Novel adaptive P&O MPPT algorithm for photovoltaic system considering sudden changes in weather condition
11 Jun 2013-pp 653-658
TL;DR: In this paper, an adaptive control algorithm is proposed, by estimating the short circuit current, to improve the tracking speed of MPPT system with rapidly varying atmospheric conditions, and the effectiveness of proposed MPPT algorithm is verified using digital simulations.
Abstract: The output power of the PV system continuously varies with change in irradiance and temperature. At a specified irradiance and temperature, the output power of the PV system can be varied from zero to maximum depending on the operating voltage and current. There are number of maximum power point tracking (MPPT) methods available in literature to operate the PV system at maximum power point (MPP). Among different MPPT methods, perturb and observe (P&O) method is widely used because of its low-cost and ease of implementation. When irradiance and temperature are constant or slowly varying, the P&O method tracks MPP steadily. However it fails to track MPP with rapid speed, for rapidly varying irradiance and temperature. In order to consider rapidly varying atmospheric conditions an adaptive control algorithm is proposed, by estimating the short circuit current. In this proposed method, current perturbation is considered to improve the tracking speed. The effectiveness of proposed MPPT algorithm in terms of faster dynamics and reduced oscillations compared to conventional P&O algorithm is verified using digital simulations.
Citations
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TL;DR: In this paper, a short-circuit current-based adaptive perturb and observe maximum power point tracking algorithm is proposed to extract the maximum power from photovoltaic (PV) panel under sudden changes in the irradiance.
Abstract: In this paper, a short-circuit current-based adaptive perturb and observe maximum power point tracking algorithm is proposed to extract the maximum power from photovoltaic (PV) panel under sudden changes in the irradiance. This scheme is divided into two algorithms: 1) current perturbation algorithm; and 2) adaptive control algorithm. The current perturbation algorithm makes the PV panel operate at maximum power point. The adaptive control algorithm identifies the operating limit violation and sets a new operating point nearer to maximum power point. These limits are derived in terms of changes in the irradiance and current. The new operating point is set by estimating the short-circuit current. This algorithm proposes variable current perturbation, which varies continuously with the irradiance. A boost converter is used to realize the proposed algorithm. The proposed algorithm is compared with a conventional algorithm and validated for sudden changes in the irradiance through the experimental results.
245 citations
Cites methods from "Novel adaptive P&O MPPT algorithm f..."
...The proposed algorithm is developed from the basic idea presented in [19]....
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...This scheme has the following improvements over the earlier work [19]: 1) variable current perturbation size ΔI is proposed; 2) ACA execution criteria is used in terms of ΔS and ΔITH ; 3) design aspects of the boost converter and current controller are presented; and 4) experimental study is carried out to validate the performance of proposed algorithm....
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TL;DR: In this paper, a comprehensive review of available models of photovoltaic panel is provided, which can help researchers in selecting a specific objective based PV panel model out of several models available in literature.
Abstract: This paper provides a comprehensive review of available models of photovoltaic panel. Modeling and simulation of photovoltaic panel (PV) in virtual environment helps in designing and performance analysis of solar based power system. This paper analyses the currently available models from two different aspects. First aspect is based on electrical characteristics of PV panel using electrical equivalent circuit or through set of mathematical equations. The other aspect is based on the characteristics of PV panel under different environmental conditions. Environmental conditions include varying temperature and non-uniform solar irradiance due to partial shading. Varying environmental conditions causes continuous change in PV panel operating point corresponding to Maximum Power Point (MPP). Therefore an accurate PV panel model built with robust control that includes these environmental conditions will certainly improve the overall performance of the solar power plant. This paper can help researchers in selecting a specific objective based PV panel model out of several models available in literature.
73 citations
30 Jul 2014-International Journal of Advanced Research in Electrical, Electronics and Instrumentation Energy
TL;DR: This paper's proposed system has used Perturb & Observe (P&O) MPPT algorithm for the design and implementation of the battery charger for extracting maximum power from a photovoltaic panel to charge the battery.
Abstract: In this paper Maximum power point tracker battery charger is proposed for extracting maximum power from a photovoltaic panel to charge the battery. The output power of the PV system continuously varies with change in irradiance and temperature. It is very important to improve the efficiency of charger. There are number of maximum power point tracking (MPPT) methods available to operate the PV system at maximum power point. The proposed system have used Perturb & Observe (P&O) MPPT algorithm for the design and implementation. When irradiance and temperature are constant or slowly varying, the P&O method tracks MPP steadily and calculate the operating point at which the battery is capable of producing maximum power. In this method, the controller provides the PWM signal to adjust the voltage, adjustment is done by Buck converter and measures power, if the power increases, further adjustments in that direction are tried until power no longer increases
27 citations
04 Mar 2016
TL;DR: In this paper, the authors proposed an improvement in tracking performance of a solar photovoltaic (SPV) module using neural network (NN) controller under fast changing environmental condition.
Abstract: Solar photovoltaic (SPV) energy have become an attractive renewable energy source because it is freely available, need less maintenance and pollution free. Since characteristics of SPV module is nonlinear in nature and varies with environmental condition, to extract maximum power from the PV module appropriate maximum power point tracking (MPPT) algorithm must be incorporated in the PV system to track the maximum power point (MPP). Although tracking performance of conventional MPPT method is high it suffers a lot in case of rapidly changing environmental condition. This paper proposes the improvement in tracking performance of a SPV module using neural network (NN) controller under fast changing environmental condition. The tracking performance of NN controller is compared with conventional perturb and observe (P&O) MPPT controller. The slow tracking of P&O and wrong tracking during changing weather condition is eliminated using NN controller. The large drooping characteristic of P&O under fall of irradiation is also eliminated. The result is verified using MATLAB-Simulink software package under fast changing irradiation and temperature.
