Work

Impedance Modeling and Analysis of PV Inverters Considering Fractional‐Order Characteristics of Elements

Year: 2025

Type: article

Abstract: ABSTRACT Concerning the fact that the inductors and capacitors are of fractional order, this paper establishes the impedance model for fractional‐order LCL‐type photovoltaic inverter based on the harmonic linearization method and verifies the correctness of the fractional‐order impedance model through simulation. The impedance characteristics of the inverter‐side inductor, grid‐side inductor, and filtering capacitor under different orders are also analyzed. The impedance criterion studies the system's stability of the fractional‐order element at different orders, and the suitable fractional‐order element is selected for hardware‐in‐the‐loop experiments based on the analysis results. The findings of the experiment demonstrate that the stability of the inverter is influenced by the order of its fractional‐order elements and that the stability of the system made up of the chosen fractional‐order elements is superior to that of the integer‐order system.

Source: International Journal of Circuit Theory and Applications

DOI: 10.1002/cta.70016

Authors: Guanlei Li, Yahui Shen, Lei Ji, Peng Chen, Shuohe Wang

Institutions: Shijiazhuang Tiedao University, State Grid Corporation of China (China)

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $2,780