Now showing items 1-20 of 30

    • A design-oriented combined approach for bifurcation prediction in switched-mode power converters 

      El Aroudi, Abdelali; Rodríguez Vilamitjana, Enric; Leyva Grasa, Ramon; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2010-03)
      Article
      Restricted access - publisher's policy
      In this brief, two different approaches are combined for studying the stability of a buck switching power dc-dc converter and for predicting its bifurcations. Instability indexes derived from both approaches are combined ...
    • A frequency domain approach for controlling chaos in switching converters 

      Rodríguez Vilamitjana, Enric; Alarcón Cot, Eduardo José; Iu, H. H. C.; El Aroudi, Abdelali (2010)
      Conference report
      Open Access
      The purpose of this paper is the synthesis from the frequency domain standpoint of a controller for switching power converters with the aim to eliminate bifurcation and chaotic behavior. Firstly the paper analyzes the ...
    • A nonlinear time-varying map of a buck power-switching amplifier for wide band tracking applications 

      El Aroudi, Abdelali; Alarcón Cot, Eduardo José; Rodríguez Vilamitjana, Enric; Leyva Grasa, Ramon (Emerald, 2010)
      Article
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      Purpose The purpose of this paper is to characterize the nonlinear dynamical behaviour of a buck-based power-switching amplifier controlled by fixed frequency and pulse width modulation with a proportional-integral ...
    • A ripple-based design-oriented approach for predicting fast-scale instability in DC–DC switching power supplies 

      Rodríguez Vilamitjana, Enric; El Aroudi, Abdelali; Guinjoan Gispert, Francisco; Alarcón Cot, Eduardo José (2011-12)
      Article
      Restricted access - publisher's policy
      This paper presents a design-oriented analytical approach for predicting fast-scale instability in power electronics converters under voltage-mode control strategy. This approach is based on the use of the ripple amplitude ...
    • Analysis of bifurcation behavior of a piecewise linear vibrator with electromagnetic coupling for energy harvesting applications 

      El Aroudi, Abdelali; Ouakad, Hassen; Benadero García-Morato, Luis; Younis, Mohammad (2014-05)
      Article
      Open Access
      Recently, nonlinearities have been shown to play an important role in increasing the extracted energy of vibration-based energy harvesting systems. In this paper, we study the dynamical behavior of a piecewise linear (PWL) ...
    • Analysis of nonlinear and non-smooth dynamics of a self-oscillating series resonant inverter 

      Benadero García-Morato, Luis; Ponce Núñez, Enrique; El Aroudi, Abdelali (2017)
      Conference report
      Open Access
      In this paper, the dynamics of a dc-ac resonant self-oscillating LC series inverter is analyzed from the point of view of piecewise smooth dynamical systems. Our system is defined by two symmetric configurations and its ...
    • Bifurcation analysis in a self-oscillating series resonant converter 

      Ponce, Enrique; Benadero García-Morato, Luis; El Aroudi, Abdelali (De Gruyter Open Sp. z o.o., 2020-02-10)
      Part of book or chapter of book
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      In this paper, the dynamics of a dc-ac resonant self-oscillating LC series inverter is analyzed from the point of view of piecewise smooth dynamical systems. The system under study is defined by two symmetric configurations ...
    • Chaos controller for switching regulators aiming enhanced design-space towards miniaturization 

      Rodríguez Rodríguez, Enric; El Aroudi, Abdelali; Martínez García, Herminio; Poveda López, Alberto; Alarcón Cot, Eduardo José (Institute of Electronics, Information and Communications Engineers (IEICE), 2014-03-17)
      Article
      Open Access
      This paper tackles the control of fast-scale instabilities in a buck switching power converter aiming to expand its design-space towards miniaturization. After briefly revisiting the working principle of existing chaos ...
    • Chaos controller for switching regulators aiming enhanced design-space towards miniaturization 

      Rodríguez Rodríguez, Enric; El Aroudi, Abdelali; Martínez García, Herminio; Poveda López, Alberto; Iu, H.; Alarcón Cot, Eduardo José (2012)
      Conference report
      Open Access
      This paper tackles the control of fast-scale instabilities in a buck switching power converter aiming to expand its design-space towards miniaturization. After briefly revisiting the working principle of existing chaos ...
    • Chaotic behaviour in on-chip automatic tuning loops for continuous-time filters 

      Martínez García, Herminio; El Aroudi, Abdelali; Alarcón Cot, Eduardo José; Poveda López, Alberto (Universidad Politécnica de Madrid (UPM), 2013)
      Conference lecture
      Open Access
    • Delay effects on the limit cycling behavior in an H-bridge resonant inverter with zero current switching control strategy 

