Stepper Permanent Magnet
Permanent magnet stepper motor
Description
Equations
Connections
Parameters
The Stepper Permanent Magnet (or Stepper Motor PM) component models a two-phase permanent magnet stepper machine. The winding resistances and inductances of the two phase windings are identical. The losses in the winding resistances only are taken into account; saturation is not modeled.
Jω.+Bω=−KmiasinNrθ+KmibcosNrθ−τ
Lia.+Ria=vap−van+KmωsinNrθ
Lib.+Rib=vbp−vbn−KmωcosNrθ
ω=θ.
ia=iap=−ian
ib=ibp=−ibn
θ=φrflange
τ=τrflange
Name
Modelica ID
negpina
Negative pin winding a
neg_pin_a
pospina
Positive pin winding a
pos_pin_a
negpinb
Negative pin winding b
neg_pin_b
pospinb
Positive pin winding b
pos_pin_b
rflange
Shaft end
Default
Units
J
0.005
kgm2
Rotor moment of inertia
B
0.08
Nmsrad
Rotor damping
R
1.55
Ω
Winding resistance
L
0.015
H
Winding inductance
Km
0.19
NmA
Machine torque constant
Nr
50
1
Number of rotor teeth
See Also
Electrical Library
Electrical Machines
Electrical Machines Stepper Machines
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