TITLE:
Development of Hybrid MPPT Algorithm for Maximum Power Harvesting under Partial Shading Conditions
AUTHORS:
Kannabiran Kanimozhi, Bagarudeen Raja Mohamed Rabi
KEYWORDS:
PV System, DC-DC Converter, Hybrid MPPT Controller, Tracking Efficiency, Partial Shading
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.8,
June
16,
2016
ABSTRACT: In this paper, a Hybrid MPPT algorithm is proposed to improve theefficiency of photovoltaic
(PV) systems under partial shading conditions.Partial shading occurs due to clouds, trees,
dirt and dustin PV systems. In partial shading, multiple peaks arise in
the PV characteristic curve. The Maximum power point tracking (MPPT) algorithm
adjusts the duty cycle of the switch in DC-DC converter for regulating the
input voltage at the Maximum power point (MPP) and to provide impedance
matchingi.e. input
resistance of converter equal to equivalent solar resistance of PV system at
MPP for the maximum power transfer. The Cuk converters have low switching
losses andthe highest efficiency. Therefore Cuk converter is chosen as
power conditioning circuit to trackmaximum power using Hybrid MPPT technique.The influence of algorithm parameters on
systembehaviour is investigated and the various advantages and drawbacks
of the technique areidentified for different weather conditions.
Practical results obtained using Solartech SPMO85P PV modules connected to a RL
load through Hybrid MPPT controller validates the simulated results.