A Single-Stage Three-Phase Grid-Connected Photovoltaic System With Modified MPPT Method and Reactive Power Compensation

Wu, Libo; Zhao, Zhengming; Liu, Jianzheng

doi:10.1109/tec.2007.895461

Cited by 364 publications

(121 citation statements)

References 14 publications

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“…Well-known "maximum power point tracking (MPPT)" is done through a particular control of a converter. Various techniques have been proposed depending on their complexity, sensors used, convergence,setup, and in further aspects [2]- [8], [22]- [25].…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of Grid Connected PV Inverter using Optimal Maximum Power Point Tracking Algorithm with Climatic Parameters Estimation

Suresh¹,

Sowjanya²,

Kiran³

2017

Nctet-2k17

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Abstract:In this paper, a control strategy for power flow management of a grid connected photovoltaic (PV) based system with an efficient ANFIS based dc to dc converter is presented. The proposed system aims to satisfy the Grid Voltage demand, manage the power flow from different sources, inject the surplus power into the grid, and charge the battery from the grid as and when required. The MPPT technique helps to trim down the hardware setup by means of only one voltage sensor, while increases the array power efficiency and MPPT response time. The simulation results are provided to validate the MPPT algorithm operation as well as the climatic parameters estimation capabilities. AnANFIS based boost DC to DC converter is used to harness power from Solar. The proposed converter architecture has reduced number of power conversion stages with less component count and reduced losses compared with existing grid connected PV systems. This improves the efficiency and the reliability of the system. Simulation results obtained using MATLAB/Simulink show the performance of the proposed ANFIS control strategy for power flow management under various modes of operation.

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Section: Introductionmentioning

confidence: 99%

“…However, it involves an increased hardware and software complexity.Many improvements are proposed using variable andmodified step size algorithms [8], [22]- [24]. A sliding modecontrol has been used to improve tracking accuracy [11] andInCond using reference voltage and direct duty ratio perturbation [12].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Grid Connected PV Inverter using Optimal Maximum Power Point Tracking Algorithm with Climatic Parameters Estimation

Suresh¹,

Sowjanya²,

Kiran³

2017

Nctet-2k17

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“…Traditionally, the over voltage problem has been solved by reactive power compensation methods [19][20][21][22][23][24][25][26]. The conventional technique is based on a droop function [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…The advances in networked control systems, where low bandwidth communication infrastructure links cooperating entities, offer new scenarios to possibly improve the performance of conventional techniques and/or to achieve complementary operating features. For example, in [21][22][23], the local data is sent to all the PV units with the aim of equalising the reactive power injection. In addition, non-linear control techniques have been used to optimise the operation of these systems, such as fuzzy logic in [24], neural network in [25], swarm optimisation in [26], and genetic and evolutionary algorithms in [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Comparative study of reactive power control methods for photovoltaic inverters in low‐voltage grids

Momeneh¹,

Castilla²,

Miret³

et al. 2016

IET Renewable Power Generation

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The increasing installation of photovoltaic panels in low-voltage grids causes an over voltage problem, especially during high production and low consumption periods. Generally the over voltage problem is overcome by implementing reactive power control methods. The advances in networked control systems theory and practice create new scenarios where reactive power control methods can offer additional features and benefits. To explore these new capabilities, this study presents two new reactive power control methods that exploit the networked approach. These two methods are evaluated in a comparative reference framework that also includes the base-line case where no reactive control method is applied, the conventional droop method approach, and a solution based on a near-optimal location of a high power STATCOM derived from one of the new proposed networked methods. The main merit factors used to compare the control methods are the maximum voltage across the distribution grid, the power factor in the point of common coupling, and the total power losses and economic cost of the installation. With these merit factors, the advantages and limitations of the new and existing control methods are revealed and discussed. A useful discussion for selecting the best control solution is also reported.

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“…To overcome this problem, several methods for extracting the maximum power have been proposed in literature [3,4], and a careful comparison of these methods can result in important information for the design of these systems. There are a lot of techniques are used for MPPT such as 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, which are briefly described in this section [5,6]. This paper, target is to have an on-line efficient optimization (MPPT) algorithm using fuzzy logic technique.…”

Section: Introductionmentioning

confidence: 99%

On-Line Maximum Power Point Tracking for Photovoltaic System Grid Connected Through DC-DC Boost Converter and Three Phase Inverter

Mahfouz¹

2015

J Fundam Renewable Energy Appl

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Photovoltaic solar electricity and solar thermal has the highest potential of all the renewable energies, since solar energy is a practically unlimited resource and available everywhere. These days photovoltaic energy has the potential to play an important role in the transition towards a sustainable energy supply system, to cover a significant share of the electricity needs, and is expected to be one of the key energy technologies of this century. This paper presents a grid-connected photovoltaic (PV) system with the functionality of on-line Maximum Power Point Tracking (MPPT). The integration topology is based on two-stage power conditioning modules, boost converter and three phase voltage source inverter. Therefore, the proposed MPPT algorithm is implemented to the boost converter to enable PV arrays to operate at maximum power point during variable climate and irradiation conditions. Fuzzy logic algorithm (MPPT) technique control is applied for on-line adapting the boost converter duty cycle. The Boost output is feeding the two level PWM inverter DC link. Adoringly, the Inverter modulation depth is tuned to have constant AC voltage and frequency for grid integration requirements. In addition, the three-phase output in phase with the voltage to optimize the PV power utilization .The results show that proposed on-line fuzzy algorithm performance has a fast response, stable and reliable to have MPP for the PV system during the different irradiation.

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A Single-Stage Three-Phase Grid-Connected Photovoltaic System With Modified MPPT Method and Reactive Power Compensation

Cited by 364 publications

References 14 publications

Enhancement of Grid Connected PV Inverter using Optimal Maximum Power Point Tracking Algorithm with Climatic Parameters Estimation

Enhancement of Grid Connected PV Inverter using Optimal Maximum Power Point Tracking Algorithm with Climatic Parameters Estimation

Comparative study of reactive power control methods for photovoltaic inverters in low‐voltage grids

On-Line Maximum Power Point Tracking for Photovoltaic System Grid Connected Through DC-DC Boost Converter and Three Phase Inverter

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