Memorias de investigación
Ponencias en congresos:
Variable impedance LED matrix control system for lamps in PV applications
Año:2013
Áreas de investigación
  • Tecnología electrónica y de las comunicaciones
Datos
Descripción
The ¡nterest in LED lighting has been growing recently due to the high efficacy, lifelime and ruggedness that this technology offers. However the key element to guarantee those parameters with these new electronic devices is to keep under control the working temperature of the semiconductor crystal. This paper propases a LED lamp design that fulfils the requ irements of a PV lighting systems, whose main quality criteria is reliability. It uses directly as a power supply a non·stabilized constant voltage source, as batteries. An electronic control architecture is used to regulate the current applied to the LEO matri)( according to their temperature and the voltage output value of the batteries with two pulse modulation signals (PWM) signals. The first one connects and disconnects the LEOs to the power supply and the second one connects and disconnects several emitters to the electric circuit changing its overall impedance. A prototype of the LEO lamp has been implemented and tested at different temperaturas and battery voltages.
Internacional
Si
Nombre congreso
3rd Small PV- Applications Rural Electrification and Commercial Use-
Tipo de participación
960
Lugar del congreso
Ulm, Germany
Revisores
Si
ISBN o ISSN
978-3-943891-17-1
DOI
Fecha inicio congreso
17/06/2013
Fecha fin congreso
18/06/2013
Desde la página
117
Hasta la página
122
Título de las actas
3rd Small PV- Applications Rural Electrification and Commercial Use-
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: SISTEMAS FOTOVOLTÁICOS
  • Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Ingeniería de Circuitos y Sistemas