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Vector Addition
Sum of vector current is zero (0) in a balanced symmetrical three phase grounded electric system. So any non-zero summation of vector current would be an indicator that some inbalance current is flowing through the grounded neutral circuit. But in real electric three phase network there is always unbalance loading, so applying sum of vector current principle needs algorithm to compensate for unbalance loading.
To see the graph better, drag it to your left.
Shown below are the two methods of doing vector addition. The first method is by using the graphical solution. Using vector equation c= a + u + v = 0. And the second method using phasor. Using vector equation d = u + w + b = 0.
By Apolinario "Sam" Ortega, 22 August 2016, Created with GeoGebra
Given a point E with a polar coordinate of
∠ ° , meaning the radius is 4 and the angle is 120 degree. Assumed counter clockwise rotation of the angle (CCW rotation)
DEFAULT ROTATION IS COUNTER CLOCKWISE FROM POSITIVE X-AXIS BECAUSE IT CORRESPONDS TO CARTESIAN COORDINATE
Compute its equivalent rectangular coordinate or cartesian coordinate:
ANSWER ( , )
Given the rectangular coordinate of a point E .
( , )
Solve for its equivalent polar coordinate.
DEFAULT ROTATION IS COUNTER CLOCKWISE FROM POSITIVE X-AXIS BECAUSE IT CORRESPONDS TO CARTESIAN COORDINATE
ANSWER: ∠ °
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