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Diffstat (limited to '_Power_Electronics/Chapter10_4.ipynb')
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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": {}
+ }
+ ]
+}
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