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Proceedings ArticleDOI

Grid tie inverter and MPPT - A review

S. Narendiran1
20 Mar 2013-pp 564-567
TL;DR: In this paper, the authors give an idea about grid tie inverter (GTI), PV inverters, Inverter topology and maximum power point tracking system and its types like Fixed Duty cycle, constant voltage, Perturb and observe (P&O) and Modified P&O, Incremental Conductance (IC), Modified IC, Ripple correlation and system oscillation methods in detail how this methods helps to give an efficient power output to the grid system from the PV arrays.
Abstract: This paper gives an idea about grid tie inverter (GTI), PV inverters, Inverter topology and Maximum power point tracking system and its types like Fixed Duty cycle, constant voltage, Perturb and observe (P&O) and Modified P&O, Incremental Conductance (IC) and Modified IC, Ripple correlation and system oscillation methods in detail how this methods helps to give an efficient power output to the grid system from the PV arrays.
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors present an overview of the different MPPT techniques, including perturbation and observation (P&O), and incremental conductance (IC) algorithms, and evaluate the performance of these two common approaches from a dynamic and steady state perspective.
Abstract: Maximum power point tracking (MPPT) controllers play an important role in photovoltaic systems They maximize the output power of a PV array for a given set of conditions This paper presents an overview of the different MPPT techniques Each technique is evaluated on its ability to detect multiple maxima, convergence speed, ease of implementation, efficiency over a wide output power range, and cost of implementation The perturbation and observation (P & O), and incremental conductance (IC) algorithms are widely used techniques, with many variants and optimization techniques reported For this reason, this paper evaluates the performance of these two common approaches from a dynamic and steady state perspective

115 citations


Cites methods from "Grid tie inverter and MPPT - A revi..."

  • ...The methods all vary in complexity, number of sensors required, digital or analogue implementation, convergence speed, tracking ability, and cost effectiveness....

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Journal ArticleDOI
TL;DR: Common used methods for the maximum power point tracking of PV systems are discussed, methods using artificial intelligence control, and mixed methods are presented, and the characteristics, advantages, and disadvantages of each method are presented.
Abstract: This paper presents an overview of the maximum power point tracking (MPPT) methods for photovoltaic (PV) systems used in the Micro Grids of PV systems. In the PV system, the output varies nonlinearly with temperature and radiation, and the point at which power is maximized appears accordingly. The MPPT of the PV system can improve output by about 25%, and it is very important to operate at this point at all times. Various methods of tracking the MPP of the PV system have been studied and proposed. In this paper, we discuss commonly used methods for the MPPT of PV systems, methods using artificial intelligence control, and mixed methods, and present the characteristics, advantages, and disadvantages of each method.

38 citations

Proceedings ArticleDOI
01 Nov 2016
TL;DR: In this paper, the maximum power point tracking (MPPT) controller for boost converter based on Perturb and Observe control is developed and compared to conventional tracking algorithm Incremental Conductance.
Abstract: In the last decade, the use of renewable energy resources instead of fossil fuels pollutants has increased exponentially. Photovoltaic energy generation is ever more important as a renewable resource since it does not cause in fuel costs, pollution, maintenance, and emitting noise compared to other renewable resources as more accessibility of solar irradiation. In this paper, The Maximum Power Point Tracking (MPPT) controller for boost converter based on Perturb and Observe control is developed and compared to conventional tracking algorithm Incremental Conductance. The different steps of the design of these controllers are presented together with its simulation. The whole system is simulated under standard climatic conditions (1000 W/m2, 250C) in MATLAB and the irradiance is varied from 600 W/m2 to 900 W/m2. Results of this simulation shown that the system with MPPT using P&O controller increase the efficiency of energy production from PV.

13 citations


Cites background from "Grid tie inverter and MPPT - A revi..."

  • ...Kerekes, [12] offer a simple and -P & O....

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Journal ArticleDOI
09 May 2019-Energies
TL;DR: Experimental results on a PV system show that the DPWM control algorithm lowers the harmonic distortion of the output voltage and current, as well as the switching losses, and better utilization of the DC-link voltage improves the PV inverter performance.
Abstract: The efficiency of a photovoltaic (PV) system strongly depends on the transformation process from solar energy to electricity, where maximum power point tracking (MPPT) is widely regarded as a promising technology to harvest solar energy in the first step. Furthermore, inverters are an essential part of solar power generation systems. Their performance dictates the power yield, system costs and reliable operation. This paper proposes a novel control technology combining discontinuous pulse width modulation (DPWM) and overmodulation technology to better utilize direct current (DC) electrical power and to reduce the switching losses in the electronic power devices in conversion. In order to optimize the performance of the PV inverter, the overmodulation region is refined from conventional two-level space vector pulse width modulation (SVPWM) control technology. Then, the turn-on and turn-off times of the switching devices in different modulation areas are deduced analytically. A new DPWM algorithm is proposed to achieve the full region control. An experimental platform based on a digital signal processing (DSP) controller is developed for validation purposes, after maximum power is achieved via a DC/DC converter under MPPT operation. Experimental results on a PV system show that the DPWM control algorithm lowers the harmonic distortion of the output voltage and current, as well as the switching losses. Moreover, better utilization of the DC-link voltage also improves the PV inverter performance. The developed algorithm may also be applied to other applications utilizing grid-tie power inverters.

12 citations


Cites background from "Grid tie inverter and MPPT - A revi..."

