/// <summary>
/// Call this BEFORE rotating rotor
/// </summary>
public override void RemoveBoundary(FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
if (Motor.GeneralParams.FullBuildFEMModel)
{
return;
}
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Airgap);
femm.mi_deleteselectedsegments();
base.RemoveBoundary(femm);
}
/// <summary>
/// Make a femm model using parameters
/// This will check if file existed and use parameters the same to this one or not.
/// If not, build new one
/// </summary>
/// <param name="outfile">Output femm model</param>
/// <param name="original">The original femm model to insert into</param>
/// <param name="forcebuild">True if build even file existed</param>
/// <returns>0-OK,1-File existed, analyzed,-1-ERROR</returns>
public virtual void BuildFEMModel(String outfile, FEMM femm = null)
{
// make sure coordinates were calculated
if (!isPointsCoordCalculated)
{
throw new InvalidOperationException("Points must be calculated before make FEM model.");
}
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
femm.newdocument(FEMM.DocumentType.Magnetic);
// setup problems params
femm.mi_probdef(0, FEMM.UnitsType.millimeters, FEMM.ProblemType.planar, 1e-8, GeneralParams.MotorLength, 7, FEMM.ACSolverType.Succ_Approx);
// build a rotor in femm
Rotor.BuildInFEMM(femm);
// build a stator in femm
Stator.BuildInFEMM(femm);
// build airgap (put label)
Airgap.BuildInFEMM(femm);
// clear selected, refresh, and go to natural zoom
femm.mi_clearselected();
femm.mi_zoomnatural();
femm.mi_saveas(outfile);
femm.mi_close();
// write md5 to it
FEMM.mi_modifyFEMMComment(outfile, GetMD5String());
}
public override void BuildInFEMM(FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
var Rotor = Motor.Rotor;
var Stator = Motor.Stator;
// create material
femm.mi_addmaterialAir(AirMaterialName);
femm.mi_addBlockLabelEx(Rotor.RGap + delta * 0.8, 0, AirMaterialName, Group_Fixed_BlockLabel_Airgap);
if (!Motor.GeneralParams.FullBuildFEMModel)
{
//build boundary of motor: 2 lines, anti-periodic
String boundaryName = "airgap-apb-0";
int Group_Lines = Group_Lines_Airgap;
double x1 = Rotor.RGap * Math.Cos(Rotor.alpha);
double y1 = Rotor.RGap * Math.Sin(Rotor.alpha);
double x2 = Stator.RGap * Math.Cos(Rotor.alpha);
double y2 = Stator.RGap * Math.Sin(Rotor.alpha);
femm.mi_addSegmentEx(x1, y1, x2, y2, Group_Lines);
femm.mi_addSegmentEx(x1, -y1, x2, -y2, Group_Lines);
femm.mi_addboundprop_AntiPeriodic(boundaryName);
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines);
femm.mi_setsegmentprop(boundaryName, 0, true, false, Group_Lines);
}
base.BuildInFEMM(femm);
}
/// <summary>
/// Assuming a FEMM window is opened, build rotor into that
/// </summary>
/// <param name="MaterialParams"></param>
public override void BuildInFEMM(FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
bool fullbuild = Motor.GeneralParams.FullBuildFEMModel;
// create material data
femm.mi_addmaterialAir(AirMaterialName);
femm.mi_addmaterialMagnet(MagnetMaterialName, mu_M, Hc, 0);
