Author, as appears in the article.: Rodriguez E., Alarcón E., Iu H., El Aroudi A.

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: El Aroudi Chaoui, Abdelali

Keywords: Tdfc Switching power converter Subharmonic oscillations Stability analysis Chaos controllers Chaos Bifurcation

Abstract: This paper deals with controllers of fast-scale instabilities in DC-DC switching power converters from a frequency domain standpoint with the aim of understanding their working principle and hence simplifying their design. Some approaches for controlling fast-scale instabilities and their limitations are revisited. Considering the frequency domain transfer function of already existing controllers, a simple and extended notch filter centered at half of the switching frequency is proposed to avoid these instabilities. However, a switching converter under this controller may still exhibit the undesired slow-scale instability. Accordingly, the paper explores an alternative approach based on amplifying the harmonic at the switching frequency. Numerical simulations show that the new proposed controller can concurrently improve both fast-scale and slow-scale stability margins. The results from the different controllers are contrasted in terms of stability boundaries, indicating that the last one presents a wider stability range.

Thematic Areas: Multidisciplinary sciences Multidisciplinary Modeling and simulation Mathematics, interdisciplinary applications Mathematics, applied Matemática / probabilidade e estatística Interdisciplinar Geociências General engineering Ensino Engineering (miscellaneous) Engenharias iv Engenharias iii Engenharias i Economia Ciências biológicas i Ciências agrárias i Ciência da computação Biodiversidade Astronomia / física Applied mathematics

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

ISSN: 02181274

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

Author identifier: 0000-0001-9103-7762

Record's date: 2023-02-18

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

Link to the original source: https://www.worldscientific.com/doi/abs/10.1142/S0218127415501412

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

Papper original source: International Journal Of Bifurcation And Chaos. 25 (11): 1550141-

APA: Rodriguez E., Alarcón E., Iu H., El Aroudi A. (2015). A Frequency Domain Approach for Controlling Fast-Scale Instabilities in Switching Power Converters. International Journal Of Bifurcation And Chaos, 25(11), 1550141-. DOI: 10.1142/S0218127415501412

Article's DOI: 10.1142/S0218127415501412

Entity: Universitat Rovira i Virgili

Journal publication year: 2015

Publication Type: Journal Publications