abstract

• This paper presents a single-phase multilevel inverter based on the cascade connection of a T-Type converter and a H-bridge converter. Each converter generates a three-level output voltage. The proposed cascade multilevel inverter produces a 7-level output voltage which reduces the harmonic content, decreases the size of the grid-side filter and increases the efficiency. The proposed inverter can be applied to active power injection for renewable energy sources systems. A modulation based on the level-shifted sinusoidal pulse width modulation technique is also proposed. An efficiency analysis and total harmonic distortion values are shown in order to validate both the proposed converter and modulation strategy. A comparative analysis between the 3-level T-Type inverter and the proposed converter is performed to highlight the advantages of the proposed converter. Finally, numerical results are presented in order to validate the performance of the proposed multilevel converter. © 2018 IEEE.

authors

• Izaguirre-Vera A.
• Limones-Pozos C.A.
• Martínez Rodríguez Pánfilo Raymundo
• Sosa J.M.
• Vazquez G.

publication date

• 2019-01-01

published in

• 2018 IEEE International Autumn Meeting on Power, Electronics and Computing, ROPEC 2018  Proceedings

keywords

• Bridge circuits; Modulation; Renewable energy resources; Voltage control; Cascade multilevel inverter; Comparative analysis; Modulation strategy; Multilevel converter; Renewable energy applications; Renewable energy source; Sinusoidal pulse width modulation techniques; Total harmonic distortion (THD); Electric inverters

Digital Object Identifier (DOI)

• 10.1109/ROPEC.2018.8661437

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