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| author | Thomas Stephen Lee | 2015-08-28 16:53:23 +0530 |
|---|---|---|
| committer | Thomas Stephen Lee | 2015-08-28 16:53:23 +0530 |
| commit | db0855dbeb41ecb8a51dde8587d43e5d7e83620f (patch) | |
| tree | b95975d958cba9af36cb1680e3f77205354f6512 /Power_Electronics/Power_electronics_ch_7_1.ipynb | |
| parent | 5a86a20b9de487553d4ef88719fb0fd76a5dd6a7 (diff) | |
| download | Python-Textbook-Companions-db0855dbeb41ecb8a51dde8587d43e5d7e83620f.tar.gz Python-Textbook-Companions-db0855dbeb41ecb8a51dde8587d43e5d7e83620f.tar.bz2 Python-Textbook-Companions-db0855dbeb41ecb8a51dde8587d43e5d7e83620f.zip | |
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Diffstat (limited to 'Power_Electronics/Power_electronics_ch_7_1.ipynb')
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diff --git a/Power_Electronics/Power_electronics_ch_7_1.ipynb b/Power_Electronics/Power_electronics_ch_7_1.ipynb deleted file mode 100755 index 7288e1e0..00000000 --- a/Power_Electronics/Power_electronics_ch_7_1.ipynb +++ /dev/null @@ -1,204 +0,0 @@ -{
- "metadata": {
- "name": ""
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "heading",
- "level": 1,
- "metadata": {},
- "source": [
- "Chapter 7 : Cycloconverters"
- ]
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "example 7.1, Page No.319"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# input voltage, SCR ratings and input power factors\n",
- "\n",
- "import math\n",
- "#variable declaration\n",
- "V = 250 # single phase supply voltage \n",
- "I = 50 # supply current\n",
- "pf = 0.8 # lagging power factor\n",
- "alfa = 0 # ideal SCR\n",
- "\n",
- "#calculations\n",
- "x = math.sqrt(2)\n",
- "x = math.floor(x*1000)/1000\n",
- "Vm = (V*math.pi*x)/(3*math.sin(math.pi/3))\n",
- "Vrms = Vm/math.sqrt(2)\n",
- "Irms = I*math.sqrt(2)/math.sqrt(3)\n",
- "y = math.sqrt(3)\n",
- "y = math.floor(y*1000)/1000\n",
- "piv = y*Vm\n",
- "piv = math.floor(piv*100)/100\n",
- "Ii = math.sqrt((I**2)/3)\n",
- "pipp = V*I*pf/3.0\n",
- "pf_i = pipp/(Vrms*Ii)\n",
- "\n",
- "#Result\n",
- "print(\"Vm = %f V\\nrms current rating of thyristor = %.1f A\\nPIV = %.2fV\\nRMS value of input current = %.1f A\"%(Vm,math.ceil(Irms),piv,Ii))\n",
- "print(\"Power input per phase = %.2f W\\nInput power factor = %.3f lagging.\"%(pipp,pf_i))"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Vm = 427.452050 V\n",
- "rms current rating of thyristor = 41.0 A\n",
- "PIV = 740.34V\n",
- "RMS value of input current = 28.9 A\n",
- "Power input per phase = 3333.33 W\n",
- "Input power factor = 0.382 lagging.\n"
- ]
- }
- ],
- "prompt_number": 32
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "example 7.2, Page No. 320"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#output voltage(referring ex 7.1)\n",
- "\n",
- "import math\n",
- "#variable declaration\n",
- "V = 250 # single phase supply voltage \n",
- "theta1 = 30 # firing angle 1\n",
- "theta2 = 45 # firing angle 2\n",
- "\n",
- "#calculations\n",
- "#(a)\n",
- "v1 = V*math.cos(theta1*math.pi/180)\n",
- "#(b)\n",
- "v2 = V*math.cos(theta2*math.pi/180)\n",
- "\n",
- "#Result\n",
- "print(\"(a) RMS value of output voltage = %.1f V\"%v1)\n",
- "print(\"(b) RMS value of output voltage = %.2f V\"%v2)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "(a) RMS value of output voltage = 216.5 V\n",
- "(b) RMS value of output voltage = 176.78 V\n"
- ]
- }
- ],
- "prompt_number": 35
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "example 7.3, Page No.320"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Output voltage for different firing angle\n",
- "\n",
- "import math\n",
- "#variable declaration\n",
- "Vrms = 230 # input voltage\n",
- "theta1 = 0 # firing angle 1\n",
- "theta2 = 30 # firing angle 2\n",
- "\n",
- "#calculation\n",
- "#(a)\n",
- "v1 = 6*math.sqrt(2)*Vrms*math.sin(math.pi/6)*math.cos(theta1*math.pi/180)/(math.pi*math.sqrt(2))\n",
- "#(b)\n",
- "v2 = 6*math.sqrt(2)*Vrms*math.sin(math.pi/6)*math.cos(theta2*math.pi/180)/(math.pi*math.sqrt(2))\n",
- "\n",
- "\n",
- "#Result\n",
- "print(\"(a) Vo = %.2f V\\n(b) Vo = %.1f V\"%(v1,v2))"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "(a) Vo = 219.63 V\n",
- "(b) Vo = 190.2 V\n"
- ]
- }
- ],
- "prompt_number": 37
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "example 7.4, Page No.320"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# supply voltage\n",
- "\n",
- "import math\n",
- "#variable declaration\n",
- "Vo = 200 # output voltage\n",
- "\n",
- "#Calculation\n",
- "Vi = Vo*(math.pi/3)/math.sin(math.pi/3)\n",
- "\n",
- "#Result\n",
- "print(\"RMS value of input voltage = %.2f V \"%Vi)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "RMS value of input voltage = 241.84 V \n"
- ]
- }
- ],
- "prompt_number": 38
- }
- ],
- "metadata": {}
- }
- ]
-}
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