An Innovative Structure of Single Phase Multi-Step DC-AC Converter with Addition-Subtraction in DC Voltage Sources Yousuf S Mohamed*, Latha S**, Sathik M Jagabar***, Mani S Veeravel**** *Assistant Professor, Department of EEE, Sri Subramanya College of Engineering and Technology, Palani, Tamil Nadu, India. mohamedyousuf_palani@yahoo.co.in **Associate Professor, Department of EEE, Thiagarajar College of Engineering, Madurai, Tamil Nadu, India ***Assistant Professor, Department of EEE, SRM University, Kattankullathur, Tamil Nadu, India ****Lecturer, Department of EEE, Sri Balamurugan Polytechnique College, Palani, Tamil Nadu, India Online published on 23 March, 2017. Abstract The multi-step converters takes plays essential role in the research area of solar energy system based grid, FACTS devices (especially DVR and STATCOM) and various industrial drive applications etc,. The major constraints of these converters requires several DC voltage sources, ON/OFF switches, driver circuits, diodes, capacitors etc,. This makes complexity of circuit and huge investment. In order to solve this problem, this paper introduces an innovative ASMC (Addition-Subtraction Multi-step Converter) topology which is capable of delivering 3n level step output voltage (n represents the counting of DC sources) with very few counting of components. This leads to reduce the size and cost of the converter drastically. The proposed ASMC topology may lengthen to any number of levels with lesser components count which results in lower harmonics spectrum and better output step waveform quality. This paper presents the C-level asymmetric ASMC topology using only few DC voltage source. The H-bridge is combined with this topology to generate alternate positive and negative waveforms as well. The operational features of the proposed ASMC topology has been simulated by simulation software MATLAB/SIMULINK and reconfirmed by hardware prototype model. Top Keywords Addition-Subtraction Multi-step Converter (ASMC), Asymmetric Converter, cascaded H-bridge, Multi-step converter, Multi-level inverter. Top |