1. Inverters - M.W.Nasim M.W.Naeem

2. Applications of Inverters  Variable speed a.c. motor drives.  Induction heating.  Aircraft power supplies.  Uninterruptible power supplies (UPS).  High voltage d.c. transmission lines.  Battery-vehicle drives.  Regulated voltage and frequency power supplies, etc. M.W.Naeem

3. Classification of Inverter  Based on the nature of Input  Voltage source inverters (VSI)  Current source inverters (CSI) M.W.Naeem

4. Classification of Inverters  Depending on the waveform of the output  Square-wave inverter  Quasi-square wave inverter  Pulse-width modulated (PWM) inverters M.W.Naeem

5. Classification According to the Method of Commutation  According to the method of commutation,  Line commutated inverters  Forced commutated inverters. M.W.Naeem

6. Classifications According to Connections  According to the connections of the thyristors and commutating components, the inverters can be classified mainly in three groups. These are:  Series inverters.  Parallel inverters.  Bridge inverters.: Bridge inverters are further classifed as: (i) Half-bridge and (ii) Full-Bridge. M.W.Naeem

7. Basic Series Inverter M.W.Naeem

10. Improved Series Inverter M.W.Naeem

12. Parallel Inverter M.W.Naeem

14. Single phase full bridge inverter M.W.Naeem

16. Single phase half bridge inverter M.W.Naeem

18. Single phase Full bridge inverter M.W.Naeem

20. Three Phase Inverter M.W.Naeem

21. Operation Table Sr.NoIntervalDevice Conducting Incoming Device Outgoing Device 1I5,6,114 2II6,1,225 3III1,2,336 4IV2,3,441 6V3,4,552 7VI4,5,663 M.W.Naeem

22. Devices Conducting : 5,6,1 M.W.Naeem

24. Devices Conducting : 6,1,2 M.W.Naeem

26. Devices Conducting : 1,2,3 M.W.Naeem

28. Operation Table Sr.N o Inte rval Device Condu cting Inco ming Devi ce Outg oing Devi ce EanEbnEcn 1I5,6,114 2Edc/ 3 2II6,1,225 3III1,2,336 4IV2,3,441 6V3,4,552 7VI4,5,663 M.W.Naeem

29. I G1 I G2 I G3 I G4 I G5 I G6 I II III IV V VI M.W.Naeem

30. E BN I II III IV V VI E AN E CN M.W.Naeem

31. E BC I II III IV V VI E AB E CA M.W.Naeem