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diff --git a/Introduction_to_Electric_Drives_by_J_S_Katre/1-Thyristors.ipynb b/Introduction_to_Electric_Drives_by_J_S_Katre/1-Thyristors.ipynb new file mode 100644 index 0000000..cbb9bb0 --- /dev/null +++ b/Introduction_to_Electric_Drives_by_J_S_Katre/1-Thyristors.ipynb @@ -0,0 +1,219 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 1: Thyristors" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 1.11_1: peak_reverse_recovery_current.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example 1.11.1: peak reverse recovery current\n", +"clc;\n", +"clear;\n", +"close;\n", +"//given data :\n", +"itt=10;// time in micro seconds\n", +"qtt=150;//charge in micro colums\n", +"prrc=((2*qtt)/itt);//peak reverse recovery current in amperes\n", +"disp(prrc,'peak reverse recovery current in amperes')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 1.18_1: voltage.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example 1.18.1: voltage of the capacitor\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',7)\n", +"r=10;//in ohms\n", +"l=10;///inductance in mH\n", +"c=10;//capacitance in micro farads\n", +"v=100;//in volts\n", +"t=((%pi)/(sqrt((1/(l*10^-3*c*10^-6))-(r^2/(4*(l*10^-3)^2)))));// time in seconds\n", +"vc= v*(1-cosd(t/(sqrt(l*10^-3*c*10^-6))));//in volts\n", +"disp(vc,'the capacitor voltage in volts is')\n", +"//answer is wrong in the textbook" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 1.18_2: voltage_of_the_capacitor.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example 1.18.2: voltage of the capacitor\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',7)\n", +"r=15;//in ohms\n", +"l=12;///inductance in mH\n", +"c=8;//capacitance in micro farads\n", +"v=100;//in volts\n", +"t=((%pi)/(sqrt((1/(l*10^-3*c*10^-6))-(r^2/(4*(l*10^-3)^2)))));// time in seconds\n", +"vc= v*(1-cosd(t/(sqrt(l*10^-3*c*10^-6))));//in volts\n", +"disp(vc,'the capacitor voltage in volts is')\n", +"//this question is not solved in the textbook" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 1.20_1: turn_off_time.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example 1.20.1: Turn Off Time\n", +"clc;\n", +"clear;\n", +"close;\n", +"//given data :\n", +"format('v',6)\n", +"Vs=200;//in volts\n", +"R1=10;// in ohm\n", +"R2=R1;\n", +"C=5;// in micro-farad\n", +"Tc=(R1*C)/1.44;\n", +"disp(Tc,'The Circuit Turn Off Time,Tc(micro-sec) = ')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 1.20_2: state_thyristor_current_and_circuit_turn_off_time.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example 1.20.2: Peak Current and turn off time\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',6)\n", +"//given data :\n", +"Vs=200;//in volts\n", +"R1=10;// in ohm\n", +"R2=R1;\n", +"Vc=200;//in volts\n", +"C=10;// in micro-farad\n", +"I1=Vs/R1;\n", +"I2=(Vs+Vc)/R2;\n", +"It1=I1+I2;\n", +"disp(It1,'Peak Current,It1(A) = ')\n", +"Tc=(R1*C)/1.44;\n", +"disp(Tc,'The Circuit Turn Off Time,Tc(micro-sec) = ')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 1.21_1: inductance_and_capacitance.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example 1.21.1: L and C\n", +"clc;\n", +"clear;\n", +"close;\n", +"//given data :\n", +"V=100;// in volts\n", +"Irm=40;// in A\n", +"tq=40;// in micro-sec\n", +"Del_t=(50/100)*tq;// in micro-sec\n", +"C=(Irm*(tq+Del_t))/V;\n", +"disp(C,'capacitance,C(micro-farad) = ')\n", +"L_min=(V/Irm)^2*C;\n", +"disp(L_min,'minimum inductance,L_min(micro-Henry) = ')\n", +"T=2.5;// assume one cycle period in ms\n", +"L_max=((0.01*(T*10^-3)^2)/(%pi^2*C*10^-6))*10^6;\n", +"disp(L_max,'Maximum inductance,L_max(micro-Henry) = ')" + ] + } +], +"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 +} |