  • ...If th power increases while voltag incre s s, the PV array is operating in the correct dire tion; otherwise, the operational point should be adjusted to it the pposite direction [24,25]....

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  • ...If the power increases while voltage increases, the PV array is operating in the correct direction; otherwise, the operational point should be adjusted to its the opposite direction [24,25]....

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Journal ArticleDOI
TL;DR: In this paper, eight ultrahigh-voltage gain dc–dc converters are proposed, derived by the association of boost cells, coupled inductor, voltage multiplier, switched capacitors, and LC filter cells, and efficiency are evaluated.
Abstract: In this paper, eight ultrahigh-voltage gain dc–dc converters are proposed. These sets of converters are derived by the association of boost cells, coupled inductor, voltage multiplier, switched capacitors, and LC filter cells. The nonpulsating input and output converters are evaluated in terms of: principle of operation, voltage gain, voltage and current stress, estimated power losses, and efficiency. Following full analysis prototypes built in the laboratory show experimental results verifying the theoretical analysis.

8 citations


Cites background from "Grid tie inverter and MPPT - A revi..."

  • ...ture of this converter with the current source at the input is that it contributes to reaching the maximum power point (MPP) of the PV and further helps to decrease the size of the capacitor, which is in parallel to the PV [5], [6]....

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References
More filters
Journal ArticleDOI
TL;DR: New trends in power electronics for the integration of wind and photovoltaic (PV) power generators are presented and a review of the appropriate storage-system technology used for the Integration of intermittent renewable energy sources is introduced.
Abstract: The use of distributed energy resources is increasingly being pursued as a supplement and an alternative to large conventional central power stations. The specification of a power-electronic interface is subject to requirements related not only to the renewable energy source itself but also to its effects on the power-system operation, especially where the intermittent energy source constitutes a significant part of the total system capacity. In this paper, new trends in power electronics for the integration of wind and photovoltaic (PV) power generators are presented. A review of the appropriate storage-system technology used for the integration of intermittent renewable energy sources is also introduced. Discussions about common and future trends in renewable energy systems based on reliability and maturity of each technology are presented

3,799 citations

Journal ArticleDOI
TL;DR: A photovoltaic power conditioning system (PCS) with line connection with high performance such as an almost-unity power factor, a power efficiency of 94%, and a total harmonic distortion (THD) of 3.6% is proposed.
Abstract: A photovoltaic (PV) power conditioning system (PCS) with line connection is proposed. Using the power slope versus voltage of the PV array, the maximum power point tracking (MPPT) controller that produces a smooth transition to the maximum power point is proposed. The dc current of the PV array is estimated without using a dc current sensor. A current controller is suggested to provide power to the line with an almost-unity power factor that is derived using the feedback linearization concept. The disturbance of the line voltage is detected using a fast sensing technique. All control functions are implemented in software with a single-chip microcontroller. Experimental results obtained on a 2-kW prototype show high performance such as an almost-unity power factor, a power efficiency of 94%, and a total harmonic distortion (THD) of 3.6%

257 citations

Proceedings ArticleDOI
14 Jun 2011
TL;DR: In this article, the authors present a careful evaluation among the most usual MPPT techniques, doing meaningful comparisons with respect to the amount of energy extracted from the photovoltaic (PV) panel, PV voltage ripple, dynamic response and use of sensors, considering that the models are first implemented via MatLab/Simulink®, and after a digitally controlled boost DC-DC converter was implemented and connected to an Agilent Solar Array simulator in order to verify the simulation results.
Abstract: This paper presents a careful evaluation among the most usual MPPT techniques, doing meaningful comparisons with respect to the amount of energy extracted from the photovoltaic (PV) panel, PV voltage ripple, dynamic response and use of sensors, considering that the models are first implemented via MatLab/Simulink®, and after a digitally controlled boost DC-DC converter was implemented and connected to an Agilent Solar Array simulator in order to verify the simulation results. The prototype was built, the algorithms are digitally developed and the main experimental results are also presented, including dynamic responses and the experimental tracking factor (TF) for the analyzed MPPT techniques.

180 citations

Journal ArticleDOI
TL;DR: In this article, an empirical observation is used to develop a strategy, which employs a single voltage sensor and carries out simple computations for a buck converter-based maximum power point trackers.
Abstract: Maximum power point trackers (MPPTs) are used to ensure optimal utilization of solar cells. The implementation essentially involves sensing input current and voltage. An MPPT algorithm uses this information to maximize power drawn from the solar cells. Understandably, such realization is costly. Current state of the art allows replacing one of the sensors by complicated computations. In the present work, an empirical observation is used to develop a strategy, which employs a single voltage sensor and carries out simple computations for a buck converter-based MPPT

119 citations

Proceedings ArticleDOI
01 Aug 2006
TL;DR: The paper foresees that new grid interconnection features will have to be integrated more into the inverters, along with the wide-spreading use of distributed generations.
Abstract: This paper reviews the status in industry and academia regarding configurations, topologies, controls, and grid connections in grid-tied and micro-grid PV inverter applications. The paper will discuss the major technical needs to address problems in bringing cost down, increasing efficiency and improving reliability/availability. The paper foresees that new grid interconnection features will have to be integrated more into the inverters, along with the wide-spreading use of distributed generations.

53 citations


"Grid tie inverter and MPPT - A revi..." refers background in this paper

  • ...On the AC side, the inverter ensures that the sinusoidal output is synchronized to the grid frequency (may be equal to 60Hz) [5] ....

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