Author(s)

C. P. Boopathy¹, M. Kaliamoorthy²

¹Department of Electrical and Electronics Engineering, SVS College of Engineering, Coimbatore, India.
²Department of Electrical and Electronics Engineering, Karpagam College of Engineering, Coimbatore, India.

This paper introduces a novel single-phase asymmetrical multilevel inverter suitable for hybrid renewable energy sources. The proposed inverter consists of two isolated DC sources and six power semiconductor controlled switches. The suggested inverter is capable of generating seven-level output when the input DC voltage is taken in the ratio of 1:2. The higher magnitude DC source is fed from Photo Voltaic (PV) panels, whereas the lower magnitude DC source is fed from Wind Turbine (WT) driven Permanent Magnet DC (PMDC) generator. Both the renewable energy sources are connected to the inverter via two DC-DC boost converters connected in cascade (i.e. one for maximum power point tracking and another for DC-link voltage control). The proposed hybrid renewable energy source inverter is connected to single-phase grid via proper control systems. The complete system is simulated using MATLAB/SIMULINK and the results are presented in detail.

Asymmetrical Multilevel Inverter, DC-DC Boost Converter, Photo-Voltaic, Wind Turbine, Permanent Magnet DC Generator, Maximum Power Point Tracking

Boopathy, C. and Kaliamoorthy, M. (2016) A Novel Asymmetrical Single-Phase Multilevel Inverter Suitable for Hybrid Renewable Energy Sources. Circuits and Systems, 7, 932-945. doi: 10.4236/cs.2016.76079.