femm.mi_addmaterialSteel(SteelMaterialName, 1, 1, Lam_d, Lam_fill, FEMM.LaminationType.NotLaminated,
BH.Select(p => p.b).ToArray(), BH.Select(p => p.h).ToArray());
// create boundary data
femm.mi_addboundprop_Prescribed_A(BoundaryProperty, 0, 0, 0, 0);
/////// Build 1 poles
////Half one
// segments (magnet)
femm.mi_addSegmentEx(xA, yA, xB, yB, Group_Lines_Rotor); //AB
femm.mi_addSegmentEx(xB, yB, xE, yE, Group_Lines_Rotor); //BE
femm.mi_addSegmentEx(xD, yD, xE, yE, Group_Lines_Rotor); //DE
femm.mi_addSegmentEx(xE, yE, xF, yF, Group_Lines_Rotor); //EF
femm.mi_addSegmentEx(xF, yF, xC, yC, Group_Lines_Rotor); //FC
femm.mi_addSegmentEx(xD, yD, xG, yG, Group_Lines_Rotor); //DG
femm.mi_addSegmentEx(xH, yH, xG, yG, Group_Lines_Rotor); //HG
femm.mi_addSegmentEx(xH, yH, xI, yI, Group_Lines_Rotor); //HI
femm.mi_addSegmentEx(xI, yI, xF, yF, Group_Lines_Rotor); //IF
femm.mi_addSegmentEx(xH, yH, xJ, yJ, Group_Lines_Rotor); //HJ
femm.mi_addSegmentEx(xI, yI, xK, yK, Group_Lines_Rotor); //IK
if (Poletype == PoleType.MiddleAir)
{
femm.mi_addSegmentEx(xJ, yJ, xJ, 0, Group_Lines_Rotor);//JJ1
}
else
{
femm.mi_addSegmentEx(xJ, yJ, xK, yK, Group_Lines_Rotor); //JK
}
// arcsegments AC
double a = (Math.Atan(yA / xA) - Math.Atan(yC / xC)) * 180 / Math.PI;
femm.mi_addArcEx(xC, yC, xA, yA, a, 1, Group_Lines_Rotor);
// arcsegment RS
femm.mi_addArcEx(xR, yR, xS, yS, alphaDegree, 1, Group_Lines_Rotor);
// blocks
// air block label
double air1X = (xA + xB + xC) / 3;
double air1Y = (yA + yB + yC) / 3;
femm.mi_addBlockLabelEx(air1X, air1Y, AirMaterialName, Group_BlockLabel_Magnet_Air);
//FEMM.mi_addBlockLabelEx(air1X, -air1Y, AirBlockName, Group_Label);
if (Poletype != PoleType.MiddleAir)
{
double air2X = (xJ + xK + xI + xH) / 4;
double air2Y = (yJ + yK + yI + yH) / 4;
femm.mi_addBlockLabelEx(air2X, air2Y, AirMaterialName, Group_BlockLabel_Magnet_Air);
// femm.mi_addBlockLabelEx(air2X, -air2Y, AirBlockName, Group_Label);
}
// magnet block label
double magBlockLabelX = (xD + xI) / 2;
double magBlockLabelY = (yD + yI) / 2;
femm.mi_addBlockLabelEx(magBlockLabelX, magBlockLabelY, MagnetMaterialName, Group_BlockLabel_Magnet_Air, alphaM * 180 / Math.PI - 90 + 180);//+180 but set back later
//femm.mi_addBlockLabelEx(magBlockLabelX, -magBlockLabelY, MagnetBlockName, Group_Label, 90 - alphaM * 180 / Math.PI + 180);
///// mirrored all
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_mirror(0, 0, 1, 0, FEMM.EditMode.group);
//// the remainings: not symmetrical
if (Poletype == PoleType.MiddleAir)
{
femm.mi_addBlockLabelEx((xJ + xK0) / 2, 0, AirMaterialName, Group_BlockLabel_Magnet_Air);
}
////////// Build 2 poles
// copy pole if full build
if (fullbuild)
{
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_copyrotate(0, 0, 360 / (2 * p), 1, FEMM.EditMode.group);
}
// rotate the magnet direction (of the first pole)
femm.mi_clearselected();
femm.mi_selectlabel(magBlockLabelX, magBlockLabelY);
femm.mi_setblockprop(MagnetMaterialName, true, 0, "", alphaM * 180 / Math.PI - 90, Group_BlockLabel_Magnet_Air, 0);
