Search results for " Hammerstein model"

showing 3 items of 3 documents

Nonlinear Modeling of DC/DC Converters Using the Hammerstein's Approach

2007

This paper deals with the modelling of highly nonlinear switching power-electronics converters using black-box identification methods. The duty cycle and the output voltage are chosen, respectively, as the input and the output of the model. A nonlinear Hammerstein-type mathematical model, consisting of a static nonlinearity and a linear time-invariant model, is considered in order to cope with the well-known limitations of the more common small-signal models, i.e. the entity of the variations of the variables around a well-defined steady-state operating point and the incorrect reproduction of the steady-state behavior corresponding to input step variations from the above steady-state operat…

Operating pointEngineeringbusiness.industrySystem identificationLinear modelDC/DC converters Hammerstein model identifi- cation.PID controllerConvertersPseudorandom binary sequenceNonlinear systemSettore ING-INF/04 - AutomaticaDuty cycleControl theoryElectrical and Electronic Engineeringbusiness
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Identification and robust control of DC/DC converter Hammerstein model

2008

Abstract—This paper deals with model-based robust control of dc/dc power electronic converters. The converter is described by means of a Hammerstein model consisting of the nonlinear static characteristics of the converter and a linear time-invariant (LTI) uncertainmodel whose parameters depend on the actual duty-cycle operating range. This suggests that the controller be designed using robust control techniques. In view of applying robust control, identification of the earlier LTI models is performed by means of simulation experiments, carried out on a converter switching model implemented onMATLAB/SIMULINK environment. Internal model control (IMC) structure is employed for the controller …

Engineeringbusiness.industryPower converters Hammerstein model Model identification Robust controlSystem identificationInternal modelPhase marginPID controllerControl engineeringSettore ING-INF/04 - AutomaticaControl theoryPower electronicsHammerstein model model identification power converters robust control.Electrical and Electronic EngineeringRobust controlbusinessMATLABcomputercomputer.programming_language
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Robust and Model Predictive Control applied to DC/DC converters and Shunt Active Filters

Al giorno d'oggi, la domanda di energia elettrica incrementa giorno per giorno. La gente spesso la usa con superficialità sottovalutando quanto essa sia preziosa. Fino a qualche decennio fa, la generazione di energia elettrica era centralizzata e dipendeva dallo sfruttamento delle risorse fossili. La limitatezza delle fonti fossili, insieme agli effetti ambientali del loro sfruttamento, hanno portato la ricerca a trovare vettori energetici alternativi poco inquinanti e facilmente reperibili. Lo sviluppo e la diffusione delle fonti energetiche rinnovabili hanno sancito la fine di una rete elettrica centralizzata a favore di una nuova idea di rete elettrica di tipo distribuita che permette di…

Settore ING-INF/04 - AutomaticaRoust Control MPC MMPC DC/DC QBC Quadratic Boost Modeling Hybryd Systems Hammerstein model identification SSA switching converter SAF active filter High gain boost;Roust Control MPC MMPC DC/DC QBC Quadratic Boost Modeling Hybryd Systems Hammerstein model identification SSA switching converter SAF active filter High gain boost
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