Nonlinear controllability analysis of DC-DC converters using Lie Algebraic method

Bhattacharyya, Debanjana; Pati, K. C.

doi:10.1109/icatiece45860.2019.9063858

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…La condición para que un sistema no lineal posea observabilidad, es que la dimensión de la distribución de observabilidad sea igual a la dimensión del espacio de estado [11]. En [14] se muestra un análisis de la observabilidad de un convertidor boost ideal y uno no ideal usando el álgebra de Lie, pero sin considerar el ciclo de dureza 𝐷 en el análisis. En este trabajo se considerará la observabilidad no lineal teniendo en cuenta el ciclo de dureza 𝐷. Para ello se calcula el espacio de observación como:…”

Section: Observabilidad No Lineal Del Modelounclassified

Diseño y simulación de estimadores de estado lineales y no lineales en un modelo de convertidor de potencia DC/DC

et al. 2022

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La estimación de estado en convertidores electrónicos de potencia es una alternativa interesante para obtener de manera indirecta algunas variables que son difíciles de medir, debido a los costos de los sensores o a las limitaciones impuestas por los ruidos de medición. Por lo tanto, en este artículo se realiza el diseño de tres estimadores de estado lineales y tres no lineales para un modelo de convertidor boost DC/DC, con el fin de verificar la conveniencia de usar solo estimadores no lineales como solución al problema de estimación de la corriente del convertidor. Adicionalmente, se prueba mediante simulación el comportamiento de estos estimadores en el software Matlab. The state estimation in power electronic converters is an interesting alternative to obtain indirectly some variables that are difficult to measure, due to sensor costs or limitations imposed by measurement noise. Therefore, in this paper we design three linear and three nonlinear state estimators for a DC/DC boost converter model, in order to verify the convenience of using only nonlinear estimators as a solution to the converter current estimation problem. Additionally, the behavior of these estimators is tested by simulation in Matlab software.

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Section: Observabilidad No Lineal Del Modelounclassified

Diseño y simulación de estimadores de estado lineales y no lineales en un modelo de convertidor de potencia DC/DC

et al. 2022

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“…The Liealgebra technique could also be applied to investigate the controllability of a switched system, but the determination approach is difficult to apply directly. 9,10 Reachability, defined as the ability of the state variables to transition from a zero state to a nonzero state, is similar to controllability. The reachability of DC-DC converters had been investigated in Ramos-Paja et al, 11 and a slidingmode controller had also been proposed to assure their stability.…”

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confidence: 99%

Controllability, reachability, observability performance analysis of ultra‐high voltage converter cascaded systems based on switched linear system model

Yang,

Tao,

Ding

et al. 2023

Circuit Theory & Apps

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SummaryUltra‐high voltage converters are usually employed to transform low voltage to high voltage in microgrids to produce renewable energy. However, it is challenging to develop control techniques due to the complicated structure of ultra‐high voltage converters and the numerous power switches and circuit components, which leads to poor dynamic characteristics of the system and a marked increase in fault rates. In order to understand the control theoretical characteristics of the ultra‐high voltage converter and provide a theoretical basis for circuit parameter analysis and control strategy design, this paper takes the boost converter cascaded system as an example to establish an accurate switching linear system model, discusses the control theoretical characteristics of the ultra‐high voltage converter in detail, and uses the decision theorem to draw the conclusion that the system is structurally controllable, reachable, and observable, simplifying the difficulty of analysis. The simulation and experimental findings show that the conclusion was drawn correctly. The research findings will give the boost converter cascaded systems modulation approach and circuit parameter design a theoretical foundation.

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Nonlinear controllability analysis of DC-DC converters using Lie Algebraic method

Cited by 3 publications

References 23 publications

Diseño y simulación de estimadores de estado lineales y no lineales en un modelo de convertidor de potencia DC/DC

Diseño y simulación de estimadores de estado lineales y no lineales en un modelo de convertidor de potencia DC/DC

Controllability, reachability, observability performance analysis of ultra‐high voltage converter cascaded systems based on switched linear system model

Controllability analysis of Flyback converter with constant power load based on switched linear systems

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