initial commit / add all books

1 files changed, 27 insertions, 0 deletions

diff --git a/3760/CH4/EX4.35/Ex4_35.sce b/3760/CH4/EX4.35/Ex4_35.sce
new file mode 100644
index 000000000..d3e359167
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+++ b/3760/CH4/EX4.35/Ex4_35.sce
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+clc;

+V=230;//supply current

+Pout=15000;//output voltage

+Ra=0.2;//armature circuit resistance

+Rse=0.1;//resistance of series field winding

+Nf=1000;//shunt field turns per pole

+//Data for magnetization curve at 1500 rpm

+If_=[0 0.2 0.4 0.6 0.8 1.02 1.15 1.32 1.56 1.92 2.4];//field current at 1500 rpm

+Ea=[6 40 80 120 160 200 220 240 260 280 300];//counter emf at 1500 rpm and respective field current

+plot(If_,Ea);//Magnetization curve at 1500 rpm

+Ia_1=4;//armature current at rated voltage and rated load

+Ia_2=70;//armature current at 1200rpm

+

+//At no load

+Ea_=V-Ia_1*Ra;//counter emf

+//field current required for Ea_(ie.229.2 V),from O.C.C. is 1.23 A.

+

+//At load

+Ea__=V-Ia_2*(Ra+Rse);//counter emf at 1200 rpm

+Ea___=209*(1500/1200);//Ea at speed of 1500 rpm

+//Field current corresponding to Ea___(ie.261.25 V),from O.C.C. is 1.575 A.

+//Total D-axis mmf per pole=Nf*If+Ns*Is

+If=1.23;//field current at 229.2 V is 1.23 A

+If1=1.23;//field current at 261.25 V is 1.575 A

+//1.575*1000=1.23*1000+Ns*(70)

+Ns=(0.345*1000)/70;//series field turns

+printf('For long-shunt connection, series field turns is equal to %f.',round(Ns));