From 92cca121f959c6616e3da431c1e2d23c4fa5e886 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Tue, 7 Apr 2015 15:58:05 +0530 Subject: added books --- _Power_Electronics/Chapter10_4.ipynb | 228 +++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100755 _Power_Electronics/Chapter10_4.ipynb (limited to '_Power_Electronics/Chapter10_4.ipynb') diff --git a/_Power_Electronics/Chapter10_4.ipynb b/_Power_Electronics/Chapter10_4.ipynb new file mode 100755 index 00000000..cbc3cb90 --- /dev/null +++ b/_Power_Electronics/Chapter10_4.ipynb @@ -0,0 +1,228 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 10 : Cycloconverters" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 10.2, Page No 594" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "V_s=230.0\n", + "V_m=math.sqrt(2)*V_s\n", + "R=10.0\n", + "a=30.0\n", + "\n", + "#Calculations\n", + "V_or=(V_m/math.sqrt(2))*math.sqrt((1/math.pi)*(math.pi-a*math.pi/180+math.sin(math.radians(2*a))/2))\n", + "I_or=V_or/R \n", + "I_s=I_or\n", + "pf=(I_or**2*R)/(V_s*I_s) \n", + "\n", + "\n", + "#Results\n", + "print(\"rms value of o/p current=%.2f A\" %I_or)\n", + "print(\"rms value of o/p current for each convertor=%.2f A\" %(I_or/math.sqrt(2)))\n", + "print(\"rms value of o/p current for each thyristor=%.3f A\" %(I_or/2))\n", + "print(\"i/p pf=%.4f\" %pf)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "rms value of o/p current=22.67 A\n", + "rms value of o/p current for each convertor=16.03 A\n", + "rms value of o/p current for each thyristor=11.333 A\n", + "i/p pf=0.9855\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 10.4, Page No 604" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "V_s=400.0\n", + "V_ph=V_s/2\n", + "a=160.0\n", + "\n", + "#Calculations\n", + "r=math.cos(math.radians(180-a))\n", + "m=3\n", + "V_or=r*(V_ph*(m/math.pi)*math.sin(math.pi/m)) \n", + "R=2\n", + "X_L=1.5\n", + "th=math.degrees(math.atan(X_L/R))\n", + "Z=math.sqrt(R**2+X_L**2)\n", + "I_or=V_or/Z \n", + "P=I_or**2*R \n", + "\n", + "#Results\n", + "print(\"rms o/p voltage=%.3f V\" %V_or)\n", + "print(\"rms o/p current=%.2f A\" %I_or)\n", + "print(\"phase angle of o/p current=%.2f deg\" %-th)\n", + "print(\"o/p power=%.2f W\" %P)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "rms o/p voltage=155.424 V\n", + "rms o/p current=62.17 A\n", + "phase angle of o/p current=-36.87 deg\n", + "o/p power=7730.11 W\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 10.5 Page No 604" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "V_s=400.0\n", + "V_ph=V_s/2\n", + "V_l=V_ph*math.sqrt(3)\n", + "a=160.0\n", + "\n", + "#Calculations\n", + "r=math.cos(math.radians(180-a))\n", + "m=6\n", + "V_or=r*(V_l*(m/math.pi)*math.sin(math.pi/m)) \n", + "R=2\n", + "X_L=1.5\n", + "th=math.degrees(math.atan(X_L/R))\n", + "Z=math.sqrt(R**2+X_L**2)\n", + "I_or=V_or/Z \n", + "P=I_or**2*R \n", + "\n", + "#Results\n", + "print(\"rms o/p voltage=%.2f V\" %V_or)\n", + "print(\"rms o/p current=%.2f A\" %I_or)\n", + "print(\"phase angle of o/p current=%.2f deg\" %-th)\n", + "print(\"o/p power=%.2f W\" %P)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "rms o/p voltage=310.85 V\n", + "rms o/p current=124.34 A\n", + "phase angle of o/p current=-36.87 deg\n", + "o/p power=30920.44 W\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 10.7, Page No 605" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "V_l=400.0\n", + "V_ml=math.sqrt(2)*V_l\n", + "m=6\n", + "f=50.0\n", + "w=2*math.pi*f\n", + "L=.0012\n", + "I=40.0\n", + "\n", + "#Calculations\n", + "V_or1=(V_ml*(m/math.pi)*math.sin(math.pi/m))*math.cos(math.radians(a))\n", + "V_omx1=V_or1-3*w*L*I/math.pi\n", + "V_rms1=V_omx1/math.sqrt(2) \n", + "a2=30.0\n", + "V_or2=(V_ml*(m/math.pi)*math.sin(math.pi/m))*math.cos(math.radians(a))\n", + "V_omx2=V_or2-3*w*L*I/math.pi\n", + "V_rms2=V_omx2/math.sqrt(2) \n", + "\n", + "\n", + "#Results\n", + "print(\"for firing angle=0deg\")\n", + "a1=0\n", + "print(\"rms value of load voltage=%.2f V\" %V_rms2)\n", + "print(\"for firing angle=30deg\")\n", + "print(\"rms value of load voltage=%.2f V\" %V_rms2)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "for firing angle=0deg\n", + "rms value of load voltage=-369.12 V\n", + "for firing angle=30deg\n", + "rms value of load voltage=-369.12 V\n" + ] + } + ], + "prompt_number": 4 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit