The Impact of PV Panel Positioning and Degradation on the PV Inverter Lifetime and Reliability

2020 ◽  
pp. 1-1 ◽  
Author(s):  
Sara Bouguerra ◽  
Mohamed Redha Yaiche ◽  
Oussama Gassab ◽  
Ariya Sangwongwanich ◽  
Frede Blaabjerg
Keyword(s):  
Pv Inverter ◽  
Pv Panel ◽  
The Impact

A design tool to study the impact of mission-profile on the reliability of SiC-based PV-inverter devices

2014 ◽  
Vol 54 (9-10) ◽  
pp. 1655-1660 ◽  
Author(s):  
N.C. Sintamarean ◽  
H. Wang ◽  
F. Blaabjerg ◽  
P.de P. Rimmen
Keyword(s):  
Design Tool ◽  
Pv Inverter ◽  
The Impact ◽  
Mission Profile

Comparative Analysis of Grid Connected Photovoltaic Based Z-Source Inverter with PI and PID Controllers

2017 ◽  
Vol 14 (1) ◽  
pp. 577-584
Author(s):  
S Kamalakkannan ◽  
D Kirubakaran
Keyword(s):  
Comparative Analysis ◽  
Pid Controllers ◽  
Grid System ◽  
Pv System ◽  
Matlab Simulink ◽  
Pv Inverter ◽  
Pv Panel ◽  
Time Period ◽  
Ac Current ◽  
Simulation Results

In this work, a grid system attached Z-Source inverters for PV system with perturb and observation algorithm is projected for changing irradiance and to use full obtainable PV power. The boost operation of PV power is attained in inverter using the perception of shoot-through time period. The PV inverter is an important component in a PV system. It executes the conversion of variable DC output of the PV panel module(s) in to pure sinusoidal 50Hz AC current. This pure sinusoidal AC in turn is fed to the grid connected system. The simulation is carried out in Matlab/Simulink platform and benefits of projected systems are emphasised with the aid of simulation results.

scholarly journals Common mode behavior in grid connected DC and AC decoupled PV Inverter topologies

2016 ◽  
Vol 65 (3) ◽  
pp. 481-493 ◽  
Author(s):  
D. John Sundar ◽  
M. Senthil Kumaran
Keyword(s):  
Leakage Current ◽  
High Efficiency ◽  
Economic Feasibility ◽  
Photovoltaic Systems ◽  
Common Mode ◽  
Pv Inverter ◽  
Mode Behavior ◽  
The Common ◽  
Utility Grid ◽  
The Impact

Abstract The transformer-less grid connected inverters are gaining more popularity due to their high efficiency, very low ground leakage current and economic feasibility especially in photovoltaic systems. The major issue which surfaces these systems is that of common mode leakage current which arises due to the absence of an electrical transformer connected between the inverter and the utility grid. Several topologies have evolved to reduce the impact of common mode leakage current and a majority of them have succeeded in eliminating the impacts and have well kept them within the limits of grid standards. This paper compares and analyses the impact of the common mode leakage current for four popular inverter configurations through simulation of the topologies such as H5, H6, HERIC and FBZVR inverters.

Performance of Combined PV-Inverter System: Use of Amorphous and Crystalline Panels

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Carlos Armenta-Deu
Keyword(s):  
Theoretical Analysis ◽  
Energy Resource ◽  
Experimental Tests ◽  
Photovoltaic System ◽  
Maximum Deviation ◽  
Photovoltaic Modules ◽  
Pv Inverter ◽  
Pv Panel ◽  
System Use ◽  
Good Agreement

This paper is aimed at analyzing the performance of a combined PV-inverter system connected to an external load using either amorphous or crystalline photovoltaic modules. The analysis is based on previous theoretical analysis that uses the efficiency of the PV panel and of the DC/AC inverter as a key parameter. Different configurations using the same energy resource have been simulated to determine the efficiency of the PV panel, DC/AC inverter, and of the whole system. The theoretical process shows that the global efficiency of the photovoltaic system increased from 87.2% in the case of crystalline panels to 96% for amorphous ones. Experimental tests have been run to validate the theoretical analysis. A very good agreement between theoretical results and experimental data has been found within a standard deviation of σ = 0.633 and a maximum deviation of 1%.

scholarly journals Behavior of Photovoltaic System during Solar Eclipse in Prague

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Martin Libra ◽  
Pavel Kouřím ◽  
Vladislav Poulek
Keyword(s):  
Solar Eclipse ◽  
Power Plants ◽  
Large Scale ◽  
Relative Size ◽  
Photovoltaic System ◽  
Natural Phenomenon ◽  
Pv System ◽  
Theoretical Assumption ◽  
Pv Panel ◽  
The Impact

PV power plants have been recently installed in very large scale. So the effects of the solar eclipse are of big importance especially for grid connected photovoltaic (PV) systems. There was a partial solar eclipse in Prague on 20th March 2015. We have evaluated the data from our facility in order to monitor the impact of this natural phenomenon on the behavior of PV system, and these results are presented in the paper. The behavior of PV system corresponds with the theoretical assumption. The power decrease of the PV array corresponds with the relative size of the solar eclipse.I-Vcharacteristics of the PV panel correspond to the theoretical model presented in our previous work.

