3-phase delta supply to a 3-phase synchronous motor?

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SUMMARY

A 3-phase delta supply cannot be used effectively with a 3-phase synchronous motor whose stator windings are connected in star (wye). The rotor of a synchronous motor requires a continuous current, which is not provided by a delta connection when the stator is configured in star. Additionally, the voltage levels differ between the two configurations, as the delta voltage is lower than that of the star connection. Understanding the phasor diagrams for both configurations is crucial for justifying this conclusion.

PREREQUISITES
  • Understanding of 3-phase electrical systems
  • Knowledge of synchronous motor operation
  • Familiarity with star (wye) and delta connections
  • Ability to interpret phasor diagrams
NEXT STEPS
  • Study the operational principles of synchronous motors
  • Learn about the implications of star vs. delta connections in motor applications
  • Research continuous current requirements for synchronous motors
  • Examine phasor diagram analysis for different motor configurations
USEFUL FOR

Electrical engineers, motor control specialists, and students studying electrical machines will benefit from this discussion, particularly those focusing on motor configurations and their operational characteristics.

Cocoleia
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Homework Statement


Can we use a 3 phase delta supply to a 3 phase synchronous motor who's stator windings are connected in star (wye)?

The Attempt at a Solution


I was thinking no, since I read in my notes that the rotor has to be supplied with a "continuous current"

But I'm not sure. I have to justify my answer. I am also thinking maybe the phase differences won't match up and it won't work? I don't know. Can someone help clarify?
 
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Star and delta are the two ways to connect three windings. The star may also have a neutral connection.
If you draw the phasor diagram for both configurations you will see that the voltage of the delta is less than the star.

Both configurations have three phases with 120° phase separation.
How could an intelligent synchronous motor tell the difference?
 
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