scholarly journals COMPARATIVE ANALYSIS OF FIVE LEVEL MULTILEVEL CURRENT SOURCE INVERTER AND BRIDGE CONFIGURED CURRENT SOURCE INVERTER FOR PV SYSTEM

2016 ◽  
Vol 3 (07) ◽  
Keyword(s):  
Comparative Analysis ◽  
Current Source ◽  
Pv System ◽  
Current Source Inverter

Distributed MPPT PV system with current source inverter

2015 ◽  
Author(s):  
Toru Sai ◽  
Akira Kitamura ◽  
Byung-Gyu Yu ◽  
Xiang-Dong Sun ◽  
Mikihiko Matsui
Keyword(s):  
Current Source ◽  
Pv System ◽  
Current Source Inverter

scholarly journals A Transformerless Single-Phase Current Source Inverter Topology and Control for Photovoltaic Applications

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2011 ◽  
Author(s):  
Jorge Cardoso ◽  
Nimrod Vazquez ◽  
Claudia Hernandez ◽  
Joaquin Vaquero
Keyword(s):  
Low Power ◽  
Leakage Current ◽  
Single Phase ◽  
Low Voltage ◽  
Neutral Line ◽  
Current Source ◽  
Total Efficiency ◽  
Pv System ◽  
Phase Current ◽  
Current Source Inverter

Low power grid-tied photovoltaic (PV) generation systems increasingly use transformerless inverters. The elimination of the transformer allows smaller, lighter and cheaper systems, and improves the total efficiency. However, a leakage current may appear, flowing from the grid to the PV panels through the existing parasitic capacitance between them, since there is no galvanic isolation. As a result, electromagnetic interferences and security issues arise. This paper presents a novel transformerless single-phase Current Source Inverter (CSI) topology with a reduced inductor, compared to conventional CSIs. This topology directly connects the neutral line of the grid to the negative terminal of the PV system, referred as common mode configuration, eliminating this way, theoretically, the possibility of any leakage current through this terminal. The switches control is based on a hysteresis current controller together with a combinational logic circuitry and it is implemented in a digital platform based on National Instruments Technology. Results that validate the proposal, based on both simulations and tests of a low voltage low power prototype, are presented.

scholarly journals Direct Power Control of a Single Stage Current Source Inverter Grid-Tied PV System

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3165
Author(s):  
Erhab Youssef ◽  
Pedro B. C. Costa ◽  
Sonia F. Pinto ◽  
Amr Amin ◽  
Adel A. El Samahy
Keyword(s):  
Power Control ◽  
Reactive Power ◽  
Current Source ◽  
Harmonic Distortion ◽  
Time Instant ◽  
Single Stage ◽  
Direct Power ◽  
Pv System ◽  
Current Source Inverter ◽  
Active And Reactive Power

In this paper, a direct power predictive controller (DPPC) is derived for a current source inverter (CSI) based single stage photovoltaic (PV) system. The equations of the dynamics, including AC and DC filters, are formulated directly for the PV power and for the active and reactive power injected in the grid. Then, the prediction equations are synthesized straight for the power, and, at each time instant, the optimal switching vector that guarantees simultaneously the control of the power generated by the PV arrays, and the control of the reactive power in the connection to the grid is chosen. This approach aims to guarantee fast and accurate tracking of the power. The proposed system is then validated through simulation and experimental results, showing that the PV system is able to follow the power references, guaranteeing a fast response to a step in the power, and decoupled active and reactive power control, with minimum total harmonic distortion (<5%) of the currents injected in the grid.

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