Degree of compounding

The topics about degree of compounding of a compound generator and discuss about various types of compounding

1. Degree of Compounding Submitted by: Md. Ziaul Haque ID : 555181028 Submitted to: Najmin Ara Sultana Lecturer, Department of EEE Hamdard University Bangladesh 1

2. Index Compound generator Types of compound generator What is diverter ? Comparison of generator terminal voltage A. Cumulative Compound Generator 1. Over compound 2. Flat compound 3. Under compound B. Differential Compound Generator 2

3. Compound generator A compound wound generators is a combination of a series field winding and the shunt field winding . 3

4. Types of compound generator There are two types of compound generator- Cumulative Compound Generator : When the series field assists the shunt field, generator is said to be Cumulative Compound Generator. Differential Compound Generator: When the series field opposes the shunt field, generator is said to be Differential Compound Wound Generator. 4

5. What is diverter ? Diverter: A diverter is a variable resistance shunting the series field of compound generator to adjust the degree of compounding to produce a desired voltage regulation . 5

6. Figure… In this figure- V =   6

7. Using diverter……… By using diverter we can change the terminal voltage convert a compound generator into over, flat, under compound. 7

8. Comparison of generator terminal voltage Cumulative Compound Generator 8

9. Continue……. Over compound : An over-compound generator is one whose terminal voltage rises with the application of load so that its full-load voltage exceeds its no-load voltage. Flat-compound : A flat compound generator has a load-voltage characteristic in which the no-load and full-load voltages are equal. 9

10. Continue……… Under compound : In Under compound generator the terminal voltage is higher than shunt generator but lower than flat compound generator. 10

11. Continue……. Differential Compound Generator : When the series field winding creating magnetic flux that opposes the flux created by shunt field. The net flux cut by the armature conductors is less than the flux at no load resulting in a lower induced voltage . 11

12. Thank you 12