Abstract :
A novel transformer for 28-pulse AC-DC converter configuration is designed, modelled and simulated to feed isolated DC varying loads. The proposed transformer is suitable for large current rating rectifiers such as electric-aircraft power supply, electro-winning, electro-chemical processes, induction heating, plasma torches and so on, where isolation is required mainly for stepping down the supply voltage. It consists of two paralleled 14-pulse AC-DC converters involving seven-phase shifted AC fed diode bridges. It improves power quality at AC mains and it meets power quality IEEE-519 standards requirements at varying loads.
Keywords :
AC-DC power convertors; bridge circuits; harmonics suppression; power conversion harmonics; power supply quality; power transformers; pulse circuits; rectifying circuits; 14-pulse AC-DC converter; 28-pulse AC-DC converter; AC fed diode bridges; IEEE-519 standards; isolated DC varying load; large current rating rectifier; line current harmonic reduction; power quality; transformer;
