Open AccessPerformance enhancement of photovoltaic systems with passive lossless cuk converter using non linear controller
Author(s) -
K. Kanimozhi,
B. Raja Mohamed Rabi
Publication year - 2019
Publication title -
journal of applied research and technology
Language(s) - English
Resource type - Journals
ISSN - 2448-6736
DOI - 10.22201/icat.16656423.2019.17.4.855
Subject(s) - ćuk converter , snubber , control theory (sociology) , photovoltaic system , maximum power point tracking , controller (irrigation) , computer science , boost converter , voltage , electronic engineering , engineering , capacitor , electrical engineering , control (management) , agronomy , artificial intelligence , inverter , biology
The A soft switched Cuk converter with Improved Perturb and Observe (P&O) based Maximum power point Tracker (MPPT) that uses a HybridSliding Mode (HSM) Controller is proposed to enhance performance of Photovoltaic (PV) generator. Conduction losses, voltage stress, and switching losses are reduced in soft switched Cuk converter by introducing a snubber cell which in turn improves Cuk converter efficiency. Sliding Mode Controller (SMC) is implemented in an Analog-Digital way. The main benefit of the proposed solution is that it is possible to split the sliding Mode (SM) control equation in two terms: the first one is characterized by a combination of signals wich can be defined as fast and a second part obtained by a combination of signals which can be defined as slow. The slower term suits the digital implementation because it van be treated as a linear control which works on the low frequency range and faster term implemented in analog way. Performance analysis of the Passive soft switched Cukconverter and conventional converter is ilustrated by simulation and experimental methods for various irradiation changes. Peak power is harvested from PV panel and optimal operating point is detected using HSM based MPPT method. The prototype model developed with SMP085P module validates the performance of modified Cuk converter.