Now showing items 1-4 of 4

  • A new MPPT method for low-power solar energy harvesting 

    López Lapeña, Oscar; Penella López, María Teresa; Gasulla Forner, Manuel (2010-09)
    Article
    Open Access
    This 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)
    Conference report
    Open Access
    Current 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 ...
  • Powering wireless sensor nodes: primary batteries versus energy harvesting 

    Penella López, María Teresa; Albesa, Joan; Gasulla Forner, Manuel (IEEE, 2009-05-31)
    Conference report
    Open Access
    Wireless 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
    Open Access
    The 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 ...