Smart Control Strategy for Small-Scale Photovoltaic Systems Connected to Single-Phase Grids

2016 ◽  
pp. 380-404 ◽  
Author(s):  
Imene Yahyaoui ◽  
Fernando Tadeo ◽  
Marcelo Eduardo Vieira Segatto
Keyword(s):  
Solar Radiation ◽  
Control Strategy ◽  
Single Phase ◽  
Small Scale ◽  
Maximum Power Point ◽  
Phase Inverter ◽  
Radiation Change ◽  
Smart Control ◽  
Single Phase Inverter ◽  
Power Point

This research chapter is concerned with the control of a photovoltaic powered plant connected to a single-phase grid. The system is equipped with dc–dc converters, which allow the panels' maximum power point to be tracked, and the voltage at their terminals to be regulated. Power is injected into the grid using an adequate control of a single-phase inverter connected to a filter and loads. In this research chapter, the active and reactive powers are controlled using the Voltage Oriented Control strategy, taking into account the grid and the loads characteristics. The control strategy is tested by simulation, and the obtained results prove its performance even under solar radiation change.

scholarly journals Design & Simulation of Transformerless Power Convertors for Solar Application

2018 ◽  
Vol 3 (1) ◽  
pp. 27-32
Author(s):  
Soumya Sourav ◽  
◽  
Vikas Sharma ◽  
Vinayak Nadir ◽  
Siddharth Verma ◽  
...  
Keyword(s):  
Single Phase ◽  
Power Converters ◽  
Maximum Power Point ◽  
Phase Inverter ◽  
Power Extraction ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Single Phase Inverter ◽  
Power Point ◽  
Solar Application

This paper presents simulation and design results for Transformerless Power Converters which are to be used in conjunction with a PV array for solar applications. The set of converters consists of a boost converter as well as a single-phase inverter for conversion of DC supply from the array to a usable AC voltage. The power extraction from the array is done by using the Maximum Power Point Tracking (MPPT) algorithm. Simulation is done on Proteus and PSIM.

Separated-PI Control Strategy and Stability Analysis of a Single-Phase Inverter Connected to the Grid with a LCL Filter

2013 ◽  
Vol 291-294 ◽  
pp. 2464-2469
Author(s):  
Dian Li Hou ◽  
Qing Fan Zhang ◽  
Xiao Liu
Keyword(s):  
Control Strategy ◽  
Single Phase ◽  
Dynamic Performance ◽  
Structural Features ◽  
Lcl Filter ◽  
Phase Inverter ◽  
Hurwitz Stability ◽  
Single Phase Inverter ◽  
Grid Connected Inverter ◽  
The Stability

Because of the powerful filtering ability the third-order LCL filters has been widely used in grid-connected inverters, but there are some problems to be solved on systems stability and control accuracy. A separated-PID control strategy has been proposed according to the PID characteristics and the structural features of a single-phase inverter connected to the grid with a LCL filter. This control strategy has some advantages as a strong dynamic tacking stability, and the system output has a small steady state error. A detailed description is presented on this control strategy applied in the single-phase grid inverter with a LCL filter. According to the Routh-Hurwitz stability criterion, the stability of a grid-connected inverter system based on the proposed control strategy has been analyzed. Finally, waveforms of this inverter have been presented through a simulation to show the steady and dynamic performance of the proposed scheme.

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