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

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SUMMARY

The discussion centers on solving a three-phase electrical problem involving a balanced star source with an RMS phase voltage magnitude of 230V and an impedance of Zg=5+j5. The per-phase impedance for both star and delta connected loads is given as 30+j30. Participants emphasize the importance of converting the delta load to a Y load for effective per-phase analysis to determine line and phase voltages and currents.

PREREQUISITES
  • Understanding of three-phase power systems
  • Knowledge of complex impedance (Zg=5+j5 and 30+j30)
  • Familiarity with star (Y) and delta (Δ) load configurations
  • Ability to perform per-phase analysis in electrical circuits
NEXT STEPS
  • Study the conversion methods between delta and star load configurations
  • Learn how to calculate line and phase voltages in three-phase systems
  • Explore per-phase analysis techniques in balanced three-phase circuits
  • Review complex impedance calculations and their applications in circuit analysis
USEFUL FOR

Electrical engineering students, professionals working with three-phase power systems, and anyone involved in circuit analysis and load calculations will benefit from this discussion.

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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