0000000000164271

AUTHOR

Fabio Gómez-estern

showing 3 related works from this author

Control of Power Converters with Hybrid Affine Models and Pulse-Width Modulated Inputs

2021

In this paper, hybrid dynamical systems theory is applied to the analysis and control of switched converters with Pulse-Width Modulated (PWM) inputs. The system is described by a state-space model with continuous flows and discrete jumps, without averaged equations. The modulation effects are captured in full without using time-dependent signals, by enlarging the state vector to include the PWM waveform generation process. Furthermore, the sample-and-hold mechanism associated with the sampling frequency is also taken into account with this approach. A control law is proposed based on a Lyapunov function candidate. Furthermore, convergence sets and the steady state jitter, inherent to PWM-ba…

Lyapunov function0209 industrial biotechnologySteady state (electronics)Dynamical systems theoryComputer scienceLyapunov analysis02 engineering and technologyDynamical system01 natural sciencessymbols.namesakeHybrid dynamical system020901 industrial engineering & automationSettore ING-INF/04 - AutomaticaControl theory[INFO.INFO-AU]Computer Science [cs]/Automatic Control EngineeringPWMConverter control hybrid dynamical system Lyapunov analysis PWM0101 mathematicsElectrical and Electronic EngineeringJitterhybrid dynamical system010102 general mathematicsState vectorConvertersConverter controlsymbolsPulse-width modulation
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Hybrid Modelling and Control of a Class of Power Converters With Triangular-Carrier PWM Inputs

2021

In this paper, a new control design procedure for a class of power converters based on hybrid dynamical systems theory is presented. The continuous-time dynamics, as voltage and current signals, and discretetime dynamics, as the on-off state of the switches, are captured with a hybrid model. This model avoids the use of averaged and approximated models and includes the PWM as well as the sample-and-hold mechanism, commonly used in the industry. Then, another simplified hybrid system, whose trajectories match with the original one, is selected to design the controller and to analyse stability properties. Finally, an estimation of the chattering in steady state of the voltage and current sign…

Steady state (electronics)hybrid dynamical systemsGeneral Computer ScienceDynamical systems theoryComputer scienceSwitched affine systemsGeneral EngineeringConvertersHybrid dynamical systemsPower (physics)TK1-9971switched affine systemsSettore ING-INF/04 - AutomaticaControl theoryHybrid systemControl systemLyapunov stabilityControl of power convertersGeneral Materials SciencePWMElectrical engineering. Electronics. Nuclear engineeringControl of power converters hybrid dynamical systems Lyapunov stability PWM switched affine systemsPulse-width modulation
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Avaluació continua con Goodle-GMS a més de 800 alumnes en Enginyeria Química.

2014

L'objectiu d'aquesta experiència ha estat la d'establir un sistema d'avaluació contínua en assignatures amb gran quantitat d'alumnes de manera que no suposin un excessiu treball per al docent, que permeti generar una retroalimentació als alumnes ràpida, de manera que estimuli el treball dels estudiants. L'experiència ha estat realitzada simultàniament a 859 alumnes matriculats de l'assignatura "Química", corresponent a 1r dels Graus d'Enginyeria de l'Energia (85), Enginyeria Aeroespacial (137), Enginyeria de les Tecnologies Industrials (459) i Enginyeria Química (141), durant el segon quadrimestre a l'Escola Tècnica Superior d'Enginyeria de la Universitat de Sevilla. S'han plantejat 5 probl…

Goodle-GMS continuous assessment telematics assessment large groupsMetodología basada en problemas Goodle-GMS evaluación telemáticalcsh:Llcsh:L7-991lcsh:Education (General)lcsh:Education
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