femm.mi_clearselected();
femm.mi_selectlabel(magBlockLabelX, -magBlockLabelY);
femm.mi_setblockprop(MagnetMaterialName, true, 0, "", 90 - alphaM * 180 / Math.PI, Group_BlockLabel_Magnet_Air, 0);
if (fullbuild)
{
//////// Build p-1 pair of poles remaining
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_copyrotate(0, 0, 360 / p, p - 1, FEMM.EditMode.group);
}
/////// The remaining: not symmetrical: add label for rotor steel
femm.mi_addBlockLabelEx((DiaYoke / 2 + O2 / 2), 0, SteelMaterialName, Group_BlockLabel_Steel);
if (fullbuild)
{
// pre-rotate rotor (only in fullbuild)
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_selectgroup(Group_BlockLabel_Steel);
femm.mi_moverotate(0, 0, PreviewRotateAngle, FEMM.EditMode.group);
}
if (!fullbuild)
{
//build boundary of motor: 2 lines, anti-periodic
String boundaryName = "rotor-apb-1";
femm.mi_addSegmentEx(0, 0, xS, yS, Group_Lines_Rotor);
femm.mi_addSegmentEx(0, 0, xS, -yS, Group_Lines_Rotor);
femm.mi_addboundprop_AntiPeriodic(boundaryName);
femm.mi_clearselected();
femm.mi_selectsegment(xS, yS);
femm.mi_selectsegment(xS, -yS);
femm.mi_setsegmentprop(boundaryName, 0, true, false, Group_Lines_Rotor);
}
}
/// <summary>
/// Make a femm model using parameters from rotor creation process
/// </summary>
/// <param name="outfile">Output femm model</param>
/// <param name="original">The original femm model to insert into</param>
public void MakeAFEMMModelFile(String outfile, String original = "")
{
if (!isPointsCoordCalculated)
{
CalcPointsCoordinates();
}
// create new or open an exist
if (original == "")
{
FEMM.newdocument(FEMM.DocumentType.Magnetic);
}
else
{
FEMM.open(original);
}
//
double Rrotor = RotorParams.Rrotor;
double alpha = 2 * Math.PI / (4 * RotorParams.p);
double alphaM = RotorParams.alphaM;
int p = RotorParams.p;
///// Build 1 poles
// point far right of rotors
double xI = Rrotor;
double yI = 0;
// segments (magnet)
FEMM.mi_addSegmentEx(xA, yA, xB, yB, Group_Lines); //AB
FEMM.mi_addSegmentEx(xA, yA, xF, yF, Group_Lines); //AF
FEMM.mi_addSegmentEx(xA, yA, xD, yD, Group_Lines); //AD
FEMM.mi_addSegmentEx(xB, yB, xC, yC, Group_Lines); //BC
FEMM.mi_addSegmentEx(xC, yC, xD, yD, Group_Lines); //CD
// mirrored segments (magnet)
FEMM.mi_addSegmentEx(xA, -yA, xB, -yB, Group_Lines); //AB
FEMM.mi_addSegmentEx(xA, -yA, xF, -yF, Group_Lines); //AF
FEMM.mi_addSegmentEx(xA, -yA, xD, -yD, Group_Lines); //AD
FEMM.mi_addSegmentEx(xB, -yB, xC, -yC, Group_Lines); //BC
FEMM.mi_addSegmentEx(xC, -yC, xD, -yD, Group_Lines); //CD
// barrier segments
FEMM.mi_addSegmentEx(xC, yC, xC, -yC, Group_Lines); //AB
FEMM.mi_addSegmentEx(xD, yD, xD, -yD, Group_Lines); //AF
// arcsegments
double a = (Math.Atan(yF / xF) - Math.Atan(yB / xB)) * 180 / Math.PI;
FEMM.mi_addArcEx(xB, yB, xF, yF, a, 1, Group_Lines);
FEMM.mi_addArcEx(xF, -yF, xB, -yB, a, 1, Group_Lines);
// arcsegments rotor
FEMM.mi_addArcEx(xI, yI, xG, yG, alpha * 180 / Math.PI, 1, Group_Lines);
