scispace - formally typeset
Search or ask a question
Proceedings ArticleDOI

Optimized maximum power point tracking technique for the simulation of photovoltaic system sourced for higher output power

J. Raju1, B. Tharun Kumar1
01 Feb 2017-pp 225-228
TL;DR: Evaluating results of a model connecting a step-up converter with function of Max.
Abstract: Among numerous research centres across the world, has been researching models that accurately denote the PV modules systems and its operation. This context of the paper gives a simplified photovoltaic system, which makes ease for the simulation work on photovoltaic systems in MATLAB/Simulink software and simplified MPPT method for higher power outcome. The purpose of this paper evaluating results of a model connecting a step-up converter with function of Max. Power Point Tracking applying on the technique P&O (Perturb & Observe). Further, this converter level up the voltage produced by the photovoltaic modules, to connect the PV array to the grid side through LCI. This model also further used to connect various different sources making an efficient hybrid system.
Citations
More filters
Journal ArticleDOI
TL;DR: This research article, on the basis of state of art review of renewable energy systems such as solar Photo-voltaic, Wind Turbine, Fuel Cell and Hybrid Renewable Energy System, finds artificial intelligence based hybrid MPPT technique gives better performance than other MPPT techniques.
Abstract: Due to non-linear characteristics of renewable energy sources, a Maximum Power Point Tracking (MPPT) technique is adopted to maximize the output power. In this research article, on the basis of state of art review of renewable energy systems such as solar Photo-voltaic, Wind Turbine, Fuel Cell and Hybrid Renewable Energy System. The investigators have gone through the various MPPT techniques for different renewable energy systems out of which artificial intelligence based hybrid MPPT technique gives better performance as compared to other MPPT techniques.

14 citations

Journal ArticleDOI
02 Jul 2018
TL;DR: The results obtained by the work performed on CHB-MLI with DC-DC boost converter using FLC based MPPT controller to that of results obtained with the conventional P&O method are compared.
Abstract: This paper describes the work performed on a single phase 9-level cascaded H-Bridge multilevel inverter (CHB-MLI) for photovoltaic (PV) power generation, using two methods of maximum power point tracking (MPPT)—namely fuzzy logic controller (FLC) and perturbation & observation (P&O). The MPPT scheme is used to extract maximum power from solar PV cells. PV cell temperature and solar irradiation are input quantities and the two used methods estimate the optimum duty cycle to ensure DC-DC boost converter maximum output. This paper also compares the results obtained by the work performed on CHB-MLI with DC-DC boost converter using FLC based MPPT controller to that of results obtained with the conventional P&O method. The fuzzy logic controller works with imprecise inputs, it does not need an accurate mathematical model and it can handle nonlinearity well. Besides, fuzzy is more robust as compared to the conventional non-linear controller. The genetic algorithm (GA) based Selective Harmonic Elimination (SHE) technique is also applied to CHB-MLI for the elimination of harmonics from the output voltage. In the work reported in this paper on PV inverter making use of the Fuzzy MPPT technique, the obtained total harmonic distortion (THD) of the output voltage without filter circuit and with filter circuit are within IEEE standard 519.

12 citations


Cites background from "Optimized maximum power point track..."

  • ...They suffer from high oscillation around MPP and more power loss [21]....

    [...]

  • ...The P&O algorithm is very common and suitable for practical applications [19,21,22]....

    [...]

Journal ArticleDOI
TL;DR: In this article , the performance of a centralized single-stage grid-tied three-level diode clamped inverter connected to a PV-fuel cell unit is evaluated and an active and reactive power open-loop control scheme is employed to operate the inverter.
Abstract: Power generating entities’ connection to utility grids requires power converters to achieve high efficiency and low injected current harmonic distortion. The control of the power converter plays a crucial role in the grid-tied power converter’s performance. Various control techniques for grid-tied inverters ranging from classical to intelligent are introduced in several exist. Evaluating the current state and trend in grid-tied power inverters and related control methods, research shows that most works in this area focus on grid integration using the close-loop and other advanced control approaches. This is because these control methods are preferred since they provide adequate performance in case of uncertainties in the system. This investigation can aprove that PQ open-loop control technique can operate sufficiently and cost-effectively in grid-tied renewable and alternative power systems under normal operating conditions. Hence, this paper aims to assess the performance of a centralized single-stage grid-tied three-level diode clamped inverter connected to a PV-Fuel cell unit. An active and reactive power open-loop control scheme is employed to operate the inverter and achieves a current harmonic distortion below 5%. The system comprises a 150 kW/700 V PV, a 150 kW/1400 V fuel cell, a 265 kW multilevel inverter operating at a rated voltage of 415 V, and an LCL filter. Two operating scenarios are adopted to investigate the system’s responses further. In the first scenario, a local load of 509.2 kW is supplied from the PV-fuel cell inverter. The load also receives the grid’s power to meet the demand as the PV-fuel cell inverter provides only 265 kW. Whereas in the other scenario, the PV-fuel cell unit provides power to supply a local load while transporting the surplus to the grid. The results reveal the developed model’s good performance with a current harmonic distortion of 0.33%.

