# adding to find neutral current

Discussion in 'Homework Help' started by Kayne, Aug 18, 2010.

1. ### Kayne Thread Starter Active Member

Mar 19, 2009
105
0
If I am trying to fins the neutral current and am given the following information that the system is balanced with current in a phase

$ia = 30 sin(wt-15)+5 sin3(wt-15)+3sin5(wt-15)+sin7(wt-15)+0.5sin9(wt-30)$ where w=100∏rad/s

I know that ib (lag 120) and ic (lead 120) are the same as ia as the load is balance. so
$ib = 30 sin(wt-135)+5 sin3(wt-135)+3sin5(wt-135)+sin7(wt-135)+0.5sin9(wt-150)$
$ic = 30 sin(wt-105)+5 sin3(wt-105)+3sin5(wt-105)+sin7(wt-105)+0.5sin9(wt-90)$

Using the fundamental component $30sin(wt-15)$ do i just times these together?

Thanks

Last edited: Aug 18, 2010