15 citations
01 Dec 2014
TL;DR: In this paper, an adaptive perturb and observe (P&O) method is proposed based on current perturbation which has faster dynamics compared to the conventional P&O method.
Abstract: Optimum utilization of photovoltaic (PV) energy is possible if PV system is operated at its maximum power point (MPP). Since the MPP varies with change in irradiation and temperature, appropriate algorithm must be incorporated in the PV system to track the MPP. There are number of maximum power point tracking (MPPT) algorithms available in the literature with its own merits and demerits. Among different MPPT methods, perturb and observe (P&O) method is most popularly used for its easy implementation and simple structure. But conventional P&O method is sluggish in nature due to its fixed perturb amplitude. To overcome this, an adaptive P&O algorithm is proposed here based on current perturbation which has faster dynamics compared to the conventional P&O method. The effectiveness of the proposed method is verified using MALAB/Simulink both in steady as well as changing irradiation.
11 citations
References
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TL;DR: The many different techniques for maximum power point tracking of photovoltaic (PV) arrays are discussed in this paper, and at least 19 distinct methods have been introduced in the literature, with many variations on implementation.
Abstract: The many different techniques for maximum power point tracking of photovoltaic (PV) arrays are discussed. The techniques are taken from the literature dating back to the earliest methods. It is shown that at least 19 distinct methods have been introduced in the literature, with many variations on implementation. This paper should serve as a convenient reference for future work in PV power generation.
5,022 citations
"Novel adaptive P&O MPPT algorithm f..." refers background or methods in this paper
...Various MPPT algorithms have been developed [2] - [3]....
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...Once the short circuit current ISC is estimated, then the new operating point on LHS of MPP is calculated as explained in fractional short circuit method [2]....
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...The relationship between IMPP and ISC is given as [2]...
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01 Mar 1999
TL;DR: In this article, the authors present a circuit-based simulation model for a PV cell in order to allow the interaction between a proposed power converter (with its associated control arrangement) and the PV array to be studied.
Abstract: To be able to develop a complete solar photovoltaic power electronic conversion system in simulation, it is necessary to define a circuit-based simulation model for a PV cell in order to allow the interaction between a proposed power converter (with its associated control arrangement) and the PV array to be studied. To do this, it is necessary to approach the modelling process from the perspective of power electronics; that is to define the desired overall model in terms of the manner in which the electrical behaviour of the cell changes with respect to the environmental parameters of temperature and irradiance. The authors cover the development of a general model which can be implemented on simulation platforms such as PSPICE or SABER and is designed to be of use to power electronics specialists. The model accepts irradiance and temperature as variable parameters and outputs the I/V characteristic for that particular cell for the above conditions.
1,051 citations
"Novel adaptive P&O MPPT algorithm f..." refers background in this paper
...There are different equivalent circuits of PV cell [16] - [17], where the single-diode and two-diode models could be most widely used....
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01 Jan 2001
TL;DR: In this paper, an accurate PV module electrical model based on the Shockley diode equation is presented, which has a photo-current current source, a single diode junction and a series resistance, and includes temperature dependences.
Abstract: An accurate PV module electrical model is presented based on the Shockley diode equation. The simple model has a photo-current current source, a single diode junction and a series resistance, and includes temperature dependences. The method of parameter extraction and model evaluation in Matlab is demonstrated for a typical 60W solar panel. This model is used to investigate the variation of maximum power point with temperature and isolation levels. A comparison of buck versus boost maximum power point tracker (MPPT) topologies is made, and compared with a direct connection to a constant voltage (battery) load. The boost converter is shown to have a slight advantage over the buck, since it can always track the maximum power point.
896 citations
TL;DR: In this article, a microprocessor-controlled tracker capable of online voltage and current measurements and programmed with both voltage-based and current-based MPPT algorithms is constructed, where the load of the solar system is either a water pump or a resistance.
Abstract: Detailed theoretical and experimental analyses are presented for the comparison of two simple fast and reliable maximum power point tracking (MPPT) techniques for photovoltaic systems (PV): the voltage-based (VMPPT) and the current-based (CMPPT) approaches. A microprocessor-controlled tracker capable of online voltage and current measurements and programmed with both VMPPT and CMPPT algorithms is constructed. The load of the solar system is either a water pump or a resistance. Simulink facilities are used for simulation and modeling of the novel trackers. The main advantage of this new MPPT, as compared with present trackers, is the elimination of reference (dummy) cells, which results in a more efficient, less expensive, and more reliable PV system.
761 citations
20 Jun 2004
TL;DR: In this article, a modified adaptive hill climbing (MAHC) MPPT method is introduced, which can be treated as an extension of the traditional hill climbing algorithm, and it can avoid tracking deviation and result in improved performance in both dynamic response and steady-state.
Abstract: Maximum power point tracking (MPPT) must usually be integrated with photovoltaic (PV) power systems so that the photovoltaic arrays are able to deliver maximum available power. In this paper, a modified adaptive hill climbing (MAHC) MPPT method is introduced. It can be treated as an extension of the traditional hill climbing algorithm. The simulation and experimental results show that the proposed MPPT control can avoid tracking deviation and result in improved performance in both dynamic response and steady-state.
676 citations
"Novel adaptive P&O MPPT algorithm f..." refers background in this paper
...Among different MPPT methods, much focus has been on perturb and observe (P&O) [4] - [5] and hill climbing (HC) [6] - [7] methods....
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