FEMM.mi_addArcEx(xG, -yG, xI, yI, alpha * 180 / Math.PI, 1, Group_Lines);
// blocks
// air block label
double air1X = (xA + xB + xF) / 3;
double air1Y = (yA + yB + yF) / 3;
FEMM.mi_addBlockLabelEx(air1X, air1Y, AirBlockName, Group_Label);
FEMM.mi_addBlockLabelEx(air1X, -air1Y, AirBlockName, Group_Label);
FEMM.mi_addBlockLabelEx((xC + xD) / 2, 0, AirBlockName, Group_Label);
// magnet block label
double magBlockLabelX = (xA + xC) / 2;
double magBlockLabelY = (yA + yC) / 2;
FEMM.mi_addBlockLabelEx(magBlockLabelX, magBlockLabelY, MagnetBlockName, Group_Label, alphaM * 180 / Math.PI - 90 + 180);//+180 but set back later
FEMM.mi_addBlockLabelEx(magBlockLabelX, -magBlockLabelY, MagnetBlockName, Group_Label, 90 - alphaM * 180 / Math.PI + 180);
///// Build 2 poles
FEMM.mi_clearselected();
FEMM.mi_selectgroup(Group_Lines);
FEMM.mi_selectgroup(Group_Label);
FEMM.mi_copyrotate(0, 0, 360 / (2 * p), 1, FEMM.EditMode.group);
// rotate the magnet direction
FEMM.mi_clearselected();
FEMM.mi_selectlabel(magBlockLabelX, magBlockLabelY);
FEMM.mi_setblockprop(MagnetBlockName, true, 0, "", alphaM * 180 / Math.PI - 90, Group_Label, 0);
FEMM.mi_clearselected();
FEMM.mi_selectlabel(magBlockLabelX, -magBlockLabelY);
FEMM.mi_setblockprop(MagnetBlockName, true, 0, "", 90 - alphaM * 180 / Math.PI, Group_Label, 0);
///// Build p-1 pair of poles remaining
FEMM.mi_clearselected();
FEMM.mi_selectgroup(Group_Lines);
FEMM.mi_selectgroup(Group_Label);
FEMM.mi_copyrotate(0, 0, 360 / p, p - 1, FEMM.EditMode.group);
FEMM.mi_addBlockLabelEx(0, 0, SteelBlockName, Group_Rotor_Steel);
// clear selected, refresh, and go to natural zoom
FEMM.mi_clearselected();
FEMM.mi_zoomnatural();
// save as
if (Path.GetDirectoryName(outfile) == "")
{
outfile = Path.GetDirectoryName(original) + "\\" + outfile;
}
FEMM.mi_saveas(outfile);
FEMM.mi_close();
}
/// <summary>
/// Assuming a FEMM window is opened, build rotor into that
/// </summary>
/// <param name="MaterialParams"></param>
public override void BuildInFEMM(FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
bool fullbuild = Motor.GeneralParams.FullBuildFEMModel;
// create material data
//femm.mi_addmaterialAir(AirMaterialName);
femm.mi_addmaterialMagnet(MagnetMaterialName, mu_M, Hc, 0);
femm.mi_addmaterialSteel(SteelMaterialName, 1, 1, Lam_d, Lam_fill, FEMM.LaminationType.NotLaminated,
BH.Select(p => p.b).ToArray(), BH.Select(p => p.h).ToArray());
// create boundary data
femm.mi_addboundprop_Prescribed_A(BoundaryProperty, 0, 0, 0, 0);
/////// Build 1 poles
////Half one
// arcsegments AC
double a = GammaM / 180 * alphaDegree;
femm.mi_addArcEx(xR, yR, xA, yA, a, 1, Group_Lines_Rotor);
// arcsegment RS
femm.mi_addArcEx(xRR, yRR, xSS, ySS, alphaDegree, 1, Group_Lines_Rotor);
// segments (magnet)
femm.mi_addSegmentEx(xA, yA, xB, yB, Group_Lines_Rotor);
// blocks
// magnet block label
double magBlockLabelX = (xR + xRR) / 2;
double magBlockLabelY = 0;
femm.mi_addBlockLabelEx(magBlockLabelX, magBlockLabelY, MagnetMaterialName, Group_BlockLabel_Magnet_Air, 180);//+180 but set back later
