Three-Phase System: RMS Phase Voltage Magnitude 230V, Zg=5+j5, 30+j30 Loads

AI Thread Summary
The discussion focuses on a balanced three-phase star source with a given RMS phase voltage of 230V and an impedance of Zg=5+j5. Participants are tasked with determining the line and phase voltages and currents for both star and delta connected loads, which have a per-phase impedance of 30+j30. One user expresses confusion and requests guidance on how to approach the problem. Another contributor suggests converting the delta load to a Y load and utilizing per-phase analysis for a clearer solution. The conversation emphasizes the need for a foundational understanding of three-phase power systems to tackle the problem effectively.
noobie!
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Homework Statement


consider the balanced three phase star source with RMS phase voltage magnitude of 230V shown in fig5 with an impedance of Zg=5+j5.The per-phase impedance value of a three phase balanced star and delta connected loads are 30+j30.
a)Determine the line and phase voltages and currents at the star and delta connected loads


Homework Equations



don't have any,sorry~

The Attempt at a Solution


i totally got no idea where to begin with,can someone please guide me??thanks~
 
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noobie! said:

Homework Statement


consider the balanced three phase star source with RMS phase voltage magnitude of 230V shown in fig5 with an impedance of Zg=5+j5.The per-phase impedance value of a three phase balanced star and delta connected loads are 30+j30.
a)Determine the line and phase voltages and currents at the star and delta connected loads


Homework Equations



don't have any,sorry~

The Attempt at a Solution


i totally got no idea where to begin with,can someone please guide me??thanks~

From my standpoint, it looks like you know nothing about three phase power since you've shown no work. It's a little hard to write out a whole chapters worth of theory on three phase power to prepare you for this problem.

To do this problem, I would convert the delta load to a Y load, and use a per phase analysis.
http://img697.imageshack.us/img697/4961/42710974.jpg
 
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