blob: e301f5ec9bd1c65e068935a875ec9dcae3cac4c0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
//Calculate starting line current and starting torque
//Chapter 4
//Example 4.26
//page 330
clear;
clc;
disp("Example 4.26")
V=400; //supply voltage in volts
f=50; //frequency in hertz
Id=75; //current taken when delta-connected in amperes
printf("current taken when delta-connected=%dA",Id);
Is=Id/3; //current taken when star-connected in amperes
printf("\ncurrent taken when star-connected=%dA",Is);
//Tfl be the full load torque
//r=Ts/Tfl
r=1.5;
//since voltage becomes (1/sqrt(3)) when star connected
//torque is directly proportional to square of voltage
printf("\nStarting torque with winding star connected=%f times of Tfl",(r/3));
|