SIMPLORER User Manual V6.0 - FER-a

DC Machine Nonlinear Electrical Excitation
SIMPLORER 6.0 — Manual 185
>>Basics>Circuit>Electrical Machines
The model represents a DC machine as a lumped circuit component. By proper connection of
armature and excitation circuit, separately excited, series and shunt machines can be modeled.
The component cannot be used with AC and DC simulation. See also “Model Limits of
DC Machine Models” on page 181.
Equation System
The equation system is implemented on condition of a nonlinear magnetic circuit (saturation)
and the resulting nonlinear excitation circuit inductivity. Index a represents the armature circuit
quantities, the index e the quantities of excitation circuit.
Voltage equations
dia() t
die() t
va() t = ia() t ⋅ R ------------- a + ⋅ L
dt a + Ψ( ie) ⋅ ω() t ve() t = ie() t ⋅ R ------------- e + ⋅ L
dt e( ie) Torque equation (electromagnetic developed “internal” torque)
mi() t = Ψi ( e)
⋅ ia() t
Motion equation
dω() t
------------dt
=
1
--( m
J i() t – mw() t )
Dialog Settings
� «Parameters»
Click the «Value» field of the corresponding parameter to define a value. Common parameter
types. Enter a numerical value, a variable, or an expression. Look the meaning up in the parameter
table below.
� «Initial Values»
Click the «Value» field of the corresponding parameter to define the initial values. Common
parameter types. Enter a numerical value, a variable, or an expression. The values are set only
once at simulation start. Look the meaning up in the parameter table below.
� «Angular Dimension»
In the list, select radians or degrees for the angular dimension. The dimension is valid for all
angle input quantities in the machine model.
«Excitation Inductance Characteristic»
Defines the machine characteristic L=f(i). Open the characteristic dialog or use the pin to define
a characteristic. See also “Separate Component Characteristic” on page 297.
«Magnetization Characteristic»
Defines the machine characteristic PSI=f(i). Open the characteristic dialog or use the pin to
define a characteristic. See also “Separate Component Characteristic” on page 297.
Component Parameters
Description [Unit] Parameter Name Data Type
Load Torque [Nm] LOAD real
Armature Resistance [Ω]
Sum of resistances of all windings of armarture circuit
RA real