Grid-tied Multilevel Inverter with Phase-locked Loop Algorithm

Inversor multinivel enlazado a la red eléctrica mediante un algoritmo de fijación de fase

Main Article Content

Roberto Martinez-Montejano
Osbaldo-Ulisses Álvarez-Maldonado
José-Jimmy Jaime-Rodríguez
Germánico González-Badillo
Isaac Campos-Cantón
Misael-Francisco Martínez-Montejano

Abstract

A multilevel inverter is an electronic device capable of changing direct current energy to alternant current energy with a voltage and frequency established by the user. They are ideal for connecting renewable energy sources to the AC grid, energy plants, and smart grids. The voltage must be balanced and synchronized with the electrical network for adequate performance. This paper shows the voltage synchronization between an inverter output voltage and the AC grid using a phase-locked loop based on an adaptive observer. The proposed algorithm can perform under grid uncertainties such as noise and generates a reference signal for the modulation used in the inverter. The algorithm is robust and computationally efficient and can be implemented through basic elements such as operational amplifiers, resistors, and capacitors, reducing its difficulty in executing it in a system.

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Author Biographies (SEE)

Roberto Martinez-Montejano, Universidad Autónoma de San Luis Potosí

Roles: Investigation, Methodology, Witing-review & editing, Funding acquisition.

Osbaldo-Ulisses Álvarez-Maldonado, Universidad Autónoma de San Luis Potosí

Roles: Investigation, Writing-original draft.

José-Jimmy Jaime-Rodríguez, Universidad Autónoma de San Luis Potosí

Roles: Visualization.

Germánico González-Badillo, Universidad Autónoma de San Luis Potosí

Roles: Formal analysis.

Isaac Campos-Cantón, Universidad Autónoma de San Luis Potosí

Roles: Validation.

Misael-Francisco Martínez-Montejano, Oak Ridge National Laboratory

Roles: Conceptualization, Supervision.

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