Original scientific paper

https://doi.org/10.1080/00051144.2019.1680010

Integrated fuzzy and phase shift controller for output step voltage control in multilevel inverter with reduced switch count

Jawahar Rahila ; Sethu Institute of Technology, Pulloor, India
M. Santhi ; Solamalai College of Engineering, Veerapanjan, India

Abstract

A modified multilevel inverter with a configurable level generation is proposed in this paper. The MLI is composed of a modified boost converter at the front end followed by a level generation circuit and a H-bridge configuration. The front-end converter is biased with a PV source with a Hybrid boost resonant converter. The switches are triggered out of phase through a MPP tracker which uses Fractional INC MPPT. The secondary side of the circuit is composed of a derived voltage doubler along with the voltage regulator. The output of the doubler is regulated through a level converter which integrates a fuzzy controller and a phase shift controller. The modified multilevel inverter uses a low-voltage PV source as input and generates a variable-step multilevel output voltage with lower harmonic distortion and it is suitable for low-power PV applications.

Keywords

Fuzzy logic; phase shift control; multilevel inverter; MPPT; n level

Hrčak ID:

239867

URI

https://hrcak.srce.hr/239867

Publication date:

16.3.2020.

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