFile);
femm.mi_analyze(true);
femm.mi_close();
femm.open(WorkingANSFile);
measureData(femm);
femm.mo_close();
}
/// <summary>
/// analyze will be sealed here, the child class can only do the measure action
/// </summary>
protected sealed override void analyze()
{
FEMM femm = null;
if (FEMMToUse != null && FEMMToUse.Count > 0)
{
femm = FEMMToUse[0];
}
else
{
femm = FEMM.DefaultFEMM;
}
// open original femm file
femm.open(Path_OriginalFEMFile);
// no modification (if other like transient will need to rotate rotor)
// save as new file and analyze
if (!DoAnalysisOnOriginalFEMFile)
{
femm.mi_saveas(WorkingFEMFile);
}
femm.mi_analyze(true);
femm.mi_close();
if (!File.Exists(WorkingANSFile))
{
log.Error(WorkingANSFile + " not exists, there may be something wrong with Femm file " + WorkingFEMFile);
return;
}
femm.open(WorkingANSFile);
try
{
measureInOpenedFem(femm);
}
catch (Exception ex)
{
log.Error(ex.Message);
}
femm.mo_close();
}
protected override void measureInOpenedFem(FEMM femm)
{
// Begin to measure
FEMM.LineIntegralResult lir = new FEMM.LineIntegralResult();
VPMMotor Motor = this.Motor as VPMMotor;
VPMRotor Rotor = Motor.Rotor;
Stator3Phase Stator = Motor.Stator;
GeneralParameters GeneralParams = Motor.GeneralParams;
AirgapNormal Airgap = Motor.Airgap;
PMStaticResults Results = this.Results as PMStaticResults;
double xS = Rotor.Rrotor * Math.Cos(Rotor.alpha * 0.9999);
double yS = Rotor.Rrotor * Math.Sin(Rotor.alpha * 0.9999);
// get phiD
femm.mo_addcontour(xS, yS);
//femm.mo_selectpoint(Rotor.xR, Rotor.yR);
femm.mo_addcontour(xS, -yS);
femm.mo_bendcontour(-360 / (2 * Rotor.p), 1);
lir = femm.mo_lineintegral_full();
Results.phiD = Math.Abs(lir.totalBn);
// get phiM
femm.mo_clearcontour();
femm.mo_selectpoint(Rotor.xD, Rotor.yD);
femm.mo_selectpoint(Rotor.xG, Rotor.yG);
FEMM.LineIntegralResult rr = femm.mo_lineintegral(FEMM.LineIntegralType.Bn);
Results.phiM = Math.Abs(rr.totalBn * 2);
// get phib
femm.mo_clearcontour();
femm.mo_selectpoint(Rotor.xH, Rotor.yH);
femm.mo_selectpoint(Rotor.xH, -Rotor.yH);
rr = femm.mo_lineintegral(FEMM.LineIntegralType.Bn);
Results.phib = Math.Abs(rr.totalBn);
femm.mo_clearcontour();
femm.mo_selectpoint(Rotor.xE, Rotor.yE);
femm.mo_selectpoint(Rotor.xA, Rotor.yA);
rr = femm.mo_lineintegral(FEMM.LineIntegralType.Bn);
Results.phib += Math.Abs(rr.totalBn * 2);
// get phisigmaFe
femm.mo_clearcontour();
femm.mo_addcontour(Rotor.xA, Rotor.yA);
femm.mo_addcontour(xS, yS);
rr = femm.mo_lineintegral(FEMM.LineIntegralType.Bn);
Results.phiFe = Math.Abs(rr.totalBn * 2);
// get phisigmaS
double xZ = (Stator.Rinstator + 5) * Math.Cos(2 * Math.PI / (4 * Rotor.p) - 2 * Math.PI / 180);
double yZ = (Stator.Rinstator + 5) * Math.Sin(2 * Math.PI / (4 * Rotor.p) - 2 * Math.PI / 180);
femm.mo_clearcontour();
femm.mo_selectpoint(Rotor.xS, Rotor.yS);
femm.mo_selectpoint(xZ, yZ);
rr = femm.mo_lineintegral(FEMM.LineIntegralType.Bn);
Results.phisigmaS = Math.Abs(rr.totalBn * 2);
// get FM
femm.mo_clearcontour();
femm.mo_addcontour((Rotor.xI + Rotor.xF) / 2, (Rotor.yI + Rotor.yF) / 2);