//femm.mi_addBlockLabelEx(magBlockLabelX, -magBlockLabelY, MagnetBlockName, Group_Label, 90 - alphaM * 180 / Math.PI + 180);
///// mirrored all
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_mirror(0, 0, 1, 0, FEMM.EditMode.group);
////////// Build 2 poles
// copy pole if full build
if (fullbuild)
{
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_copyrotate(0, 0, 360 / (2 * p), 1, FEMM.EditMode.group);
}
// rotate the magnet direction (of the first pole)
femm.mi_clearselected();
femm.mi_selectlabel(magBlockLabelX, magBlockLabelY);
femm.mi_setblockprop(MagnetMaterialName, true, 0, "", 0, Group_BlockLabel_Magnet_Air, 0);
if (fullbuild)
{
//////// Build p-1 pair of poles remaining
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_copyrotate(0, 0, 360 / p, p - 1, FEMM.EditMode.group);
}
/////// The remaining: not symmetrical: add label for rotor steel
femm.mi_addBlockLabelEx(RYoke / 2, 0, SteelMaterialName, Group_BlockLabel_Steel);
if (fullbuild)
{
// pre-rotate rotor (only in fullbuild)
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Rotor);
femm.mi_selectgroup(Group_BlockLabel_Magnet_Air);
femm.mi_selectgroup(Group_BlockLabel_Steel);
femm.mi_moverotate(0, 0, PreRotateAngle, FEMM.EditMode.group);
}
if (!fullbuild)
{
//build boundary of motor: 2 lines, anti-periodic
String boundaryName = "rotor-apb-1";
femm.mi_addSegmentEx(0, 0, xS, yS, Group_Lines_Rotor);
femm.mi_addSegmentEx(0, 0, xS, -yS, Group_Lines_Rotor);
femm.mi_addboundprop_AntiPeriodic(boundaryName);
femm.mi_clearselected();
femm.mi_selectsegment(xS, yS);
femm.mi_selectsegment(xS, -yS);
femm.mi_setsegmentprop(boundaryName, 0, true, false, Group_Lines_Rotor);
}
}
/// <summary>
/// Build Stator in FEMM
/// </summary>
/// <param name="MaterialParams"></param>
public override void BuildInFEMM(FEMM femm = null)
{
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
AbstractRotor Rotor = Motor.Rotor;
bool fullbuild = Motor.GeneralParams.FullBuildFEMModel;
// create material
femm.mi_addmaterialSteel(SteelMaterialName, 1, 1, Lam_d, Lam_fill, FEMM.LaminationType.NotLaminated,
BH.Select(p => p.b).ToArray(), BH.Select(p => p.h).ToArray());
femm.mi_addmaterialCopper(WireMaterialName, WireConduct, WireType, 1, WireDiameter);
// create boundary
femm.mi_addboundprop_Prescribed_A(BoundaryProperty, 0, 0, 0, 0);
/////// Build half slot
////segments - lines
femm.mi_addSegmentEx(xB, yB, xC, yC, Group_Lines_Stator); //BC
femm.mi_addSegmentEx(xD, yD, xE, yE, Group_Lines_Stator); //DE
femm.mi_addSegmentEx(xF, yF, xF, 0, Group_Lines_Stator); //FF1
if (yC != yCC)
{
femm.mi_addSegmentEx(xC, yC, xCC, yCC, Group_Lines_Stator);//CC'
}
//// arcsegments
//BA
double a = (Math.Atan(yA / xA) - Math.Atan(yB / xB)) * 180 / Math.PI;
femm.mi_addArcEx(xB, yB, xA, yA, a, 1, Group_Lines_Stator);
//DC'
femm.mi_addArcEx(xD, yD, xCC, yCC, 90, 30, Group_Lines_Stator);
//EF
femm.mi_addArcEx(xF, yF, xE, yE, 90, 30, Group_Lines_Stator);
//// the coil
femm.mi_addSegmentEx(xD2, yD2, xE2, yE2, Group_Lines_Stator);
