scholarly journals Single-Phase Current Source Inverter with Reduced Ground Leakage Current for Photovoltaic Applications

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1618
Author(s):  
Giovanni Migliazza ◽  
Emilio Lorenzani ◽  
Fabio Immovilli ◽  
Giampaolo Buticchi
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
High Reliability ◽  
Current Source ◽  
Phase Current ◽  
Current Source Inverter ◽  
Point Tracking ◽  
Photovoltaic Application ◽  
Photovoltaic Applications ◽  
Current Reduction

Integrated power electronics for photovoltaic applications has attracted increasing interest, due to the possibility of having grid-connected photovoltaic modules with independent maximum power point tracking and high reliability. In this paper, a single-phase Current Source Inverter (CSI) is discussed for a photovoltaic application. The basic CSI topology will be explained for the sake of completeness, highlighting its main features and analyzing the ground leakage current problem, an important benchmark for photovoltaic application. A novel topology, called CSI5, is proposed in this work. The main feature is the presence of additional switches for ground leakage current reduction. The performance of the proposed topology is assessed by numerical simulation, and the experimental results confirm that this solution is able to strongly reduce the ground leakage current and conduction power losses.

scholarly journals A New Single-Phase Transformerless Current Source Inverter for Leakage Current Reduction

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1633 ◽  
Author(s):  
Xiaoqiang Guo ◽  
Jianhua Zhang ◽  
Jiale Zhou ◽  
Baocheng Wang
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
Current Source ◽  
Current Source Inverter ◽  
Current Reduction

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.

Sliding control applied to a single-phase current source inverter

2021 ◽  
Author(s):  
Marycarmen Rivera Montezuma ◽  
Enric Fossas Colet ◽  
Fabiola Angulo
Keyword(s):  
Single Phase ◽  
Current Source ◽  
Sliding Control ◽  
Phase Current ◽  
Current Source Inverter

scholarly journals A Novel Transformerless Current Source Inverter for Leakage Current Reduction

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 50681-50690 ◽  
Author(s):  
Xiaoqiang Guo ◽  
Na Wang ◽  
Jianhua Zhang ◽  
Baocheng Wang ◽  
Minh-Khai Nguyen
Keyword(s):  
Leakage Current ◽  
Current Source ◽  
Current Source Inverter ◽  
Current Reduction

CSI7: A Modified Three-Phase Current-Source Inverter for Modular Photovoltaic Applications

2017 ◽  
Vol 64 (7) ◽  
pp. 5449-5459 ◽  
Author(s):  
Emilio Lorenzani ◽  
Fabio Immovilli ◽  
Giovanni Migliazza ◽  
Matteo Frigieri ◽  
Claudio Bianchini ◽  
...  
Keyword(s):  
Current Source ◽  
Phase Current ◽  
Current Source Inverter ◽  
Three Phase ◽  
Photovoltaic Applications

scholarly journals IMPLEMENTATION OF IMPEDANCE SOURCE INVERTER SYSTEM FOR PHOTOVOLTAIC APPLICATIONS

2013 ◽  
pp. 211-215
Author(s):  
NISHA K.C. R ◽  
T.N. BASAVARAJ
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Power Conversion ◽  
Current Source ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Energy Applications ◽  
Current Source Inverter ◽  
Photovoltaic Application ◽  
Photovoltaic Applications

This paper presents a high performance, low cost inverter for photovoltaic systems based on Impedance-source concept. Traditional Voltage-source inverter and Current-source inverter has improved to the new Z-source inverter, with a unique X-shaped network in it. This Impedance-source inverter can provide a single stage power conversion concept where as the traditional inverter requires two stage power conversion for renewable energy applications. A new low cost solar cell powered Z-source inverter system is simulated and the results are compared with the traditional Voltage-source inverter system. Performance analysis, simulation and comparison have been confirmed that the Z-source inverter system is more appropriate for photovoltaic application than their counterparts. Hardware implementation is done to validate the proposed system.

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