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diff --git a/Basics_of_Electrical_by_Electronics_and_Communication_Engineering/6-DC_Machines.ipynb b/Basics_of_Electrical_by_Electronics_and_Communication_Engineering/6-DC_Machines.ipynb new file mode 100644 index 0000000..59c3e7b --- /dev/null +++ b/Basics_of_Electrical_by_Electronics_and_Communication_Engineering/6-DC_Machines.ipynb @@ -0,0 +1,248 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 6: DC Machines" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.1: Generated_emf.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.1\n", +"clc;clear;close;\n", +"format('v',5);\n", +"P=4;//no. of poles\n", +"c=2;//no. of parallel paths\n", +"p=4/2;//no. of pair of poles\n", +"S=51;//no. of slots\n", +"C=12;//conductors per slot\n", +"N=900;//rpm(speed)\n", +"fi=25/1000;//Wb\n", +"Z=S*C;//total no. of conductors\n", +"E=2*Z/c*N*p/60*fi;//V\n", +"disp(E,'Generated emf(V)');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.2: Conductors_per_slot.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.2\n", +"clc;clear;close;\n", +"format('v',5);\n", +"P=8;//no. of poles\n", +"c=8;//no. of parallel paths\n", +"p=8/2;//no. of pair of poles\n", +"E=260;//V(generated emf)\n", +"fi=0.05;//Wb\n", +"S=120;//no. of slots\n", +"N=350;//rpm(speed)\n", +"Z=E/(2/c*N*p/60*fi);//V\n", +"disp(round(Z),'No. of conductors per slot');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.3: Generated_emf.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.3\n", +"clc;clear;close;\n", +"format('v',5);\n", +"Ra=0.1;//ohm(Armature resistance)\n", +"Vs=250;//V(supply voltage)\n", +"//part(a)\n", +"I=80;//A\n", +"Vdrop=Ra*I;//V\n", +"emf=Vs+Vdrop;//V(Generated emf)\n", +"disp(emf,'Part(a) Generated emf(V)');\n", +"//part(b)\n", +"I=60;//A(current taken by Motor)\n", +"Vdrop=Ra*I;//V\n", +"emf=Vs-Vdrop;//V(Generated emf)\n", +"disp(emf,'Part(b) Generated emf(V)');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.4: Calculate_speed.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.4\n", +"clc;clear;close;\n", +"format('v',5);\n", +"P=4;//no. of poles\n", +"Vs=440;//V\n", +"c=2;//no. of parallel paths\n", +"p=4/2;//no. of pair of poles\n", +"Ia=50;//A\n", +"Ra=0.28;//ohm\n", +"Z=888;//conductors\n", +"fi=0.023;//Wb\n", +"emf=Vs-Ia*Ra;//V\n", +"N=emf/(2*Z/c*p/60*fi);//rpm\n", +"disp(round(N),'Speed in rpm');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.5: Approximate_speed.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.5\n", +"clc;clear;close;\n", +"format('v',5);\n", +"N=900;//rpm\n", +"Vs=460;//V\n", +"Vs_new=200;//V\n", +"fi_ratio=0.7;//ratio of new flux to original flux\n", +"kfi=Vs/N;//for original flux\n", +"Nnew=Vs_new/kfi/fi_ratio;//rpm(new speed)\n", +"disp(round(Nnew),'Speed in rpm');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.6: SPeed_and_gross_torque.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.6\n", +"clc;clear;close;\n", +"format('v',5);\n", +"Ia=110;//A\n", +"Vs=480;//V\n", +"Ra=0.2;//ohm\n", +"P=6;//no. of poles\n", +"c=6;//no. of parallel paths\n", +"p=P/2;//no. of pair of poles\n", +"Z=864;//no. of conductors\n", +"fi=0.05;//Wb\n", +"emf=Vs-Ia*Ra;//V\n", +"N=emf/(2*Z/c*p/60*fi);//rpm\n", +"N=round(N);//rpm\n", +"disp(N,'(a) Speed in rpm');\n", +"Pm=Ia*emf;//W(Mechanical power developed)\n", +"M=Pm/(N/60)/(2*%pi);//Nm(Torque)\n", +"disp(M,'(b) Gross torque developed(Nm)');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.7: Power_generated.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Ex 6.7\n", +"clc;clear;close;\n", +"format('v',6);\n", +"N=15;//rps\n", +"M=2*1000;//Nm(Torque required)\n", +"Loss=8*1000;//W\n", +"P=2*%pi*M*N;//W(Power required)\n", +"Pa=P-Loss;//W(Power generated in armature)\n", +"disp(Pa/1000,'Power generated in armature(kW)');" + ] + } +], +"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 +} |