BLDCM

Brushless DC/AC machine
Inputs(5) i1 i2 i3 w K
Parameters(1) p1
Default p1=1,
Select from Components/Blocks/Machines
Function The output equals the electric torque produced by the machine. The inputs are the three phase currents, the angular speed of the rotor and the machine constant for the calculation of the torque and the produced EMF.

u1:=K*sin(angle);
u2:=K*sin(angle-(2*PI/3));
u3:=K*sin(angle-(4*PI/3));

if(p1=0)then
  begin
  if(u1 < 0) then u1:=K else u1:=-K;
  if(u2 < 0) then u2:=K else u2:=-K;
  if(u3 < 0) then u3:=K else u3:=-K;
  end;

if(p1=1)then
  begin
  if(u1 < 0) then u1:=K else u1:=0;
  if(u2 < 0) then u2:=K else u2:=0;
  if(u3 < 0) then u3:=K else u3:=0;
  end;

T=u1*i1+u2*i2+u3*i3


Use an INT_VAR block to get the EMF voltages and position of the rotor:

INT_VAROutput
p1=1u1
p1=2u2
p1=3u3
p1=4Position of the rotor (in Radians)
p1=5Rotor position polar x-coordinate
p1=6Rotor position polar y-coordinate


p1=0 Brushless DC machine
p1=1 Brushless AC machine
Special You can use the block INVCTRL for controlling the inverter to drive the BLDCM
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