Need help in Commutation

[zedora786]

i have to make a presentation on the following topics. kindly help me as i know nothing about the topics. any notes, books, lectures, related sites or material will be highly appreciated.

1. Differences between Natural and Forced Commutation
2. Class A commutation: Load Commutation
3. Class B commutation: Resonant-pulse commutation
4. Class C commutation: Complementary commutation
5. Class D commutation: Impulse commutation
6. Class E commutation: External Pulse commutation
7. Class F commutation: Line commutation
8. Capacitor Commutation
9. Need of commutation of SCR.

 

[WimRFP]

Did you use a search engine to find relevant info? I think not as: class a b commutation resonant in Google gives useful info. If after your study still things are unclear, you can post these things here to get useful feedback.