Two-stage grid-connected inverter for PV systems

2018 ◽  
Author(s):  
Necmi Altin ◽  
Saban Ozdemir ◽  
Hasan Komurcugil ◽  
Ibrahim Sefa ◽  
Samet Biricik
Keyword(s):  
Two Stage ◽  
Pv Systems ◽  
Grid Connected Inverter

scholarly journals An Optimized PV Control System Based on the Emperor Penguin Optimizer

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 751
Author(s):  
Mariam A. Sameh ◽  
Mostafa I. Marei ◽  
M. A. Badr ◽  
Mahmoud A. Attia
Keyword(s):  
Duty Cycle ◽  
Optimization Technique ◽  
Pso Algorithm ◽  
Boost Converter ◽  
Emperor Penguin ◽  
Pv System ◽  
Partial Shading ◽  
Pv Systems ◽  
Point Tracking ◽  
Grid Connected Inverter

During the day, photovoltaic (PV) systems are exposed to different sunlight conditions in addition to partial shading (PS). Accordingly, maximum power point tracking (MPPT) techniques have become essential for PV systems to secure harvesting the maximum possible power from the PV modules. In this paper, optimized control is performed through the application of relatively newly developed optimization algorithms to PV systems under Partial Shading (PS) conditions. The initial value of the duty cycle of the boost converter is optimized for maximizing the amount of power extracted from the PV arrays. The emperor penguin optimizer (EPO) is proposed not only to optimize the initial setting of duty cycle but to tune the gains of controllers used for the boost converter and the grid-connected inverter of the PV system. In addition, the performance of the proposed system based on the EPO algorithm is compared with another newly developed optimization technique based on the cuttlefish algorithm (CFA). Moreover, particle swarm optimization (PSO) algorithm is used as a reference algorithm to compare results with both EPO and CFA. PSO is chosen since it is an old, well-tested, and effective algorithm. For the evaluation of performance of the proposed PV system using the proposed algorithms under different PS conditions, results are recorded and introduced.

Single-Phase Two-Stage Transformerless Grid-Connected Inverter For Photovoltaic Applications

2021 ◽  
Author(s):  
Naser Vosoughi Kurdkandi ◽  
Milad Ghavipanjeh Marangalu ◽  
Tala Hemmati ◽  
Seyed Hossein Hosseini ◽  
Oleksandr Husev ◽  
...  
Keyword(s):  
Single Phase ◽  
Two Stage ◽  
Photovoltaic Applications ◽  
Grid Connected Inverter

scholarly journals A Sensorless Power Reserve Control Strategy for Two-Stage Grid-Connected PV Systems

2017 ◽  
Vol 32 (11) ◽  
pp. 8559-8569 ◽  
Author(s):  
Ariya Sangwongwanich ◽  
Yongheng Yang ◽  
Frede Blaabjerg
Keyword(s):  
Control Strategy ◽  
Two Stage ◽  
Pv Systems

scholarly journals Applying Kalman filter on sensor noise cancelation in grid – connected inverter

2015 ◽  
Vol 18 (3) ◽  
pp. 192-198
Author(s):  
Huy Minh Nguyen ◽  
Phuong Minh Le ◽  
Phuong Thanh Ho
Keyword(s):  
Kalman Filter ◽  
Control Strategy ◽  
Electrical Power ◽  
Control Model ◽  
Two Stage ◽  
Three Phase ◽  
Grid Connected Inverter ◽  
Set Up ◽  
The Mathematical Model

This paper presents the control model of three phase grid- connected photovoltaic inverter based on the analysis of operating principle of two-stage conventional gridconnected inverter. The mathematical model of inverter under dq frame is set up and the overall control strategy of two-stage photovoltaic grid-connected inverter is proposed in this paper. To overcome the distortion general caused by switching effect on sensors, a Kalman filter is introduced. The control strategy was simulated on Matlab – Simulink to verify the steady and dynamic of model, improving the quality of electrical power to consumers.

scholarly journals Development and implementation of two-stage boost converter for single-phase inverter without transformer for PV systems