      Benadero García-Morato, Luis; Torres Peral, Francisco; El Aroudi, Abdelali; Olalla Martinez, Carlos; Ponce Núñez, Enrique; Martínez Salamero, Luis (2018)
      Conference report
      Open Access
      In this paper, bifurcations of limit cycles in a H-bridge LC resonant inverter under a zero current switching control strategy with delay in the switching action are analyzed. Mathematical analysis and numerical simulations ...
    • Delay effects on the limit cycling behavior in resonant inverters with state feedback 

      Benadero García-Morato, Luis; El Aroudi, Abdelali; Ponce, Enrique (2019-10-01)
      Article
      Restricted access - publisher's policy
      Bifurcations of limit cycles in an H-bridge LC resonant inverter are reexamined taking into account a time delay in the switching transition. The analysis is accomplished by means of a model of the inverter that compresses, ...
    • Demonstration of ripple-based index for predicting fast-scale instability in switching power converters 

      Rodríguez Vilamitjana, Enric; Alarcón Cot, Eduardo José; El Aroudi, Abdelali (2009-05)
      Conference report
      Open Access
      In this paper a simplified model based on the exact discrete-time map of a buck switching power converter with proportional control, which captures all its dynamics, allows deriving a closed-form stability condition for ...
    • Dynamic analysis of self-oscillating H-bridge inverters with state feedback 

      Benadero García-Morato, Luis; Torres Peral, Francisco; Ponce Núñez, Enrique; El Aroudi, Abdelali (2020-01)
      Article
      Restricted access - publisher's policy
      This paper presents a comprehensive approach to analyze the dynamics of a generalized model of resonant inverters using nonsmooth dynamical system theory. The model simultaneously covers both parallel and series resonant ...
    • Dynamical analysis of an interleaved single inductor TITO switching regulator 

      El Aroudi, Abdelali; Moreno Font, Vanessa; Benadero García-Morato, Luis (2009-06)
      Article
      Open Access
      We study the dynamical behavior of a single inductor two inputs two outputs (SITITO) power electronics DC-DC converter under a current mode control in a PWM interleaved scheme. This system is able to regulate two, generally ...
    • Dynamics and stability issues of a single-inductor dual-switching DC-DC converter 

      Moreno Font, Vanessa; El Aroudi, Abdelali; Calvente, Javier; Giral, Roberto; Benadero García-Morato, Luis (2010-02-08)
      Article
      Open Access
      A single-inductor two-input two-output power electronic dc–dc converter can be used to regulate two generally nonsymmetric positive and negative outputs by means of a pulsewidth modulation with a double voltage feedback. ...
    • Instabilities in digitally controlled voltage-mode synchronous buck converter 

      Dongsheng, Yu; Herbert, H. C. Iu; Hao, Chen; Rodriguez, E.; Alarcón Cot, Eduardo José; El Aroudi, Abdelali (2012)
      Article
      Restricted access - publisher's policy
      In this paper, instabilities and bifurcation behavior in a DC–DC digitally controlled voltagemode synchronous buck converter (SBC) are studied. The bifurcation diagram of the system under a proportional-integral (PI) ...
    • Limit cycle bifurcations in resonant LC power inverters under zero current switching strategy 

      Benadero García-Morato, Luis; Ponce, Enrique; El Aroudi, Abdelali; Torres Peral, Francisco (2018-01)
      Article
      Open Access
      The dynamics of a DC-AC self-oscillating LC resonant inverter with a zero current switching strategy is considered in this paper. A model that includes both the series and the parallel topologies and accounts for parasitic ...
    • Modeling and bifurcation behavior of multi-phase SIMIMO DC-DC switching regulators 

      Moreno Font, Vanessa; El Aroudi, Abdelali; Benadero García-Morato, Luis (2010-11)
      Article
      Restricted access - publisher's policy
      In this paper, different discrete-time models in the form of maps are proposed and analyzed in order to describe the dynamics of single inductor multiple-input multiple-output (SIMIMO) switching DC–DC converters. These ...
    • Modeling of switching frequency instabilities in buck-based DC-AC H-bridge inverters 

      El Aroudi, Abdelali; Rodríguez Vilamitjana, Enric; Orabi, Mohamed; Alarcón Cot, Eduardo José (2011-02)
      Article
      Restricted access - publisher's policy
      In this paper, the dynamical behavior of a full bridge DC–AC buck inverter controlled by fixed frequency and PWM is studied. After showing that the system can undergo both period-doubling and Neimark–Sacker bifurcation at ...