Journal ArticleDOI
Optimization of perturb and observe maximum power point tracking method
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In this article, the perturb and observe (PO) algorithm is used in photovoltaic (PV) systems to maximize the PV array output power by tracking continuously the maximum power point (MPP) which depends on panels temperature and on irradiance conditions.Abstract:
Maximum power point tracking (MPPT) techniques are used in photovoltaic (PV) systems to maximize the PV array output power by tracking continuously the maximum power point (MPP) which depends on panels temperature and on irradiance conditions. The issue of MPPT has been addressed in different ways in the literature but, especially for low-cost implementations, the perturb and observe (PO moreover, it is well known that the P&O algorithm can be confused during those time intervals characterized by rapidly changing atmospheric conditions. In this paper it is shown that, in order to limit the negative effects associated to the above drawbacks, the P&O MPPT parameters must be customized to the dynamic behavior of the specific converter adopted. A theoretical analysis allowing the optimal choice of such parameters is also carried out. Results of experimental measurements are in agreement with the predictions of theoretical analysis.read more
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Proceedings ArticleDOI
One novel variable step-size MPPT algorithm for photovoltaic power generation
TL;DR: A novel variable step-size MPPT algorithm is proposed in this paper, which could adjust the step size online intelligently and can provide a simple and effective way to ameliorate both dynamic and steady state response characteristics.
Journal ArticleDOI
Implementation of an Improved Incremental Conductance MPPT Control Based Boost Converter in Photovoltaic Applications
TL;DR: In this article, the authors presented the simulation and hardware implementation of auto-scaling variable step-size MPPT in low cost and low power consumption μ-controller (PIC16F877A).
Proceedings ArticleDOI
Dynamic behaviour of hill-climbing MPPT algorithms at low perturbation rates
TL;DR: In this paper, a detailed comparison of the two hill-climbing algorithms on the basis of system stability is presented, and the results obtained using a 540Wp PV experimental setup with a resistive load show very good agreement with the theoretical analysis and numerical simulations.
Proceedings ArticleDOI
A modified module integrated — Interleaved boost converter for standalone photovoltaic (PV) application
TL;DR: In this article, a modified interleaved Flyback inverter for standalone PV applications is presented, which is developed by interleaving of three Flyback cells along with one PV source.
Proceedings ArticleDOI
An improved Extremum-Seeking based MPPT for grid-connected PV systems with partial shading
TL;DR: An Extremum-Seeking Control (ESC) based method to track the global power peak under non-uniform irradiance conditions and can reach the global peak with a faster convergence rate and higher tracking efficiency than conventional approaches.
References
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Journal ArticleDOI
Maximum photovoltaic power tracking: an algorithm for rapidly changing atmospheric conditions
TL;DR: In this article, the authors developed an incremental conductance (IncCond) algorithm to track the maximum power operating point (MPOP) of photovoltaic (PV) power generation systems.
Journal ArticleDOI
Development of a microcontroller-based, photovoltaic maximum power point tracking control system
TL;DR: In this paper, a buck-type DC/DC converter is used to maximize the photovoltaic array output power, irrespective of the temperature and irradiation conditions and of the load electrical characteristics.
Journal ArticleDOI
Comparative study of maximum power point tracking algorithms
D. P. Hohm,Michael Ropp +1 more
TL;DR: It is found that the P&O method, when properly optimized, can have MPPT efficiencies well in excess of 97%, and is highly competitive against other MPPT algorithms.
Journal ArticleDOI
Implementation of a DSP-controlled photovoltaic system with peak power tracking
TL;DR: A simple method of tracking the maximum power points (MPPs) and forcing the system to operate close to these points is presented, and the principle of energy conservation is used to derive the large- and small-signal model and transfer function.
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