Modeling and control of a cascaded NPC/H-Bridge inverter with LCL filter in PV- Grid application

2010 ◽  
Author(s):  
T. Wanjekeche ◽  
D.V. Nicolae ◽  
A.A. Jimoh
Keyword(s):  
Lcl Filter ◽  
Modeling And Control ◽  
Grid Application ◽  
And Control ◽  
Pv Grid

Modeling and Control of a Single-Phase Grid-Connected Inverter with LCL Filter

2021 ◽  
Vol 19 (02) ◽  
pp. 250-259
Author(s):  
Jakson Paulo Bonaldo ◽  
Jose de Arimateia Olimpio Filho ◽  
Augusto Matheus dos Santos Alonso ◽  
Helmo Kelis Morales Paredes ◽  
Fernando Pinhabel Marafao
Keyword(s):  
Single Phase ◽  
Lcl Filter ◽  
Modeling And Control ◽  
Grid Connected Inverter ◽  
And Control

A review on modeling and control of grid-connected photovoltaic inverters with LCL filter

2018 ◽  
Vol 81 ◽  
pp. 563-578 ◽  
Author(s):  
Mohammad Hossein Mahlooji ◽  
Hamid Reza Mohammadi ◽  
Mohsen Rahimi
Keyword(s):  
Lcl Filter ◽  
Modeling And Control ◽  
And Control

Modeling and Control Technology of the Z-Source Inverter PV Grid-Connected System in the New Energy Equipment

2013 ◽  
Vol 724-725 ◽  
pp. 110-115
Author(s):  
Xiao Li Xu ◽  
Ling Xia Meng ◽  
Qiu Shuang Liu ◽  
Xi Bin Wang
Keyword(s):  
Control System ◽  
Tracking Control ◽  
Experimental System ◽  
Current Waveform ◽  
Modeling And Control ◽  
New Energy ◽  
And Control ◽  
Pv Grid ◽  
Zero Vector ◽  
Energy Equipment

Z-source inverter is the key part of the new energy equipment. A model of Z-source inverter has been built by using the State Space Average Overall Modeling method. It can achieve the linkage control of the direct zero vector d and modulation factor m. According to the model, a control system adopted MPPT tracking control and voltage & current double loop grid-connected control is designed to realize the coordinated control. SHEPWM modulation strategy is used to ensure that the grid current waveform quality. Z-source photovoltaic grid-connected experimental system has been designed and carried out, and the experimental results verify the validity and correctness of the control system.

Research on Modeling and Control Strategy for Two-Stage Photovoltaic Grid-Connected System

2014 ◽  
Vol 1008-1009 ◽  
pp. 16-21
Author(s):  
Xia Dong ◽  
Li Na Zhang ◽  
Yu Ying Fu ◽  
Cui Lian Ji
Keyword(s):  
Control Strategy ◽  
High Performance ◽  
Dynamic Performance ◽  
Mathematic Model ◽  
Two Stage ◽  
Lcl Filter ◽  
Modeling And Control ◽  
Point Tracking ◽  
Power Point ◽  
And Control

This paper has built the mathematic model of the single-phase two-stage photovoltaic(PV) grid-connected system. The model consists of a boost DC/DC converter and a DC/AC inverter with LCL filter. On the basis of the variable step perturbation and observation method(P&O), the boost converter changes the output voltage of the PV array by adjusting the duty cycle to realize the PV maximum power point tracking(MPPT). The inverter system restrains the voltage fluctuation effectively by using feed-forward of the grid voltage and current tracking control technology, which has the high performance in both sinusoidal reference tracking and disturbance rejection. LCL filter improves the dynamic performance and restrains the high harmonics efficiently. The simulation with Matlab soft confirms the effectiveness of the model and control strategy.

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