Exploració per autor "Penella López, María Teresa"
Ara es mostren els items 1-5 de 5
-
A new MPPT method for low-power solar energy harvesting
López Lapeña, Oscar; Penella López, María Teresa; Gasulla Forner, Manuel (2010-09)
Article
Accés obertThis paper describes a new maximum-power-pointtracking (MPPT) method focused on low-power (< 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. ... -
A review of commercial energy harvesters for autonomous sensors
Penella López, María Teresa; Gasulla Forner, Manuel (2007-05-01)
Text en actes de congrés
Accés obertCurrent commercial autonomous sensors are mainly powered by primary batteries. Batteries need to be replaced and hence can become the largest and most expensive part of the system. On the other hand, our environment is ... -
A simple and efficient MPPT method for low-power PV cells
Penella López, María Teresa; Gasulla Forner, Manuel (2014-01-01)
Article
Accés obertSmall-size PV cells have been used to power sensor nodes. These devices present limited computing resources and so low complexity methods have been used in order to extract the maximum power from the PV cells. Among them, ... -
Powering wireless sensor nodes: primary batteries versus energy harvesting
Penella López, María Teresa; Albesa, Joan; Gasulla Forner, Manuel (IEEE, 2009-05-31)
Text en actes de congrés
Accés obertWireless sensor networks (WSNs) are increasingly used in many fields. Still, power supply of the nodes remains a challenge. Primary batteries are mainly used but energy harvesting offers an alternative, although not free ... -
Runtime extension of low-power wireless sensor nodes using hybrid-storage units
Penella López, María Teresa; Gasulla Forner, Manuel (2010-03)
Article
Accés obertThe sensor nodes of wireless sensor networks remain inactive most of the time to achieve longer runtimes. Power is mainly provided by batteries, which are either primary or secondary. Because of its internal impedance, a ...