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   <title>AC Induction Motor :: Blocks (Simulink&reg;)</title>
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  <b>VUT Brno<sup>&reg;</sup></b>
  <h1 class="reftitle">AC Induction Motor</h1>
    <p>Model of AC Induction Motor</p>
  <h2>Library</h2>
    <p>Electromechanical Drives</p>
  <h2>Description <span class="inlinemediaobject"></span></h2>
    <img src="ASM_Blocks.png" alt="">
    <p>Model of AC Induction Motor is in the five variants, created by </p>
    <ul type="disc">
        <li><p>Simulink blocks (AC Induction Motor Block)</p></li>
        <li><p>S-function Lvel-2 in language C as continous (AC Induction Motor C continous)</p></li>
        <li><p>S-function Lvel-2 in language C as discrete (AC Induction Motor C discrete)</p></li>
        <li><p>S-function Lvel-2 in language M as continous (AC Induction Motor M continous)</p></li>
        <li><p>S-function Lvel-2 in language M as discrete (AC Induction Motor M discrete)</p></li>
    </ul>
    <p>You can choose type T, Gamma or Inverse Gamma model. Inside structure is allways T-model with transfomation to chosen type.</p>

  <h2>Data Type Support</h2>
    <p> The block of Asynchronous motor accepts only one dimension input signals and any numeric data type supported by Simulink software. Outputs Stator flux and Rotor flux are complex signals.</p>
  
  <h2>Parameters and Dialog Box</h2>
    <p><img src="ASM_Main.png" alt=""></p>
    <dl>
        <dt><span class="term"><b>Type of model</b></span></dt>
            <dd><p> Choose one of T, Gamma or Inverse Gamma model. </p></dd>
        <dt><span class="term"><b>Input parameters</b></span></dt>
            <dd><p>Enter the value of parameters or mark checkbox, if you want created new input insted of parameter.</p></dd>
        <dt><span class="term"><b>Sample time (Only in discrete type of model)</b></span></dt>
            <dd><p>Enter the time interval between sample time hits. Model use Euler method.</p></dd>
        <dt><span class="term"><b>Non zeros initial conditions</b></span></dt>
            <dd><p>After this button is clicked, new window is opened. Enter the value of initial state variables. Default values of initial conditions are set to zero.</p></dd>
            <dd><img src="ASM_IC.png"  alt=""></dd>
        <dt><span class="term"><b>Output paramters</b></span></dt>
            <dd><p>You may add another outputs to block.</p></dd>
    </dl>
    
  <h2>Table of model parameters</h2>
    <img src="ASM_Table.png" alt="">
        
  <h2>Mathematical model</h2>
    <dl>
        <dt><span class="term"><b>T-model equations</b></span></dt>
            <dd><img src="ASM_Tmodel.bmp" alt=""></dd>
            <dd>where</dd>
            <dd><img src="ASM_where.bmp" alt=""></dd>
            <dd>Model use Park and Clarke transformation.</dd> <p></p>
        <dt><span class="term"><b>Transformation between models</b></span></dt>
            <table>
                <tr><td><dd>From T-model to Gamma model</dd></td> <td width="75"></td> <td>From T-model to Inverse Gamma model</td></tr>
            </table>
            <dd><img src="ASM_GInvG.bmp" alt=""></dd>
    </dl>
  <h2>See Also</h2>
    <p><a href="PMSM_Help.html"><tt>PMSM</tt></a>, <a href="SRM_Help.html"><tt>SRM</tt></a></p>
   
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  <!-- Last updated: 20 May 2010 -->