Hello My Dear Friends!
Hope this post finds you well.
I am trying to develop a AC to DC rectifier 110V/50 A range.
Feeling that I am doing wrong on making the full bridge or half bridge portion.
The IGBT module I am using is FF75R12RT4,
https://www.infineon.com/dgdl/Infineon-FF75R12RT4-DS-v02_01-EN.pdf?fileId=db3a304327b89750012805fd8fd76151
One module contains 2 IGBT that makes me confusing!
I need to understand my switching topologies first
Take a look my diagram, how the current flows back from primary winding of TR for a full cycle?
1. When point A is positive then Q2 conducts, Q1 is OFF?
2. When point A is negative then Q1 conducts Q2 is OFF?
3. When point B is positive then Q4 conducts, Q3 is OFF?
4. When point B is negative then Q3 conducts Q4 is OFF?
Freewheeling built on doides are available, whats 2uF high voltage is doing here?