Open AccessSupercapacitor charge redistribution analysis for power management of wireless sensor networks
Author(s) -
Chai Ruizhi,
Ying Hanbin,
Zhang Ying
Publication year - 2017
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2015.1029
Subject(s) - supercapacitor , redistribution (election) , capacitance , electronic engineering , computer science , wireless sensor network , power management , power (physics) , electrical engineering , engineering , computer network , physics , electrode , quantum mechanics , politics , political science , law
To support many power management applications in wireless sensor networks, a previously developed model is modified to predict the terminal behaviour of a supercapacitor under a dynamic charging/discharging power profile. In addition, a robust model parameter identification method based on the genetic algorithm is developed to determine the model parameters using a dynamic test and a self‐discharge experiment. On the basis of the supercapacitor power input model, charge redistribution related figures of merit are derived and used to evaluate the significance of charge redistribution for supercapacitors with various rated capacitance. The results show that supercapacitors with different sizes share similar charge redistribution phenomenon. Furthermore, the charge redistribution significance is studied from several perspectives to provide guidelines for designing power management techniques that can achieve full potential of the energy stored in the supercapacitors.