2 citations

Book ChapterDOI
01 Jan 2020
TL;DR: Simulation results have been carried out and it is found that the proposed model using ANFIS-based MPPT controller gives better performance as compared to other specified MPPT controllers.
Abstract: Maximum Power Point Tracking (MPPT) is a control technique for the dynamic optimization of power production by a Solar Photo-voltaic (SPV) module. MPPT is useful not only in SPV applications but also whenever the power produced using the power source must be maximized regardless of some unmanageable parameters. In this chapter, different MPPT techniques such as Perturb and Observe (P&O), Fuzzy Logic (FL), Artificial Neural Network (ANN), and Adaptive Neuro-Fuzzy Inference System (ANFIS) have been designed in MATLABTM/SIMULINKTM environment for proposed SPV system. Simulation results have been carried out to record the tracking performance of MPPT controllers by introducing changes in the solar radiations. It is found that the proposed model using ANFIS-based MPPT controller gives better performance as compared to other specified MPPT controllers.

1 citations

References
More filters
Journal ArticleDOI
TL;DR: Evaluations among the most usual maximum power point tracking techniques, doing meaningful comparisons with respect to the amount of energy extracted from the photovoltaic (PV) panel [tracking factor) in relation to the available power, PV voltage ripple, dynamic response, and use of sensors.
Abstract: This paper presents evaluations among the most usual maximum power point tracking (MPPT) techniques, doing meaningful comparisons with respect to the amount of energy extracted from the photovoltaic (PV) panel [tracking factor (TF)] in relation to the available power, PV voltage ripple, dynamic response, and use of sensors. Using MatLab/Simulink and dSPACE platforms, a digitally controlled boost dc-dc converter was implemented and connected to an Agilent Solar Array E4350B simulator in order to verify the analytical procedures. The main experimental results are presented for conventional MPPT algorithms and improved MPPT algorithms named IC based on proportional-integral (PI) and perturb and observe based on PI. Moreover, the dynamic response and the TF are also evaluated using a user-friendly interface, which is capable of online program power profiles and computes the TF. Finally, a typical daily insulation is used in order to verify the experimental results for the main PV MPPT methods.

1,205 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed a high performance single-stage inverter topology for grid connected PV systems, which can not only boost the usually low photovoltaic (PV) array voltage, but can also convert the solar dc power into high quality ac power for feeding into the grid, while tracking the maximum power from the PV array.
Abstract: This paper proposes a high performance, single-stage inverter topology for grid connected PV systems. The proposed configuration can not only boost the usually low photovoltaic (PV) array voltage, but can also convert the solar dc power into high quality ac power for feeding into the grid, while tracking the maximum power from the PV array. Total harmonic distortion of the current, fed into the grid, is restricted as per the IEEE-519 standard. The proposed topology has several desirable features such as better utilization of the PV array, higher efficiency, low cost and compact size. Further, due to the very nature of the proposed topology, the PV array appears as a floating source to the grid, thereby enhancing the overall safety of the system. A survey of the existing topologies, suitable for single-stage, grid connected PV applications, is carried out and a detailed comparison with the proposed topology is presented. A complete steady-state analysis, including the design procedure and expressions for peak device stresses, is included. Necessary condition on the modulation index "M" for sinusoidal pulsewidth modulated control of the proposed inverter topology has also been derived for discontinuous conduction mode operation. All the analytical, simulation and experimental results are presented.

636 citations

Journal ArticleDOI
TL;DR: In this article, a single-stage three-phase grid-connected photovoltaic (PV) system is implemented to realize the maximum power point tracking (MPPT), synchronization with the utility voltage, and harmonics reduction for output current.
Abstract: Single-stage grid-connected photovoltaic (PV) systems have advantages such as simple topology, high efficiency, etc. However, since all the control objectives such as the maximum power point tracking (MPPT), synchronization with the utility voltage, and harmonics reduction for output current need to be considered simultaneously, the complexity of the control scheme is much increased. This paper presents the implementation of a single-stage three-phase grid-connected PV system. In addition to realize the aforementioned control objectives, the proposed control can also remarkably improve the stability of the MPPT method with a modified incremental conductance MPPT method. The reactive power compensation for local load is also realized, so as to alleviate grid burden. A DSP is employed to implement the proposed MPPT controller and reactive power compensation unit. Simulation and experimental results show the high stability and high efficiency of this single-stage three-phase grid-connected PV system.

382 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

Journal ArticleDOI
TL;DR: An inverter for grid-connected photovoltaic systems is presented in this paper, which can globally locate the maximum power point of the panel over wide insolation and feed the solar energy to the grid.
Abstract: An inverter for grid-connected photovoltaic systems is presented in this paper. It can globally locate the maximum power point of the panel over wide insolation and feed the solar energy to the grid. Its structure mainly integrates a previously developed maximum point tracking method and output current shaping function into a buck-boost-derived converter and then inverts the shaped current through a grid frequency bridge to the grid. Instead of having a storage capacitor connecting in parallel with the converter output, series connection is used, so that the required capacitor voltage rating is lower than that in classical inverters. Most importantly, the inverter output current harmonics are less sensitive to the capacitor value. A 30-W laboratory prototype has been built. The tracking capability, inversion efficiency, and large-signal responses at different insolations have been investigated. Detailed analysis on the inverter performance has been performed. The theoretical predictions are verified with the experimental results.

175 citations