femm.mo_addcontour((Rotor.xD + Rotor.xG) / 2, (Rotor.yD + Rotor.yG) / 2);
rr = femm.mo_lineintegral(FEMM.LineIntegralType.Ht);
Results.FM = Math.Abs(rr.totalHt);
// get B_airgap
int n = 128;
Results.Bairgap = new PointD[n * 2];
double RR = (Rotor.Rrotor + Stator.Rinstator) / 2;
for (int i = 0; i < n; i++)
{
double a = -(i - n / 2.0) / n * 2 * Rotor.alpha;
double px = RR * Math.Cos(a);
double py = RR * Math.Sin(a);
FEMM.PointValues pv = femm.mo_getpointvalues(px, py);
Results.Bairgap[i].X = 2 * Rotor.alpha * RR * i / n;
Results.Bairgap[i].Y = pv.B1 * Math.Cos(a) + pv.B2 * Math.Sin(a);
if (double.IsNaN(Results.Bairgap[i].Y))
{
Results.Bairgap[i].Y = 0;
}
if (Results.Bdelta_max < Math.Abs(Results.Bairgap[i].Y))
{
Results.Bdelta_max = Math.Abs(Results.Bairgap[i].Y);
}
}
// make a mirror (odd function)
double dd = 2 * Rotor.alpha * RR;
for (int i = 0; i < n; i++)
{
Results.Bairgap[i + n].X = Results.Bairgap[i].X + dd;
Results.Bairgap[i + n].Y = -Results.Bairgap[i].Y;
}
double wd = Rotor.gammaMedeg / 180 * (Rotor.Rrotor + Airgap.delta / 2) * 2 * Math.PI / (2 * Rotor.p);
Results.Bdelta = Results.phiD / (GeneralParams.MotorLength * wd * 1e-6);
// psiM
Dictionary <String, FEMM.CircuitProperties> cps = Stator.getCircuitsPropertiesInAns(femm);
if (cps.ContainsKey("A") && cps.ContainsKey("B") && cps.ContainsKey("C"))
{
Fdq fdq = ParkTransform.abc_dq(cps["A"].fluxlinkage, cps["B"].fluxlinkage, cps["C"].fluxlinkage, 0);
Results.psiM = fdq.Magnitude;
}
else
{
Results.psiM = double.NaN;
}
femm.mo_close();
}
private void AnalyzeOne(int step, FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
// open femm file
femm.open(Motor.Path_FEMMFile);
///// Rotate rotor to an angle
// clear the way (line-boundary conditional in airgap)
Motor.Airgap.MakeWayInAirgapBeforeRotationInFEMM(femm);
// normalize, make rotorAngle inside (-2alpha,2alpha)
double xRotorAngle = RotorAngle;
if (!Motor.GeneralParams.FullBuildFEMModel)
{
double alphax2 = 2 * Motor.Rotor.alphaDegree;
if (xRotorAngle > alphax2 || xRotorAngle < -alphax2)
{
xRotorAngle = xRotorAngle - Math.Round(xRotorAngle / (2 * alphax2)) * 2 * alphax2;
}
}
// rotate rotor
Motor.Rotor.RotateRotorInFEMM(xRotorAngle, femm);
// modify airgap (in case partial build)
Motor.Airgap.ModifyAirgapAfterRotationInFEMM(xRotorAngle, femm);
// modify stator currents
double current = MaxCurrent / StepCount * (step - StepCount);//step can be -StepCount to +StepCount (total 2*StepCount+1), current=-Max->+Max
double IA = current * Math.Cos(Beta * Math.PI / 180);
double IB = current * Math.Cos(Beta * Math.PI / 180 - 2 * Math.PI / 3);
double IC = current * Math.Cos(Beta * Math.PI / 180 + 2 * Math.PI / 3);
Dictionary <String, double> currents = new Dictionary <string, double>()
{
{ "A", IA }, { "B", IB }, { "C", IC }
};
Motor.Stator.SetStatorCurrentsInFEMM(currents, femm);
// save as new file fem (temp only)
String stepfileFEM = OutDir + "\\" + String.Format("{0:D4}.FEM", step);
femm.mi_saveas(stepfileFEM);
// analyze
femm.mi_analyze(true);
// close
femm.mi_close();
// delete temp file
//File.Delete(stepfileFEM);
// open ans file to measure ?
