scholarly journals REACTIVE POWER CONTROL OF THREE-PHASE MODULE INTEGRATED PV MICRO-INVERTER BASED ON BOOST CONVERTER

2021 ◽  
Vol 25 (Special) ◽  
pp. 1-81-1-94
Author(s):  
Farah T. Noori ◽  
◽  
Turki K. Hassn ◽  
Keyword(s):  
Power Generation ◽  
Power Systems ◽  
Reactive Power ◽  
Boost Converter ◽  
Voltage Source ◽  
Pv System ◽  
Three Phase ◽  
In Series ◽  
Power Point ◽  
Micro Inverter

In recent years, photovoltaic power generation has become a creative technology. This technology uses solar energy to overcome the energy shortages in modern power systems because of increasing environmental problems in traditional power generation systems. It has irreplaceable benefits like pollution reduction and has increasingly been turned into a new path for distributing power generation applications. In traditional PV system design to produced enough DC-bus voltage from PV panels, several PV modules are connected in series connection. However, when certain modules are partially shadowed, the overall power generation of the PV panels often falls significantly, reducing its essential current generation and preventing the output current from reaching its maximum value within that panels. An AC modules strategy was suggested in this paper to solve this drawback. The PV system with an interleaved DC-DC boost converter and maximum power point tracker (MPPT) for each boost converter is used in the DC-DC converter stage. The perturbation and observation (P&O) algorithm is applied to extract sun power. In this paper, a three-phase micro-inverter voltage source inverter type (VSI) of 1000W is designed and simulated. By controlling the direct and quadrature components of inverter output currents, the active and reactive power can be injected into the grid. The system is simulated using MATLAB software and the simulation results show the validity of the suggested Micro-inverter system.

scholarly journals ICM based ANFIS MPPT controller for grid connected photovoltaic system

2018 ◽  
Vol 7 (3) ◽  
pp. 1508 ◽  
Author(s):  
R Pavan Kumar Naidu ◽  
S Meikandasivam
Keyword(s):  
Boost Converter ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Photovoltaic Module ◽  
Voltage Source Inverter ◽  
Pv System ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Conductance Method ◽  
Power Point

In this paper, grid-connected photovoltaic (PV) system is presented. PV system consists of a photovoltaic module, a boost converter, and voltage source inverter. ANFIS based ICM (Incremental Conductance Method) MPPT (Maximum Power Point Tracking) controller is utilized to produce gate signal for DC-DC boost converter. This controller is used for optimizing the total performance of the Photovoltaic system in turn the errors were reduced in Voltage Source Inverter (VSI). The grid-connected PV system performance is evaluated and har-monics occurred in the system are decreased. The proposed methodology is implemented in MATLAB/Simulink. 

Daily Constant PV Output Power Supplying AC pumps using Batteries

2016 ◽  
Vol 2 (2) ◽  
pp. 275
Author(s):  
Mohamed Mahmoud Ismail
Keyword(s):  
Output Power ◽  
Boost Converter ◽  
Operating Conditions ◽  
Voltage Source ◽  
Maximum Power Point ◽  
Pv Array ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point

This paper presents 200 KW three phase standalone photovoltaic systems supplying pumping station consist of four pumps 40 KW rating. The system utilizes a two stage energy conversion power conditioning unit topology composed of a DC-DC boost converter and three level-three phase voltage source inverter (VSI). The Boost converter in this paper is designed to operate in continuous mode and controlled for maximum power point tracking (MPPT). The fluctuating output power of the PV array system during the day is the commonly problem in the power system.  In this paper a nickel-Cadmium battery will be used to maintain the output power generated from the PV array supplying the pumps to be constant all the day under different operating conditions. The system is modeled and studied using MATLAB/Simulink

Unified Power Quality Conditioner Using Injection Capacitors for Voltage Sag Compensation

2017 ◽  
Vol 6 (1) ◽  
pp. 36
Author(s):  
Madhusmita Patro ◽  
Kanhu Charan Bhuyan
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Power Factor ◽  
Supply Voltage ◽  
Voltage Source ◽  
Distortion Compensation ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
In Series ◽  
Power Quality Conditioner

<p>Power quality has become an important factor in power systems, for consumer and household appliances. The main causes of poor power quality are harmonic currents, poor power factor, supply voltage variations etc. A technique of achieving both active current distortion compensation, power factor correction and also mitigating the supply voltage variations at load side is compensated by unique device UPQC presented in this thesis. This concept presents a multi loop based controller to compensate power quality problems through a three phase four wire unified power quality conditioner (UPQC) under unbalanced and distorted load conditions. Here the UPQC is constituted of two voltage source converters (VSC) connected via power link. The series compensator is connected to the line in series and injects the voltage and thus compensates for voltage issues; whereas the shunt compensator injects current thus compensating for current issues, and is connected in shunt to the line. The voltage injection to the line uses an injecting transformer. The injection transformer is later replaced with injection capacitors, thus eliminating the drawback of conventional UPQC. In this way a good power quality is maintained.</p>

