Induction Motor-IRTF

Category: Toolbox > eDrives > Motors

Inputs:

      U_s: Input voltage vector for motor in alpha-beta convention. 

      T_l: Load torque.

      Rotor_lock: Clamp enable for motor shaft. When input is set to 1, the shaft speed is forced to zero. (binary input)

Outputs:

      psi_R: Rotor Flux vectors in d-q axes coordinates.

      i_s: Output current vector for stator currents in alpha-beta coordinates.

      T_me: Mechanical shaft torque of the motor.

      w_me: Mechanical shaft speed of the rotor.

Description: The Induction Motor-IRTF block is a motor model for a three phase AC Induction machine. This is a mathematical model of an electrical machine based on the Ideal Rotating Transformer model. A four parameter model representation, as shown below, is used.

 

 

Graphical user interface, application

Description automatically generated

Leakage Inductance (H): Indicates the combined (stator/rotor) stator referred  leakage inductance.

Magnetizing Inductance (H): Indicates the stator referred  magnetizing inductance %FontSize=10
%TeXFontSize=10
\documentclass{article}
\usepackage{amsmath}
\pagestyle{empty}
\begin{document}
$
L_M
$
\end{document}.

Number of Pole Pairs: Indicates the number of motor pole pairs.

Rotational Inertia: Indicates the inertia of the rotor (plus mechanical load if attached).

Rotor Resistance (ohms): Indicates the stator referred rotor resistance %FontSize=10
%TeXFontSize=10
\documentclass{article}
\usepackage{amsmath}
\pagestyle{empty}
\begin{document}
$
R_R
$
\end{document}.

Stator Resistance (ohms): Indicates the stator winding resistance %FontSize=10
%TeXFontSize=10
\documentclass{article}
\usepackage{amsmath}
\pagestyle{empty}
\begin{document}
$
R_s
$
\end{document}.

Slip (shown in the equivalent model above): Defined as %FontSize=10
%TeXFontSize=10
\documentclass{article}
\usepackage{amsmath}
\pagestyle{empty}
\begin{document}
$
s=\frac{n_{syn}-n_{me}}{n_{syn}}
$
\end{document} where %FontSize=10
%TeXFontSize=10
\documentclass{article}
\usepackage{amsmath}
\pagestyle{empty}
\begin{document}
$
n_{syn}, n_{me}
$
\end{document} represent the synchronous and mechanical shaft speed, respectively.