String stepfileANS = Path.GetDirectoryName(stepfileFEM) + "\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".ans";
femm.open(stepfileANS);
Dictionary <String, FEMM.CircuitProperties> cps = Motor.Stator.getCircuitsPropertiesInAns(femm);
MMAnalysisOneStepResult result = new MMAnalysisOneStepResult();
result.Iabc = new Fabc {
a = cps["A"].current, b = cps["B"].current, c = cps["C"].current
};
result.FluxLinkage_abc = new Fabc {
a = cps["A"].fluxlinkage, b = cps["B"].fluxlinkage, c = cps["C"].fluxlinkage
};
result.Vabc = new Fabc {
a = cps["A"].volts, b = cps["B"].volts, c = cps["C"].volts
};
// no currents, then save the fluxlinkageM, which is importance to calculate Ld
if (current == 0)
{
Results.FluxLinkageM = result.FluxLinkage_dq.d;
}
result.FluxLinkage_M = Results.FluxLinkageM;
Results[step] = result;
femm.mo_close();
log.Info("Step " + step + " done.");
}
/// <summary>
/// Analyze 1 step, using femm window
/// </summary>
/// <param name="data"></param>
/// <param name="step"></param>
/// <param name="femm"></param>
private void AnalyzeOne(int step, FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
double t = Results.Times[step];
double rotorAngle = RotorSpeedDegreeSecond * t + StartAngle;
// run script to update IA,IB,IC
NLua.Lua lua_state = LuaHelper.GetLuaState();
String[] currentFormulas = { IA, IB, IC };
String[] circuitNames = { "A", "B", "C" };
Dictionary <String, double> currents = new Dictionary <string, double>();
try
{
lua_state["step"] = step;
lua_state["time"] = t;
lua_state["omega"] = RotorSpeedRadSecond;
for (int i = 0; i < currentFormulas.Length; i++)
{
double Ix = (double)lua_state.DoString("return " + currentFormulas[i])[0];
currents[circuitNames[i]] = Ix;
}
}
catch (Exception ex)
{
log.Error("Lua error :" + ex.Message);
//TODO: maybe halt analysis since there maybe big problem
}
// open femm file
femm.open(Motor.Path_FEMMFile);
// clear the way (line-boundary conditional in airgap)
Motor.Airgap.MakeWayInAirgapBeforeRotationInFEMM(femm);
// normalize, make rotorAngle inside (-2alpha,2alpha)
double xRotorAngle = rotorAngle;
if (!Motor.GeneralParams.FullBuildFEMModel)
{
double alphax2 = 2 * Motor.Rotor.alphaDegree;
if (xRotorAngle > alphax2 || xRotorAngle < -alphax2)
{
xRotorAngle = xRotorAngle - Math.Round(xRotorAngle / (2 * alphax2)) * 2 * alphax2;
}
}
// rotate rotor
Motor.Rotor.RotateRotorInFEMM(xRotorAngle, femm);
// modify airgap (in case partial build)
Motor.Airgap.ModifyAirgapAfterRotationInFEMM(xRotorAngle, femm);
// modify stator currents using args passed from OnBeginAnalyzeOne
Motor.Stator.SetStatorCurrentsInFEMM(currents, femm);
// save as new file fem (temp only)
String stepfileFEM = OutDir + "\\" + String.Format("{0:D4}.FEM", step);
femm.mi_saveas(stepfileFEM);
// analyze
femm.mi_analyze(true);
// close
femm.mi_close();
// delete temp file
//File.Delete(stepfileFEM);
// open ans file to measure ?
