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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 9: DC Machines in Steady State"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 9.1: Finding_electromagnetic_torque.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// Caption: Finding electromagnetic torque\n",
"clear;\n",
"close;\n",
"clc;\n",
"V_t=128;\n",
"E_a=125;\n",
"R_a=.02;\n",
"I_a=(V_t-E_a)/R_a;//armature current\n",
"\n",
"P_t=V_t*I_a;//terminal power;\n",
"P_e=E_a*I_a;//electromagnetic power;\n",
"T=P_e/(100*%pi);//torque\n",
"disp(T,'electromagnetic torque=');"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 9.2: Finding_terminal_voltage.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// Caption: Finding terminal voltage\n",
"clear;\n",
"close;\n",
"clc;\n",
"V=274;//voltage when Ia=0\n",
"E_a=274*1150/1200;//actual emf\n",
"V_t=E_a-405*(0.025+0.005);//terminal voltage"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 9.4: Finding_speed_and_output_power.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// Caption: Finding speed and output power\n",
"clear;\n",
"close;\n",
"clc;\n",
"E_ao=250*1200/1100;//at 1200 r/min\n",
"E_a=250-400*.025;//at Ia=400A\n",
"n=240*1200/261;//actual spped\n",
"P_em=240*400;\n",
"disp(P_em,'electromagnetic power=')"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Scilab",
"language": "scilab",
"name": "scilab"
},
"language_info": {
"file_extension": ".sce",
"help_links": [
{
"text": "MetaKernel Magics",
"url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
}
],
"mimetype": "text/x-octave",
"name": "scilab",
"version": "0.7.1"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
