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diff --git a/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb b/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb new file mode 100644 index 00000000..7a471548 --- /dev/null +++ b/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb @@ -0,0 +1,215 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 16: Power in AC Circuits" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 16.1, Page 329" + ] + }, + { + "cell_type": "code", + "execution_count": 6, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "(a) Apparent power, S = 250 VA\n", + "(b) Power Factor = 0.866\n", + "(c) Active Power, P = 216.5\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Initialisation\n", + "V=50 #Voltage\n", + "I=5 #Current in Ampere r.m.s\n", + "phase=30 #in degrees\n", + "\n", + "#Calculation \n", + "S=V*I #apparent power\n", + "pf=math.cos(phase*math.pi/180) #power factor\n", + "apf=S*pf #active power\n", + "\n", + "#Result\n", + "print'(a) Apparent power, S = %d VA'%S\n", + "print'(b) Power Factor = %.3f'%pf\n", + "print'(c) Active Power, P = %.1f'%apf" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 16.2, Page 331" + ] + }, + { + "cell_type": "code", + "execution_count": 16, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + " Apparent Power, P = 2000 W\n", + " Active Power, P = 1500 W\n", + " Reactive Power, Q = 1322 var\n", + " Current I = 8.33 A\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Initialisation\n", + "pf=0.75 #power factor\n", + "S=2000 #apparent power in VA\n", + "V=240 #Voltage in volts\n", + "\n", + "#Calculation \n", + "apf=S*pf #active power\n", + "sin=math.sqrt(1-(pf**2)) \n", + "Q=S*sin #Reactive Power\n", + "I=S*V**-1 #Current\n", + "#Result\n", + "print' Apparent Power, P = %d W'%S\n", + "print' Active Power, P = %d W'%apf\n", + "print' Reactive Power, Q = %d var'%Q\n", + "print' Current I = %.2f A'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 16.3, Page 333" + ] + }, + { + "cell_type": "code", + "execution_count": 19, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + " Apparent Power, S = 1500 W\n", + " Active Power, P = 1500 W\n", + " Reactive Power, Q = 1322 var\n", + " Current I = 6.25 A\n" + ] + } + ], + "source": [ + "import math\n", + "\n", + "#Initialisation\n", + "pf=0.75 #power factor\n", + "S=1500 #apparent power in W\n", + "V=240 #Voltage in volts\n", + "P1 = 2000 #apparent power\n", + "P2 = 1500 #active power\n", + "Q = 1322 #reactive power\n", + "I = 8.33 #current in amp\n", + "f=50 #frequency in hertz\n", + "\n", + "#Calculation \n", + "Xc=V**2/Q #reactive capacitance\n", + "C=1/(Xc*2*math.pi*f) #capacitance\n", + "I=S*V**-1 #current\n", + "\n", + "#Result\n", + "print' Apparent Power, S = %d W'%S\n", + "print' Active Power, P = %d W'%apf\n", + "print' Reactive Power, Q = %d var'%Q\n", + "print' Current I = %.2f A'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 16.4, Page 335" + ] + }, + { + "cell_type": "code", + "execution_count": 24, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Zl = (50+20j)\n" + ] + } + ], + "source": [ + "import math\n", + "import numpy as np\n", + "\n", + "#Initialisation\n", + "Zo=complex(50,-20) #complex form of output impedance\n", + "\n", + "#Calculation \n", + "Zl=np.conjugate(Zo) #complex form of Load impedance\n", + "\n", + "#Result\n", + "print'Zl = %s'%Zl" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], + "source": [] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python [Root]", + "language": "python", + "name": "Python [Root]" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 2 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython2", + "version": "2.7.12" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |