blob: 42b7ec603644117201654831e32fc0914cfe29b2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
//Example No. 4.13
clc;
clear;
close;
format('v',7);
//Given Data :
P=6;//poles
f=50;//Hz
MoI=9.5;//Kg-m^2
Tr=550;//N-m
S=5/100;//Slip
Tmax=720;//N-m
T_LH=1020;//N-m
th=12;//sec
Tmin=220;//N-m
Snl=3/100;//No load slip
Ns=120*f/P;//rpm
Nnl=Ns-Ns*Snl;//rpm
Nrated=Ns-Ns*S;//rpm
omega_mo=Nnl*2*%pi/60;//rad/s
omega_mr=Nrated*2*%pi/60;//rad/s
J=[Tr/(omega_mo-omega_mr)]*[th/log((T_LH-Tmin)/(T_LH-Tmax))];//Kg-m^2
MoI_flywheel=J-MoI;//Kg-m^2
disp(MoI_flywheel,"Moment of inertia of flywheel in Kg-m^2 : ");
//Answer in the book is wrong.
|
