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_4.ipynb | 149 --------------------- 1 file changed, 149 deletions(-) delete mode 100755 Electrical_Machines_by_M._V._Despande/Chapter_4.ipynb (limited to 'Electrical_Machines_by_M._V._Despande/Chapter_4.ipynb') diff --git a/Electrical_Machines_by_M._V._Despande/Chapter_4.ipynb b/Electrical_Machines_by_M._V._Despande/Chapter_4.ipynb deleted file mode 100755 index 10135a02..00000000 --- a/Electrical_Machines_by_M._V._Despande/Chapter_4.ipynb +++ /dev/null @@ -1,149 +0,0 @@ -{ - "metadata": { - "name": "", - "signature": "sha256:7fa09fcf254856ffb631597f2e9eabf0acc558dd03bcd214154047f1abcb4634" - }, - "nbformat": 3, - "nbformat_minor": 0, - "worksheets": [ - { - "cells": [ - { - "cell_type": "heading", - "level": 1, - "metadata": {}, - "source": [ - "CHAPTER 4 - ELEMENTS OF TRANSFORMER DESIGN" - ] - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example E1 - Pg 72" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "#Caption: Find (a)Voltage per turn (b)Cross sectional area of core (c)Cross sectional area of conductor for l.v (d)Cross sectional area of conductor for h.v (e)Number of turns in l.v (f)Number of turns in h.v (g)Window area (h)Yoke and approx. frame size (i)Copper used in windings\n", - "#Exa:4.1\n", - "import math\n", - "P=5000.#Power supplied to transformer(in VA)\n", - "f=50.#frequency(in Hertz)\n", - "V_1=415.#Primary side voltage(in volts)\n", - "V_2=240.#Secondary side voltage(in volts)\n", - "k=0.75\n", - "B=1.6#Maximum flux density(in weber/m**2)\n", - "i_d=2.#Current density(in A/mm**2)\n", - "k_w=0.3\n", - "E=k*math.sqrt(P/1000.)\n", - "print '%s %.2f' %('(a)Voltage per turn(in volts)=',E)\n", - "A_1=(E*(10.**6.))/(4.44*B*f)\n", - "print '%s %.f' %('(b)Cross sectional area of core(in mm**2)=',A_1)\n", - "i_2=P/V_2\n", - "A_2=i_2/i_d\n", - "print '%s %.1f' %('(c)Cross sectional area of conductor for low voltage side(in mm**2)=',A_2)\n", - "i_1=P/V_1\n", - "A_1=i_1/i_d\n", - "print '%s %.f' %('(d)Cross sectional area of conductor for high voltage side(in mm**2)=',A_1)\n", - "n_2=V_2/E\n", - "print '%s %.f' %('(e)Number of turns in low voltage winding=',n_2)\n", - "n_1=V_1/E\n", - "print '%s %.1f' %('(f)Number of turns in high voltage winding=',n_1)\n", - "#A_w=(P*(10.**(9.))/1000.)/(2.22*A_1*k_w*i_d*B)\n", - "A_w=9933.\n", - "print '%s %.f' %('(g)Window area(in mm**2)=',A_w)\n", - "cu=(A_1*n_1)+(A_2*n_2)\n", - "print '%s %.f' %('(i)Copper used in windings(in mm**2)=',cu)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "(a)Voltage per turn(in volts)= 1.68\n", - "(b)Cross sectional area of core(in mm**2)= 4721\n", - "(c)Cross sectional area of conductor for low voltage side(in mm**2)= 10.4\n", - "(d)Cross sectional area of conductor for high voltage side(in mm**2)= 6\n", - "(e)Number of turns in low voltage winding= 143\n", - "(f)Number of turns in high voltage winding= 247.5\n", - "(g)Window area(in mm**2)= 9933\n", - "(i)Copper used in windings(in mm**2)= 2981\n" - ] - } - ], - "prompt_number": 1 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example E2 - Pg 74" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "#Caption:Find (a)Voltage per turn (b)Cross sectional area of core (c)Cross sectional area of conductor for h.v (d)Number of turns per phase in h.v winding (e)Cross sectional area of conductor in l.v winding (f)Number of turns in l.v winding (g)Window area (h)Yoke and approx frame size,and (i)Copper used in window area\n", - "#Exa:4.2\n", - "import math\n", - "P=100000.#Power supplied to transformer(in VA)\n", - "f=50.#Frequency(in hertz)\n", - "V_1=11000.#Primary side voltage(in volts)\n", - "V_2=433.#Secondary side voltage(in volts)\n", - "k=0.45\n", - "B=1.65#Maximum flux density(in tesla)\n", - "k_w=0.28\n", - "i_d=2.5#Current density(in A/mm**2)\n", - "E=k*math.sqrt(P/1000.)\n", - "print '%s %.1f' %('(a)Voltage per turn(in volts)=',E)\n", - "A_1=E*(10.**6.)/(4.44*f*B)\n", - "print '%s %.f' %('(b)Cross sectional area of core(in mm**2)=',A_1)\n", - "I_1=P/(3*V_1)\n", - "a_1=I_1/i_d\n", - "print '%s %.2f' %('(c)Cross sectional area of conductor in h.v winding(in mm**2)=',a_1)\n", - "n_1=V_1/E\n", - "print '%s %.f' %('(d)Number of turns per phase in h.v winding(in mm**2)=',n_1)\n", - "I_2=P/((3**0.5)*V_2)\n", - "a_2=I_2/i_d\n", - "print '%s %.1f' %('(e)Cross sectional area of conductor in l.v winding(in mm**2)=',a_2)\n", - "v=V_2/(3.**0.5)\n", - "n_2=v/E\n", - "print '%s %.f' %('(f)Number of turns in l.v winding=',n_2)\n", - "A_w=(P*(10.**6.))/(3.33*f*A_1*k_w*i_d*B)\n", - "print '%s %.f' %('(g)Window Area(in mm**2)=',A_w)\n", - "Cu=2*((a_1*n_1)+(a_2*n_2))\n", - "print '%s %.f' %('Copper used in window area(in mm**2)=',Cu)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "(a)Voltage per turn(in volts)= 4.5\n", - "(b)Cross sectional area of core(in mm**2)= 12285\n", - "(c)Cross sectional area of conductor in h.v winding(in mm**2)= 1.21\n", - "(d)Number of turns per phase in h.v winding(in mm**2)= 2444\n", - "(e)Cross sectional area of conductor in l.v winding(in mm**2)= 53.3\n", - "(f)Number of turns in l.v winding= 56\n", - "(g)Window Area(in mm**2)= 42328\n", - "Copper used in window area(in mm**2)= 11852\n" - ] - } - ], - "prompt_number": 2 - } - ], - "metadata": {} - } - ] -} \ No newline at end of file -- cgit