1,721,211 research outputs found
On the necessity of joint adoption of both Distributed Maximum Power Point Tracking and Central Maximum Power Point Tracking in PV systems
No full textIn this paper, the main causes that are able to limit the efficiency of Distributed Maximum Power Point Tracking (DMPPT) are
analyzed in detail. It will be shown that, to get full profit from DMPPT, it is necessary that the bulk inverter voltage belongs to an
optimal range whose position and amplitude are functions of the following factors: the number of PV modules and dedicated
DC/DC converters in a string, the atmospheric operating conditions characterizing each PV module (irradiance and temperature
values), the voltage and current ratings of the physical devices the DC/DC converters are made of, and the adopted DC/DC
converter topology. Moreover, it will be given proof of the necessity to couple the DMPPT function with a suitable centralized
MPPT function carried out by the inverter through the proper control of its own DC input voltage
Numerical evaluation of 2-D proximity effect conductor losses
No full textAn efficient FEM-based solution of two-dimensional
proximity effect transient problems is presented. Both computer
execution times and memory storage requirements can be consistently
reduced by employing a suitable formulation leading to
a sparse linear system of equations with a (slightly) higher dimensionality
with respect to the corresponding much more dense
system resulting from the standard formulation. The evaluation of
ohmic proximity losses in adjacent conductors is of great interest
in the field of power electronics since in high-frequency (HF)
transformers and inductors windings, such losses become very
significant and must be correctly predicted in order to carry out
an accurate design of magnetic devices
Calculation of per unit length resistance and internal inductance in 2-D skin-effect current driven problems
No full textOptimitation of Distributed Maximum Power Point tracking PV applications: the Scan of the Power vs Voltage input characteristic of the inverter
No full text
An algorithm for the fast estimate of the Maximum Power voltages in PV applications adopting microconverters
No full text
- …
