Prof. Eng. Radu OLARU PhD, Eng. Robert GHERCA PhD Student
Rezumat
In aceasta lucrare prezentam un studiu teoretic al generatorilor electromagnetici pentru recuperarea
energiei din vibratii ambientale. Generatorul este modelat ca un oscilator de ordinul doi subamortizat. Optimizarea generatorului pentru obtinerea valorilor maxime ale transmisibilitatii si puterii electrice s-a facut prin considerarea unei
pulsatii de rezonanta diferita de pulsatia naturala care este folosita curent in literatura. Raspunsul la intrarea treapta a sistemului este util in analiza generatoarelor supuse la variatii bruste ale amplitudinii vibratiilor aleatoare.
Cuvinte cheie: recuperarea energieigeneratori electromagneticifenomen de rezonantaoscilator subamortizat
Abstract
In this paper we present a theoretical study of the electromagnetic generators for harvesting energy from ambient vibrations. The generator is modeled as an oscillator of second order under-damped. Generator optimization for
achieving the maximum values of transmissibility and electrical power has performed by considering a resonance
frequency different to natural frequency that is usually used in literature. Step response of the system is useful to analysis of the generators subjected to suddenly variations of the random vibration amplitude.
Keywords: energy harvestingelectromagnetic generatorsresonance phenomenonunder-damped oscillator
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