String stepfileANS = Path.GetDirectoryName(stepfileFEM) + "\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".ans";
femm.open(stepfileANS);
//String bmpFile = config.OutDir + "\\bmp\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".bmp";
//femm.mo_savebitmap(bmpFile);
// get circuits properties from stator
TransientStepResult result = new TransientStepResult();
Dictionary <String, FEMM.CircuitProperties> cps = Motor.Stator.getCircuitsPropertiesInAns(femm);
double torque = Motor.Rotor.getTorqueInAns(femm);
result.Torque = torque;
result.RotorAngle = rotorAngle;
result.CircuitProperties = cps;
Results[step] = result;
OnFinishAnalyzeOneStep(this, result);
log.Info(String.Format("Time {0:F5}: {1}", t, torque));
femm.mo_close();
}
private void AnalyzeOne(int step, FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
// open femm file
femm.open(Path_OriginalFEMFile);
///// Rotate rotor to an angle
// clear the way (line-boundary conditional in airgap)
Motor.Airgap.RemoveBoundary(femm);
// normalize, make rotorAngle inside (-2alpha,2alpha) to build FEMM model
double femmRotorAngle = Motor.GetNormalizedRotorAngle(RotorAngle);
// rotate rotor
Motor.Rotor.RotateRotorInFEMM(femmRotorAngle, femm);
// modify airgap (in case partial build)
Motor.Airgap.AddBoundaryAtAngle(femmRotorAngle, femm);
// modify stator currents
// testing iq=const, id change to see how inductance d,q change
//double id = 80.0 / StepCount * (step - StepCount);
//double iq = 40.0;
//double current = Math.Sqrt(id * id + iq * iq);
//double Beta = Math.Abs(id) > 1e-8 ? Math.Atan(iq / id) * 180 / Math.PI : 90.0;
//if (Beta < 0)
// Beta += 180;
// Test change beta, not current
//double beta = (this.Beta - 100) / StepCount * step + 100;
//double current = MaxCurrent;
var stator = Motor.Stator as Stator3Phase;
// Change current
double current;
if (Only2ndQuarter)
{
int c = NotIncludeCurrentZero ? 1 : 0;
current = MaxCurrent * (step + c) / StepCount;
}
else
{
int c = NotIncludeCurrentZero ? (step < StepCount ? 0 : 1) : 0;
current = MaxCurrent / StepCount * ((step + c) - StepCount);
}
// correction beta with current rotor angle and original angle (0)
double beta = this.Beta + (RotorAngle - stator.VectorMMFAngle) * Motor.Rotor.p;//in degree
double IA = current * Math.Cos(beta * Math.PI / 180);
double IB = current * Math.Cos(beta * Math.PI / 180 - 2 * Math.PI / 3);
double IC = current * Math.Cos(beta * Math.PI / 180 + 2 * Math.PI / 3);
Dictionary <String, double> currents = new Dictionary <string, double>()
{
{ "A", IA }, { "B", IB }, { "C", IC }
};
Motor.Stator.SetStatorCurrentsInFEMM(currents, femm);
// save as new file fem (temp only)
String stepfileFEM = Path_ToAnalysisVariant + "\\" + String.Format("{0:D4}.FEM", step);
femm.mi_saveas(stepfileFEM);
// analyze
femm.mi_analyze(true);
// close
femm.mi_close();
// delete temp file
//File.Delete(stepfileFEM);
// open ans file to measure ?
String stepfileANS = Path.GetDirectoryName(stepfileFEM) + "\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".ans";
femm.open(stepfileANS);
Dictionary <String, FEMM.CircuitProperties> cps = Motor.Stator.getCircuitsPropertiesInAns(femm);
double t = Motor.Rotor.getTorqueInAns(femm);
PMMMAnalysisOneStepResult result = new PMMMAnalysisOneStepResult();
result.Iabc = new Fabc {
a = cps["A"].current, b = cps["B"].current, c = cps["C"].current
};
result.FluxLinkage_abc = new Fabc {
a = cps["A"].fluxlinkage, b = cps["B"].fluxlinkage, c = cps["C"].fluxlinkage
};
result.Vabc = new Fabc {
a = cps["A"].volts, b = cps["B"].volts, c = cps["C"].volts
};
// no currents, then save the fluxlinkageM, which is importance to calculate Ld
var Results = this.Results as PM_MMAnalysisResults;
result.torque = t;
result.FluxLinkage_M = Results.FluxLinkageM;
result.theta_e = (RotorAngle - stator.VectorMMFAngle) * Motor.Rotor.p * Math.PI / 180;//in radian
Results[step] = result;
femm.mo_close();
}
/// <summary>
/// Analyze 1 step, using femm window
/// </summary>
/// <param name="data"></param>
/// <param name="step"></param>
/// <param name="femm"></param>
private void AnalyzeOne(int step, FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
if (SkewAngle <= 0 || NSkewSegment <= 0)
{
// prepare arguments for this step
TransientStepArgs args = PrepareStepArgs(step);
// before analyzing
OnStartAnalyzeOneStep(this, args);
// open femm file
femm.open(Path_OriginalFEMFile);
// modify rotor: rotate, or other things that we can think of
DoModifyRotor(args, femm);
// modify stator: change current, or something else?