femm.mi_addSegmentEx(xF2, yF2, xF2, 0, Group_Lines_Stator);
femm.mi_addSegmentEx(xCC2, yCC2, xCC2, 0, Group_Lines_Stator);
//CC2-D2
femm.mi_addArcEx(xD2, yD2, xCC2, yCC2, 90, 30, Group_Lines_Stator);
//EF
femm.mi_addArcEx(xF2, yF2, xE2, yE2, 90, 30, Group_Lines_Stator);
////// mirrored half to one
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Stator);
femm.mi_mirror(0, 0, 1, 0, FEMM.EditMode.group);
//////// Build Q slots (copy)
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Stator);
femm.mi_selectgroup(Group_BlockLabel_Wire);
if (fullbuild)
{
femm.mi_copyrotate(0, 0, 360.0 / Q, Q - 1, FEMM.EditMode.group);
}
else
{
femm.mi_copyrotate(0, 0, 360.0 / Q, Q / (2 * Rotor.p) - 1, FEMM.EditMode.group);
// rotate so they match with rotor
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Stator);
femm.mi_selectgroup(Group_BlockLabel_Wire);
// rotate angle to
double shiftangle = -Rotor.alphaDegree + 180.0 / Q;
femm.mi_moverotate(0, 0, shiftangle, FEMM.EditMode.group);
}
////// Block labels (steel)
femm.mi_addBlockLabelEx((xF + Rstator) / 2, 0, SteelMaterialName, Group_BlockLabel_Steel);
/////// Stator outer lines (2 arcs)
if (fullbuild)
{
femm.mi_addArcEx(Rstator, 0, -Rstator, 0, 180, 10, Group_Lines_Stator);
femm.mi_addArcEx(-Rstator, 0, Rstator, 0, 180, 10, Group_Lines_Stator);
}
else
{
femm.mi_addArcEx(Rstator * Math.Cos(Rotor.alpha), -Rstator * Math.Sin(Rotor.alpha),
Rstator * Math.Cos(Rotor.alpha), Rstator * Math.Sin(Rotor.alpha), 2 * Rotor.alphaDegree, 10, Group_Lines_Stator);
}
// Set boundary condition for outline stator
femm.mi_clearselected();
if (fullbuild)
{
femm.mi_selectarcsegment(0, Rstator);
femm.mi_selectarcsegment(0, -Rstator);
}
else
{
femm.mi_selectarcsegment(Rstator, 0);
}
femm.mi_setarcsegmentprop(10, BoundaryProperty, false, Group_Lines_Stator);
/////// Wire, circuits in slot
foreach (Circuit c in circuits)
{
femm.mi_addcircprop(c.name, c.current, c.circuitType);
}
double r = (xD + xE) / 2;
foreach (Coil sci in coils)
{
int i = coils.IndexOf(sci);
if (fullbuild)
{
//angle go clockwise from 3 o'clock (=0 degree in decarter),
double aa = -2 * Math.PI * i / Q;
double x = r * Math.Cos(aa);
double y = r * Math.Sin(aa);
femm.mi_addBlockLabelEx(x, y, WireMaterialName, Group_BlockLabel_Wire, sci.inCircuit, sci.Nturns);
}
else
{
//angle go clockwise from 3 o'clock (=0 degree in decarter), shift +pi/Q (to match rotor)
int nn = Q / (2 * Rotor.p);
double aa = -2 * Math.PI * i / Q + (nn % 2 == 0 ? Math.PI / Q : 0);
double x = r * Math.Cos(aa);
double y = r * Math.Sin(aa);
if (aa > -Rotor.alpha || aa < -2 * Math.PI + Rotor.alpha)
{
femm.mi_addBlockLabelEx(x, y, WireMaterialName, Group_BlockLabel_Wire, sci.inCircuit, sci.Nturns);
}
}
}
if (fullbuild)
{
//pre-rotate stator (fullbuild only)
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines_Stator);
femm.mi_selectgroup(Group_BlockLabel_Wire);
femm.mi_selectgroup(Group_BlockLabel_Steel);
femm.mi_moverotate(0, 0, PreRotateAngle, FEMM.EditMode.group);
}
if (!fullbuild)
{
