From d36fc3b8f88cc3108ffff6151e376b619b9abb01 Mon Sep 17 00:00:00 2001 From: kinitrupti Date: Fri, 12 May 2017 18:40:35 +0530 Subject: Revised list of TBCs --- .../Chapter_16.ipynb | 144 --------------------- 1 file changed, 144 deletions(-) delete mode 100755 Electrical_Machines_by_M._V._Despande/Chapter_16.ipynb (limited to 'Electrical_Machines_by_M._V._Despande/Chapter_16.ipynb') diff --git a/Electrical_Machines_by_M._V._Despande/Chapter_16.ipynb b/Electrical_Machines_by_M._V._Despande/Chapter_16.ipynb deleted file mode 100755 index e95791d2..00000000 --- a/Electrical_Machines_by_M._V._Despande/Chapter_16.ipynb +++ /dev/null @@ -1,144 +0,0 @@ -{ - "metadata": { - "name": "", - "signature": "sha256:ba24a460b17bf7079ac4093071a48c79f514703fb164d80eae9ed12c922c8957" - }, - "nbformat": 3, - "nbformat_minor": 0, - "worksheets": [ - { - "cells": [ - { - "cell_type": "heading", - "level": 1, - "metadata": {}, - "source": [ - "CHAPTER 16 - SINGLE-PHASE INDUCTION MOTORS" - ] - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example E1 - Pg 371" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "#Caption:Find (a)Input Current (b)Power factor (c)Input power (d)Torque due to forward revolving field (e)Torque due to backward revovlving field (f)Net torque (g)Output And (h)Efficiency\n", - "#Exa:16.1\n", - "import math,cmath\n", - "from math import cos,atan\n", - "Pi=750.#Power of Single phase induction motor(in Watts)\n", - "p=4.#Number of poles\n", - "f=50.#Frequency(in hertz)\n", - "V=230.#Voltage supplied to motor(in volts)\n", - "R1=2.#Resistance of stator(in ohm)\n", - "X1=2.6#Reactance of stator(in ohm)\n", - "Wf=25.#Friction and winding loss(in Watts)\n", - "R2=3.8#Resistance of rotor(in ohm)\n", - "X2=2.6#Reactance of rotor(in ohm)\n", - "Xm=56.#Magnetising Reactance(in ohms)\n", - "r2=1.9#Imaginary resistance of rotor(in ohm)\n", - "x2=1.3#Imaginary reactance of rotor(in ohm)\n", - "xm=28.#Imaginary magnetising reactance(in ohm)\n", - "s=0.05#Slip\n", - "Z1=R1+(1j*X1)\n", - "Z2=((1j*xm)*((r2/s)+(1j*x2)))/((r2/s)+(1j*(x2+xm)))\n", - "Z3=((1j*xm)*((r2/(2-s))+(1j*x2)))/((r2/(2-s))+(1j*(x2+xm)))\n", - "Z=Z1+Z2+Z3\n", - "#I=V/Z\n", - "I=9.28\n", - "print '(a)Input Current(in A)=',I\n", - "#pf=cos(atan(Z.imag/Z.real)*57.3)*57.3\n", - "pf=9.581\n", - "print '(b)Power factor=',pf\n", - "#Wp=V*pf*(I*I.conjugate())*5\n", - "Wp=1127.8\n", - "print '(c)Input power(in watts)=',Wp\n", - "z2=math.sqrt(((r2/s)**2)+((x2)**2))\n", - "v2=(I*I.conjugate())*(Z2*Z2.conjugate())\n", - "i2=v2/z2\n", - "z3=math.sqrt(((r2/(2-s))**2)+((x2)**2))\n", - "v3=(I*I.conjugate())*(Z3*Z3.conjugate())\n", - "i3=v3/z3\n", - "#Tf=((i2)**2.)*(r2/s)\n", - "Tf=919.8\n", - "print '(d)Torque due to forward field(in Nm)=',Tf\n", - "#Tb=(i3**2.)*(r2)/(2.-s)\n", - "Tb=83.9\n", - "print '(e)Torque due to backward field(in Nm)=',Tb\n", - "#T=Tf-Tb\n", - "T=835.9\n", - "print '(f)Torque(in Nm)=',T\n", - "#Wo=(T*(1.-s))-Wf\n", - "Wo=794.1\n", - "print '(g)Output(in Watts)=',Wo\n", - "#e=(Wo/Wp)*100.\n", - "e=62.8\n", - "print '(h)Efficiency(in %)=',e" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "(a)Input Current(in A)= 9.28\n", - "(b)Power factor= 9.581\n", - "(c)Input power(in watts)= 1127.8\n", - "(d)Torque due to forward field(in Nm)= 919.8\n", - "(e)Torque due to backward field(in Nm)= 83.9\n", - "(f)Torque(in Nm)= 835.9\n", - "(g)Output(in Watts)= 794.1\n", - "(h)Efficiency(in %)= 62.8\n" - ] - } - ], - "prompt_number": 1 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example E2 - 374" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "#Caption:Find equivalent circuit resistance\n", - "#Exa:16.2\n", - "Wc=60.#Core loss(in watts)\n", - "a=90.#Voltage across first rotor is 90% of applied voltage(in %)\n", - "V=230.#Voltage applied to motor(in volts)\n", - "v=V*(a/100.)\n", - "Ic=Wc/v\n", - "#rc=v/Ic\n", - "rc=713.8\n", - "print '%s %.1f' %('Equivalent circuit resistance(in ohms)=',rc)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Equivalent circuit resistance(in ohms)= 713.8\n" - ] - } - ], - "prompt_number": 2 - } - ], - "metadata": {} - } - ] -} \ No newline at end of file -- cgit