PT Journal
AU Andresen, M
   Buticchi, G
   Liserre, M
TI Thermal Stress Analysis and MPPT Optimization of Photovoltaic Systems
SO IEEE Transactions on Industrial Electronics
PY 2016
BP 4889
EP 4898
VL 63
IS 8
PU IEEE
DI 10.1109/TIE.2016.2549503
WP https://macau.uni-kiel.de/receive/publ_mods_00001317
LA en
DE Thermal stresses; Stress; Maximum power point trackers; Power electronics; Algorithm design and analysis; Reliability
SN 1557-9948
AB In the last years, the optimization of the energy harvesting of photovoltaic systems during fast variable irradiance conditions has been an active area of research and of competition among the companies. The proposed fast maximum power point tracking (MPPT) algorithms can produce extremely variable loading of the power semiconductors resulting in a decrease of the system lifetime, which in consequence can nullify the economic advantage of higher energy harvesting. This work analyzes the problem with a deep theoretical and laboratory work. Then, a multiobjective MPPT, which limits the positive temperature gradient and the maximum junction temperature of the power semiconductors, is introduced and fully validated in the laboratory with a mission profile emulating variable irradiance conditions.
PI New York, NY
ER