Synthesis of Single Phase DC/AC Inverters

Abstract

This paper presents the basic derivation procedure and topological possibilities of creating single phase DC/AC inverters using simple DC/DC converters. It is shown that two separately controlled basic DC/DC converters are sufficient to produce sinusoidal output voltage. The connection of two converters can be generalised into two categories: parallel-power inverter (PPI) and series-power inverter (SPI). New PPI topologies combining different DC/DC converters to form an inverter is introduced and discussed. Owing to redundant power process in SPI, a new family of improved SPI is proposed. Simulation results of the selected converter topology are given to confirm the proposed approach.

Key Words:

• Current-source inverter
• DC/AC inverter
• DC/DC converter
• single phase
• voltage-source
• inverter

Additional information

Notes on contributors

D.D.C. Lu

Dylan Dah-Chuan Lu received his BEng (Hons) and PhD degrees in Electronic and Information Engineering from The Hong Kong Polytechnic University, Hong Kong, in 1999 and 2004, respectively. In 2003, he joined PowereLab Limited, a spin-off company at The University of Hong Kong, as a Senior Engineer. His major responsibilities include project development and management, circuit design, and contribution of research in the area of power electronics. From 2006, he became a Lecturer in the School of Electrical and Information Engineering, The University of Sydney. He has published over 30 conference and journal papers on the analysis and design of power electronics circuits. He holds one US patent. His research interests include modeling, synthesis and computer-aided design of power converters, DC-DC converters for VRM applications, electronic ballast, controls, power-factor-correction circuits, soft-switching techniques, and renewable electrical energy systems. He is a member of IEEE and IEAust.