1. ECE 3301 General Electrical Engineering
Presentation 11
Delta – Wye Conversion

2. Delta-to-Wye Conversion
Some arrangements of resistances are neither in parallel nor in series.

3. Delta-to-Wye Conversion
Two such arrangements are the delta and wye connection.

4. Delta-to-Wye Conversion
A transformation from the delta connection to the wye connection may be derived by considering the resistance from point A to point B in the wye connection.

5. Delta-to-Wye Conversion

6. Delta-to-Wye Conversion

7. Delta-to-Wye Conversion

8. Delta-to-Wye Conversion

9. Delta-to-Wye Conversion

10. Delta-to-Wye Conversion

11. Delta-to-Wye Conversion
These equations may be combined by forming the sum.

12. Delta-to-Wye Conversion

13. Wye-to-Delta Conversion

14. Wye-to-Delta Conversion

15. Wye-to-Delta Conversion

16. Example

17. Example

18. Example

19. Example

20. Example