DoModifyStator(args, femm);
// save as new file fem (temp only)
String stepfileFEM = Path_ToAnalysisVariant + "\\" + String.Format("{0:D4}.FEM", step);
femm.mi_saveas(stepfileFEM);
// analyze
femm.mi_analyze(true);
// close
femm.mi_close();
// open ans file to measure ?
String stepfileANS = Path.GetDirectoryName(stepfileFEM) + "\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".ans";
femm.open(stepfileANS);
// do measure torque or anything else
DoMeasureData(args, femm);
// put in the list
var Results = this.Results as Transient3PhaseMotorResults;
Results[step] = args;
//log.Info(String.Format("Time {0:F5}: {1}", t, torque));
// save as bitmap
if (ExportGif)
{
femm.mo_clearblock();
femm.mo_zoom(0, -Motor.Stator.RYoke, Motor.Stator.RYoke, Motor.Stator.RYoke);
femm.mo_showdensityplot(true, false, 0, 2.1, FEMM.DensityPlotType.bmag);
femm.mo_savebitmap(Path.GetDirectoryName(stepfileFEM) + "\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".bmp");
}
// close
femm.mo_close();
// after analyzing
OnFinishAnalyzeOneStep(this, args);
}
else // has skewangle
{
// prepare arguments for this step
TransientStepArgs total_args = PrepareStepArgs(step);
// before analyzing
OnStartAnalyzeOneStep(this, total_args);
for (int k = 0; k < 2 * NSkewSegment + 1; k++)
{
TransientStepArgs args = PrepareStepArgs(step);
double sk = (k - NSkewSegment) * SkewAngle / (2 * NSkewSegment);
args.skewAngleAdded = sk;
args.RotorAngle += sk;
// open femm file
femm.open(Path_OriginalFEMFile);
// modify rotor: rotate, or other things that we can think of
DoModifyRotor(args, femm);
// modify stator: change current, or something else?
DoModifyStator(args, femm);
// save as new file fem (temp only)
String stepfileFEM = Path_ToAnalysisVariant + "\\" + String.Format("{0:D4}_{1}.FEM", step, k);
femm.mi_saveas(stepfileFEM);
// analyze
femm.mi_analyze(true);
// close
femm.mi_close();
// open ans file to measure ?
String stepfileANS = Path.GetDirectoryName(stepfileFEM) + "\\" + Path.GetFileNameWithoutExtension(stepfileFEM) + ".ans";
femm.open(stepfileANS);
// do measure torque or anything else
DoMeasureData(args, femm);
// initialize data for total
if (k == 0)
{
total_args = JSON.DeepCopy(args);
total_args.Torque = 0;
foreach (string key in total_args.CircuitProperties.Keys)
{
total_args.CircuitProperties[key].fluxlinkage = 0;
}
}
femm.mo_close();
total_args.Torque += args.Torque / (2 * NSkewSegment + 1);
foreach (string key in total_args.CircuitProperties.Keys)
{
total_args.CircuitProperties[key].fluxlinkage += args.CircuitProperties[key].fluxlinkage / (2 * NSkewSegment + 1);
}
}
// put in the list
var Results = this.Results as Transient3PhaseMotorResults;
Results[step] = total_args;
//log.Info(String.Format("Time {0:F5}: {1}", t, torque));
// after analyzing
OnFinishAnalyzeOneStep(this, total_args);
}
}