Author, as appears in the article.: El Aroudi, Abdelali; Al-Numay, Mohamed; Haroun, Reham; Huang, Meng;

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: El Aroudi Chaoui, Abdelali / Haroun Mohamed Abdelkarim, Reham

Keywords: Subharmonic oscillation Stability analysis Slope compensation Sliding-mode control Pwm inverter Power Nonlinear behavior Fast-scale instabilities Differential boost inverter Design Current mode control Converter Bifurcation

Abstract: This paper focuses on the steady-behavior of a differential boost inverter used for generating a sinewave AC voltage in rural areas. The analysis of its dynamics will be performed using an accurate approach based on discrete time models and Floquet theory and adopting a quasi-static approximation. In particular, the undesired subharmonic oscillation exhibited by the inverter will be analyzed and its boundary in the parameter space will be predicted and delimited. Combining analytical expressions and computational procedures to determine the quasi-static duty cycle, subharmonic oscillation is accurately predicted. It is found that subharmonic oscillation takes place at critical values of the sinewave voltage reference cycle, which can cause distortion to the input current and degrade the harmonic content of the output voltage. The results provide useful information for the design of the boost inverter to avoid distortion caused by subharmonic oscillation. Namely, the minimum value of the compensation slope and the maximum proportional gain of the AC output voltage controller guaranteeing a pure sinewave voltage and clean inductor current during the entire AC cycle will be determined. Numerical simulations performed on the switched model implemented using PSIM (c) software confirm the theoretical predictions.

Thematic Areas: Química Process chemistry and technology Physics, applied Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Instrumentation General materials science General engineering Fluid flow and transfer processes Engineering, multidisciplinary Engineering (miscellaneous) Engineering (all) Engenharias ii Engenharias i Computer science applications Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Chemistry, multidisciplinary Biodiversidade Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 20763417

Author's mail: abdelali.elaroudi@urv.cat reham.haroun@urv.cat

Author identifier: 0000-0001-9103-7762 0000-0002-8099-4281

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2076-3417/10/16/5626

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Applied Sciences-Basel. 10 (16):

APA: El Aroudi, Abdelali; Al-Numay, Mohamed; Haroun, Reham; Huang, Meng; (2020). Analysis of Subharmonic Oscillation and Slope Compensation for a Differential Boost Inverter. Applied Sciences-Basel, 10(16), -. DOI: 10.3390/app10165626

Article's DOI: 10.3390/app10165626

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

Publication Type: Journal Publications