AIM Slip Ring - MapleSim Help

AIM Slip Ring

Asynchronous induction machine with slip-ring rotor

Description

The AIM Slip Ring component models a three-phase asynchronous induction machine with a slipring rotor. The resistance and stray inductance of the stator and rotor are modeled directly in the stator and rotor phases, with a space phasor transformation and a stator-fixed Air Gap model.

The following losses are modeled:

 • heat losses in the temperature dependent stator winding resistances
 • heat losses in the temperature dependent rotor winding resistances
 • friction losses
 • core losses (only eddy current losses, no hysteresis losses)

The turnsRatio parameter can be obtained from the following relationship at standstill with open rotor circuit at nominal voltage and nominal frequency, using the locked-rotor voltage ${V}_{R}$, no-load stator current ${I}_{0}$: $\mathrm{turnsRatio}{V}_{R}={V}_{s}-\left({R}_{s}+j{X}_{s\sigma }\right){I}_{0}$.

Connections

 Name Description Modelica ID $\mathrm{flange}$ Shaft flange ${\mathrm{plug}}_{\mathrm{rn}}$ Negative rotor plug plug_rn ${\mathrm{plug}}_{\mathrm{rp}}$ Positive rotor plug plug_rp ${\mathrm{plug}}_{\mathrm{sn}}$ Negative stator plug plug_sn ${\mathrm{plug}}_{\mathrm{sp}}$ Positive stator plug plug_sp $\mathrm{support}$ Support at which the reaction torque is acting support $\mathrm{thermalPort}$ thermalPort

Parameters

General Parameters

 Name Default Units Description Modelica ID ${f}_{s,\mathrm{nom}}$ $50$ $\mathrm{Hz}$ Nominal frequency fsNominal ${J}_{r}$ $0.29$ $\mathrm{kg}{m}^{2}$ Rotor moment of inertia Jr ${J}_{s}$ ${J}_{r}$ $\mathrm{kg}{m}^{2}$ Stator moment of inertia Js $p$ $2$ Number of pole pairs (Integer) p ${T}_{r,\mathrm{oper}}$ $293.15$ $K$ Operational temperature of rotor resistance TrOperational ${T}_{s,\mathrm{oper}}$ $293.15$ $K$ Operational temperature of stator resistance TsOperational ${V}_{r,\mathrm{locked}}$ [1] $V$ Locked-rotor voltage per phase VrLockedRotor ${V}_{s,\mathrm{nom}}$ $100$ $V$ Nominal stator voltage per phase VsNominal Turns Ratio $1$ Stator turns / rotor turns  (effective number of) turnsRatio Use Support Flange $\mathrm{false}$ True (checked) means enable stator support flange useSupport Use Thermal Port $\mathrm{false}$ True (checked) means thermal port is enabled useThermalPort Use Turns Ratio $\mathrm{true}$ True (checked) means use Turns Ratio parameter useTurnsRatio

[1] $\frac{200\mathrm{\pi }{f}_{s,\mathrm{nom}}{L}_{m}}{\sqrt{{R}_{s}^{2}+4{\mathrm{\pi }}^{2}{f}_{s,\mathrm{nom}}^{2}\left({L}_{m}^{2}+{L}_{s\sigma }^{2}\right)}}$

Brush Losses

 Name Default Units Description Modelica ID $V$ $0$ $V$ Total voltage drop of brushes, if ${i}_{\mathrm{brush}}>{I}_{\mathrm{linear}}$ V ${I}_{\mathrm{linear}}$ $0.01{I}_{{a}_{\mathrm{nom}}}$ $A$ Current indicating linear voltage region of brush voltage drop ILinear

See Brush for details of the brush loss model.

Friction Losses

 Name Default Units Description Modelica ID ${P}_{\mathrm{ref}}$ $0$ $W$ Reference friction losses PRef ${\omega }_{\mathrm{ref}}$ ${\omega }_{\mathrm{nom}}$ $\frac{\mathrm{rad}}{s}$ Reference angular velocity wRef ${p}_{\omega }$ $2$ $V$ Exponent of friction power_w

See Friction for details of the friction loss model.

Rotor Core Losses

 Name Default Units Description Modelica ID ${P}_{\mathrm{ref}}$ $0$ $W$ Reference rotor core losses PRef ${V}_{\mathrm{ref}}$ $1$ $V$ Reference RMS voltage VRef ${\omega }_{\mathrm{ref}}$ $1$ $\frac{\mathrm{rad}}{s}$ Reference angular velocity wRef

See Core for details of the core loss model.

Stator Core Losses

 Name Default Units Description Modelica ID ${P}_{\mathrm{ref}}$ $0$ $W$ Reference rotor core losses PRef ${V}_{\mathrm{ref}}$ $V$ Reference RMS voltage VRef ${\omega }_{\mathrm{ref}}$ $2\pi {f}_{s,\mathrm{nom}}$ $\frac{\mathrm{rad}}{s}$ Reference angular velocity wRef

See Core for details of the core loss model.

Nominal Resistances And Inductances Parameters

 Name Default Units Description Modelica ID ${\mathrm{\alpha }}_{r}$ 0 $\frac{1}{K}$ Temperature coefficient of rotor resistance at 20 degC alpha20r ${\mathrm{\alpha }}_{s}$ 0 $\frac{1}{K}$ Temperature coefficient of stator resistance at 20 degC alpha20s ${L}_{m}$ [1] $H$ Main field inductance Lm ${L}_{r\sigma }$ [1] $H$ Rotor stray inductance per phase Lrsigma ${L}_{r,0}$ ${L}_{r\sigma }$ $H$ Rotor zero sequence inductance w.r.t. rotor side Lrzero ${L}_{s\sigma }$ [1] $H$ Stator stray inductance per phase Lssigma ${L}_{s,0}$ ${L}_{s\sigma }$ $H$ Stator zero sequence inductance Lszero ${R}_{r}$ $0.04$ $\mathrm{\Omega }$ Warm rotor resistance per phase Rr ${R}_{s}$ $0.03$ $\mathrm{\Omega }$ Warm stator resistance per phase Rs ${T}_{r,\mathrm{ref}}$ $293.15$ $K$ Reference temperature of rotor resistance TrRef ${T}_{s,\mathrm{ref}}$ $293.15$ $K$ Reference temperature of stator resistance TsRef

[1] $1.5\frac{1-\sqrt{0.9333}}{\mathrm{\pi }{f}_{s,\mathrm{nom}}}$

 Modelica Standard Library The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.