Unified Power Quality Conditioner Using Injection Capacitors for Voltage Sag Compensation

2017 ◽  
Vol 6 (1) ◽  
pp. 35
Author(s):  
Madhusmita Patro ◽  
Kanhu Charan Bhuyan
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Power Factor ◽  
Supply Voltage ◽  
Voltage Source ◽  
Distortion Compensation ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
In Series ◽  
Power Quality Conditioner

<p>Power quality has become an important factor in power systems, for consumer and household appliances. The main causes of poor power quality are har ue of achieving active current distortion compensation, power factor monic currents, poor power factor, supply voltage variations etc. A techniq correction and also mitigating the supply voltage variations at load side is compensated by unique device UPQC presented in this thesis. This concept presents a multi loop based controller to compensate power quality problems through a three phase four wire Unified Power Quality Conditioner (UPQC) under unbalanced and distorted load conditions. Here the UPQC is constituted of two Voltage Source Converters (VSC) connected via power link. The series compensator is connected to the line in series and injects the voltage and thus compensates for voltage issues; whereas the shunt compensator injects current thus compensating for current issues, and is connected in shunt to the line. The voltage injection to the line uses an ijecting transformer. The injection transformer is later replaced with injection capacitors, thus eliminating the drawback of conventional UPQC. In this way a good power quality is maintained</p>

THREE-PHASE FOUR-WIRE PV-BASED SERIES HYBRID ACTIVE POWER FILTER FOR POWER QUALITY IMPROVEMENT

2014 ◽  
Vol 23 (10) ◽  
pp. 1450144 ◽  
Author(s):  
M. VIJAYAKUMAR ◽  
S. VIJAYAN
Keyword(s):  
Reactive Power ◽  
Experimental Studies ◽  
Active Power Filter ◽  
Boost Converter ◽  
Active Power ◽  
Solar Irradiation ◽  
Voltage Source ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Three Phase

This paper proposes a photovoltaic (PV)-based three-phase four-wire (3P4W) series hybrid active power filter (SHAPF) it comprises of a series active power filter (SAPF) and an LC shunt passive filter. The proposed system eliminates both the current and voltage harmonics and compensates reactive power, neutral current and voltage interruption. A SAPF demands a source of energy for compensating the voltage sag/swell. This system introduces a new topology for SHAPF utilizes the PV with DC–DC boost converter as a source of DC power for SAPF. The compensation current reference evaluation is based on the twin formulation of the vectorial theory of electrical power theorem with fuzzy logic controller (FLC). The PV array/battery managed DC–DC boost converter is employed to step up the voltage to meet the DC bus voltage requirement of the three-leg voltage source inverter (VSI). The foremost benefit of the proposed system is that, it will provide uninterrupted compensation for the whole day. This system utilizes the renewable energy accordingly saves the energy and shares the load during the solar irradiation available. The simulation and experimental studies are carried out to validate the effectiveness of the proposed PV-SHAPF.

Modeling and Simulation of Three Phase Grid Connected Solar PV System

2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Pradeep Rai ◽  
Roshan Nayak
Keyword(s):  
Voltage Source ◽  
Solar Pv ◽  
Pv System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Solar Pv System ◽  
Power Point ◽  
Control Methodology

This paper proposes a nonlinear control methodology for three phase grid connected of PV generator. It consists of a PV arrays; a voltage source inverter, a grid filter and an electric grid. The controller objectives are threefold: i) ensuring the Maximum power point tracking (MPPT) in the side of PV panels, ii) guaranteeing a power factor unit in the side of the grid, iii) ensuring the global asymptotic stability of the closed loop system. Based on the nonlinear model of the whole system, the controller is carried out using a Lyapunov approach. It is formally shown, using a theoretical stability analysis and simulation results that the proposed controller meets all the objectives.

scholarly journals Multistep Finite Control Set Model Predictive Control of Photovoltaic Power Generation System with Harmonic Compensation

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xuejiao Gong ◽  
Shifeng Hu ◽  
Ruijin Zhu
Keyword(s):  
Power Generation ◽  
Reactive Power ◽  
Power Grid ◽  
Dynamic Performance ◽  
Maximum Power ◽  
Pv System ◽  
Nonlinear Load ◽  
Harmonic Compensation ◽  
Power Point ◽  
Pv Power Generation