2020 ◽  
Vol 10 (1) ◽  
pp. 660
Author(s):  
Basem E. Elnaghi ◽  
Mohamed E. Dessouki ◽  
M. N. Abd-Alwahab ◽  
Elwy E. Elkholy
Keyword(s):  
Pulse Width ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Sine Wave ◽  
Boost Converter ◽  
Innovative Technology ◽  
Two Stage ◽  
Phase Inverter ◽  
Pv Systems ◽  
Single Phase Inverter

This paper offers a two-stage boost converter for a single-phase inverter without transformer for PV systems. Each stage of the converter is separately controlled by a pulse width modulated signal. A Simulink model of the converter using efficient voltage control topology is developed. The proposed circuit performance characteristics are explained and the obtained simulation results are confirmed through the applied experiments. Moreover, this paper has examined the control circuit of a single-phase inverter that delivers a pure sine wave with an output voltage that has the identical value and frequency as a grid voltage. A microcontroller supported an innovative technology is utilized to come up with a sine wave with fewer harmonics, much less price and an easier outline. A sinusoidal pulse width modulation (SPWM) technique is used by a microcontroller. The developed inverter integrated with the two-stage boost converter has improved the output waveform quality and controlled the dead time as it decreased to 63 µs compared to 180 µs in conventional methods. The system design is reproduced in Proteus and PSIM Software to analyze its operation principle that is confirmed practically.

Flexible Power Regulation of Grid-Connected Inverters for PV Systems Using Model Predictive Direct Power Control

2016 ◽  
Vol 4 (3) ◽  
pp. 508 ◽  
Author(s):  
R S Ravi Sankar ◽  
S.V. Jayaram Kumar ◽  
K. K. Deepika
Keyword(s):  
Power Control ◽  
Sampling Period ◽  
Photovoltaic System ◽  
Direct Power ◽  
Direct Power Control ◽  
Pv Systems ◽  
Voltage Vector ◽  
Power Regulation ◽  
Grid Connected Inverter ◽  
Sampling Instant

<p>This paper presents a Model Predictive Direct Power Control (MPDPC) strategy for a grid-connected inverter used in a photovoltaic system, as found in many distributed generating installations. The controller uses a system model to predict the system behavior at each sampling instant. Using a cost function, the voltage vector with least power ripple is generated. The resultant voltage vector is applied during the next sampling period which gives flexible power regulation. The effectiveness of the proposed MPDPC strategy is verified using MATLAB/ SIMULINK. </p>

Research on Two-Stage Three-Phase Photovoltaic Grid-Connected System

2012 ◽  
Vol 535-537 ◽  
pp. 1247-1251
Author(s):  
Xiao Jie Zhou ◽  
Yi Ruan
Keyword(s):  
Vector Control ◽  
Control Strategy ◽  
Common Point ◽  
Theoretic Analysis ◽  
Two Stage ◽  
Pv Systems ◽  
Current Vector ◽  
Three Phase ◽  
Pi Controllers ◽  
The Common

Nowadays the penetration of PV-generated power energy into the utility grid is increasing exponentially. This paper focuses on two-stage three-phase grid-connected PV systems, which includes modeling of three-phase grid-connected PV systems, grid-connected control strategy of inverter. The inverter based on the grid-voltage oriented vector control used SVPWM-based synchronous current vector PI controllers to control the grid-current of the common point in three-phase grid-connected system. Theoretic analysis and experimental results on a 2.5KW prototype verify the presented algorithm.

scholarly journals A Control Strategy for Two-stage PV Grid-connected Inverter Based on Voltage Oriented Control

2020 ◽  
Vol 740 ◽  
pp. 012079
Author(s):  
Yiyan Zhang ◽  
Xiaobo Tang ◽  
Zhongyu Shen ◽  
Xiao Chen ◽  
Yulong Feng ◽  
...  
Keyword(s):  
Control Strategy ◽  
Two Stage ◽  
Grid Connected Inverter ◽  
Pv Grid
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