//build boundary of motor: 2 lines, anti-periodic
String boundaryName = "stator-apb-1";
double x1 = Rinstator * Math.Cos(Rotor.alpha);
double y1 = Rinstator * Math.Sin(Rotor.alpha);
double x2 = Rstator * Math.Cos(Rotor.alpha);
double y2 = Rstator * Math.Sin(Rotor.alpha);
femm.mi_addSegmentEx(x1, y1, x2, y2, Group_Lines_Stator);
femm.mi_addSegmentEx(x1, -y1, x2, -y2, Group_Lines_Stator);
femm.mi_addboundprop_AntiPeriodic(boundaryName);
femm.mi_clearselected();
femm.mi_selectsegment(x2, y2);
femm.mi_selectsegment(x2, -y2);
femm.mi_setsegmentprop(boundaryName, 0, true, false, Group_Lines_Stator);
}
}
/// <summary>
/// Call this AFTER rotating rotor to make sure boundary conditional in airgap is solid
/// Assuming the file FEMM was created using the same motor
/// </summary>
public override void AddBoundaryAtAngle(double rotateAngleDeg, FEMM femm = null)
{
if (Motor.GeneralParams.FullBuildFEMModel)
{
return;
}
if (femm == null)
{
femm = FEMM.DefaultFEMM;
}
var Rotor = Motor.Rotor;
var Stator = Motor.Stator;
//build boundary of motor: 2 lines, anti-periodic
String[] boundaryNames = new String[] { "airgap-apb-1", "airgap-apb-2", "airgap-apb-3" };
int[] Group_Lines = { Group_Lines_Airgap + 1,
Group_Lines_Airgap + 2,
Group_Lines_Airgap + 3 };
// re-add boundary (airgap)
double rotateAngleRad = rotateAngleDeg * Math.PI / 180;
double x1 = Rotor.RGap * Math.Cos(Rotor.alpha + rotateAngleRad);
double y1 = Rotor.RGap * Math.Sin(Rotor.alpha + rotateAngleRad);
double x2 = (Rotor.RGap + delta / 2) * Math.Cos(Rotor.alpha + rotateAngleRad);
double y2 = (Rotor.RGap + delta / 2) * Math.Sin(Rotor.alpha + rotateAngleRad);
double x3 = (Rotor.RGap + delta / 2) * Math.Cos(Rotor.alpha);
double y3 = (Rotor.RGap + delta / 2) * Math.Sin(Rotor.alpha);
double x4 = Stator.RGap * Math.Cos(Rotor.alpha);
double y4 = Stator.RGap * Math.Sin(Rotor.alpha);
// add segment
femm.mi_addSegmentEx(x1, y1, x2, y2, Group_Lines[0]);
femm.mi_addSegmentEx(x3, y3, x4, y4, Group_Lines[2]);
femm.mi_addArcEx(x3, y3, x2, y2, rotateAngleDeg, 1, Group_Lines[1]);
// add boundary
foreach (String bn in boundaryNames)
{
femm.mi_addboundprop_AntiPeriodic(bn);
}
// set boundary
for (int i = 0; i < Group_Lines.Count(); i++)
{
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines[i]);
femm.mi_setsegmentprop(boundaryNames[i], 0, true, false, Group_Lines[i]);
femm.mi_setarcsegmentprop(1, boundaryNames[i], false, Group_Lines[i]);
}
// copy boundary
femm.mi_clearselected();
femm.mi_selectgroup(Group_Lines[0]);
femm.mi_selectgroup(Group_Lines[1]);
femm.mi_selectgroup(Group_Lines[2]);
femm.mi_copyrotate(0, 0, -2 * Rotor.alphaDegree, 1, FEMM.EditMode.group);
// special case: airgap becomes 2 sections
if (Math.Abs(Math.Abs(rotateAngleDeg) - 2 * Rotor.alphaDegree) < 1e-8)
{
double x = (Rotor.RGap + delta * 0.2) * Math.Cos(rotateAngleRad);
double y = (Rotor.RGap + delta * 0.2) * Math.Sin(rotateAngleRad);
femm.mi_addBlockLabelEx(x, y, AirMaterialName, Group_Fixed_BlockLabel_Airgap);
}
base.AddBoundaryAtAngle(rotateAngleDeg, femm);
}