Photovoltaic (PV) power generation is the main aspect of new energy power generation, and it is an important means to achieve the goal of carbon neutrality. When the PV system is connected to the grid, the nonlinear load of the grid will affect the power quality and consume reactive power. This paper proposes a PV power generation grid-connected system to improve power quality, with an active power filter (APF) function. Through the maximum power point tracking (MPPT) method, PV power generation can operate at the maximum power point and play the function of harmonic and reactive power compensation at the load side. To improve the dynamic performance of the grid-connected PV system and harmonic compensation simultaneously, multistep finite control set model predictive control (FCS-MPC) is adopted for the grid-connected module. The whole system does not need additional equipment, as it plays the role of two devices and effectively reduces the input cost. In this paper, the proposed structure and multistep FCS-MPC are verified in MATLAB/Simulink. The results show that the system injects the maximum power into the power grid at the same time when the load changes and compensates the harmonic generated by the nonlinear load of the power grid so that the total harmonic distortion of the power grid can meet the operation standard, and the system has good dynamic performance and steady-state performance.

scholarly journals National Grid Connected 3-Phase Inverter based on Photovoltaic Solar System

2020 ◽  
Vol 26 (12) ◽  
pp. 21-43
Author(s):  
Karam Abdulwahed Kashan ◽  
Fadhil Abbas Al-Qrimli
Keyword(s):  
Reference Frame ◽  
Reactive Power ◽  
Maximum Power ◽  
Voltage Source ◽  
Duty Ratio ◽  
Power Fluctuation ◽  
Pv System ◽  
Maximum Power Point ◽  
Power Point ◽  
Lc Filter

In this paper, a national grid-connected photovoltaic (PV) system is proposed. It extracts the maximum power point (MPP) using three-incremental-steps perturb and observe (TISP&O) maximum power point tracking (MPPT) method. It improves the classic P&O by using three incremental duty ratio (ΔD) instead of a single one in the conventional P and O MPPT method. Therefore, the system's performance is improved to a higher speed and less power fluctuation around the MPP. The Boost converter controls the MPPT and then is connected to a three-phase voltage source inverter (VSI). This type of inverter needs a high and constant input voltage. A second-order low pass (LC) filter is connected to the output of VSI to reduce the total harmonic distortion (THD) of the output current. The LC filter is then connected to a step-up transformer to push up the low VSI output voltage to the high grid voltage level. The control strategy is based on the rotating reference frame (dq reference frame) and the grid phase shift angle extracted using a phase-locked loop (PLL) technique. The designed PV system supplies only active power with zero reactive power to the utility grid. The system is simulated using MATLAB / Simulink software.  

FOPID Controller Based AC Pump Supplied from PV Standalone Source Tuned using Fuzzy Logic Type 2

2016 ◽  
Vol 4 (1) ◽  
pp. 10 ◽  
Author(s):  
Mohamed Mahmoud Ismail ◽  
Ahmed Fahmy Bendary
Keyword(s):  
Boost Converter ◽  
Voltage Source ◽  
Phase Voltage ◽  
Power Conditioning ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point

This paper presents 500 KW three phase standalone photovoltaic systems supplying pumping station consist of four pumps 80 KW rating. The system utilizes a two stage energy conversion power conditioning unit topology composed of a DC-DC boost converter and three level-three phase voltage source inverter (VSI). The Boost converter in this paper is designed to operate in continuous mode and controlled for maximum power point tracking (MPPT). In this paper, the performance of the pumps is improved by adapting the controller of MPPT using different techniques. The system is modeled and studied using MATLAB/Simulink.

scholarly journals A Control Strategy for a Three-Phase Grid Connected PV System under Grid Faults

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 906 ◽  
Author(s):  
Khawla ◽  
Chariag ◽  
Sbita
Keyword(s):  
Control Strategy ◽  
Low Voltage ◽  
Operating Mode ◽  
Boost Converter ◽  
Voltage Source ◽  
Voltage Sag ◽  
Pv System ◽  
Power Extraction ◽  
Point Tracking ◽  
Three Phase

This paper proposes a Low-Voltage Ride-Through control strategy for a three-phase grid-connected photovoltaic (PV) system. At two stages, the topology is considered for the grid-tied system fed by a photovoltaic generator with a boost converter followed by a three-phase voltage source inverter. A flexible control strategy is built for the proposed system. It accomplishes the PV converter operations under the normal operating mode and under grid faults (symmetrical and asymmetrical grid voltage sag). The boost converter is controlled via an incremental conductance maximum power point tracking technique to maximize the PV generator power extraction. In the case of voltage sag, the implemented control strategy provides a switch between MPPT mode and non-MPPT mode to ensure the protection of the power converters. Theoretical modeling and simulation studies were performed, and significant results are extracted and presented to prove the effectiveness of the proposed control algorithm.

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