scholarly journals Reliability Analysis of Bifacial PV Panel-Based Inverters Considering the Effect of Geographical Location

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 170
Author(s):  
Sainadh Singh Kshatri ◽  
Javed Dhillon ◽  
Sachin Mishra ◽  
Rizwan Tariq ◽  
Naveen Kumar Sharma ◽  
...  
Keyword(s):  
Negative Impact ◽  
Geographical Location ◽  
Energy Yield ◽  
Pv System ◽  
Technology Industry ◽  
Pv Inverter ◽  
Pv Panel ◽  
Recent Trends ◽  
Reliability Performance ◽  
Mission Profile

Recent trends in the photovoltaic (PV) technology industry are moving towards utilizing bifacial PV panels. Unlike traditional PV panels, bifacial PV panels can yield energy from both sides of the panel. Manufacturers specify that bifacial PV panels can harness up to 30% more energy than traditional PV panels. Hence, bifacial PV panels are becoming a common approach at low solar irradiance conditions to yield more energy. However, a bifacial PV panel increases PV inverter loading. The PV inverter is the most unreliable component in the entire PV system. This results in a negative impact on PV system reliability and cost. Hence, it is necessary to anticipate the inverter’s reliability when used in bifacial PV panels. This paper analyzes the reliability, i.e., lifetime, of PV inverters, considering both monofacial and bifacial PV panels for the analysis. Results showed that the increase in bifacial energy yield could significantly affect PV inverter reliability performance, especially in locations where the average mission profile is relatively high.

scholarly journals Experimental Investigation of Photovoltaic Partial Shading Losses under Different Operation Conditions

2020 ◽  
Vol 23 (1) ◽  
pp. 35-44
Author(s):  
Ali H. Numan ◽  
Zahraa Salman Dawood ◽  
Hashim A. Hussein
Keyword(s):  
Photovoltaic System ◽  
Transparent Material ◽  
Radiation Level ◽  
Partial Shading ◽  
Operation Conditions ◽  
Pv Panel ◽  
Pv Module ◽  
Module Performance ◽  
The Impact ◽  
Vertical Cell

The partial shading conditions have a significant effect on the performance of Photovoltaic system and the ability of delivering energy. In this study, the impact of different partial shading on the mono crystalline (88W) PV module performance was investigated in this study. Horizontal string, vertical string, and single cell shading at different percentage of shading area have been studied. It is found that the horizontal string shading is more severe on the efficiency of the PV panel. In contrast, the efficiency of PV panel with cellular and vertical cell shading was less during the tests. The experimental results showed that the power losses were 99.8%, 66% and 56.8 % for horizontal, cellular and vertical shading respectively via applied non transparent material as shading element by 100% of shading area at 500 W/m2. Moreover, transparent material used to shade whole module horizontally, different shading area and different radiation level applied to find electrical characteristics of the module under these conditions. The results show that at 800W/m2 of irradiation levels and no shading condition the power was 68.6W, by increase shading area by 20% in each step, the power reducing by 44.94, 47.58, 49.42, 50.57 and 52.4% in compared with their initial value at no shading condition.

scholarly journals Direct Usage of Photovoltaic Solar Panels to Supply a Freezer Motor with Variable DC Input Voltage

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 167
Author(s):  
Ali Farzan Moghaddam ◽  
Alex Van den Bossche
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
High Efficiency ◽  
Input Voltage ◽  
Boost Converter ◽  
Solar Panels ◽  
Pv Inverter ◽  
Pv Panel ◽  
Grid Connection

In this paper, a single-phase photovoltaic (PV) inverter fed by a boost converter to supply a freezer motor with variable DC input is investigated. The proposed circuit has two stages. Firstly, the DC output of the PV panel that varies between 150 and 300 V will be applied to the boost converter. The boost converter will boost the input voltage to a fixed 300 V DC. Next, this voltage is supplied to the single-phase full bridge inverter to obtain 230 V AC. In the end, The output of the inverter will feed a freezer motor. The PV panels can be stand-alone or grid-connected. The grid-connected PV is divided into two categories, such as with a transformer and without a transformer, a transformer type has galvanic isolation resulting in increasing the security and also provides no further DC current toward the grid, but it is expensive, heavy and bulky. The transformerless type holds high efficiency and it is cheaper, but it suffers from leakage current between PV and the grid. This paper proposes a stand-alone direct use of PV to supply a freezer; therefore, no grid connection will result in no leakage current between the PV and Grid. The proposed circuit has some features such as no filtering circuit at the output of the inverter, no battery in the system, DC-link instead of AC link that reduces no-loads, having a higher efficiency, and holding enough energy in the DC-link capacitor to get the motor started. The circuit uses no transformers, thus, it is cheaper and has a smaller size. In addition, the system does not require a complex pulse width modulation (PWM) technique, because the motor can operate with a pulsed waveform. The control strategy uses the PWM signal with the desired timing. With this type of square wave, the harmonics (5th and 7th) of the voltage are reduced. The experimental and simulation results are presented to verify the feasibility of the proposed strategy.

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