The impact of gate-driver parameters variation and device degradation in the PV-inverter lifetime

2014 ◽  
Author(s):  
C. Sintamarean ◽  
H. Wang ◽  
F. Blaabjerg ◽  
F. Iannuzzo
Keyword(s):  
Pv Inverter ◽  
Gate Driver ◽  
The Impact

Active Gate Driver for SiC-MOSFET-Based PV Inverter With Enhanced Operating Range

2019 ◽  
Vol 55 (2) ◽  
pp. 1677-1689 ◽  
Author(s):  
Sayan Acharya ◽  
Xu She ◽  
Fengfeng Tao ◽  
Tony Frangieh ◽  
Maja Harfman Todorovic ◽  
...  
Keyword(s):  
Operating Range ◽  
Pv Inverter ◽  
Gate Driver

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

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.

Research on the Suppression of Input Power Disturbance for Single-Phase Photovoltaic Grid-Connected Inverter

2011 ◽  
Vol 128-129 ◽  
pp. 243-246
Author(s):  
Kai Chen ◽  
Shu Lin Tian ◽  
Yu Hua Cheng
Keyword(s):  
Control Algorithm ◽  
Single Phase ◽  
Power Transmission ◽  
Input Power ◽  
Voltage Fluctuations ◽  
Theoretical Derivation ◽  
Pv Inverter ◽  
Maximum Power Tracking ◽  
Grid Connected Inverter ◽  
The Impact

The output power of single-phase PV inverter is AC and the input power is DC，so there exists fluctuations in the power transmission. Generally, the fluctuations can be removed by using coupling capacitors. However, the voltage fluctuations of coupling capacitors will result in corresponding input power fluctuations, and will affect the maximum power tracking of the system. In this paper, the power transfer process is analysised, and a theoretical derivation to voltage fluctuations of the generatrix capacitor and the impact on the input currents is designed.The corresponding correction control algorithm of subdivision control is developed according to its characteristics. The feasibility of the solution is verified by the 3KW experimental prototype.

System Improvements of Photovoltaic Inverters with SiC-Transistors

2010 ◽  
Vol 645-648 ◽  
pp. 1171-1176 ◽  
Author(s):  
Dirk Kranzer ◽  
Florian Reiners ◽  
Christian Wilhelm ◽  
Bruno Burger
Keyword(s):  
Power Density ◽  
Single Phase ◽  
State Of The Art ◽  
Production Costs ◽  
World Record ◽  
Pv Inverter ◽  
Three Phase ◽  
Single Phase Inverter ◽  
Basic Characteristics ◽  
The Impact

In this paper the system improvements of PV-inverters with SiC-transistors are demonstrated. The basic characteristics of engineering prototypes of normally-off SiC-JFETs and SiC-MOSFETs were measured and their differences in the application are considered. To demonstrate the improvement in PV-inverter performance, a 5 kW single-phase and a three-phase full bridge inverter with normally-off SiC-JFETs were developed at Fraunhofer ISE. Different switching frequencies up to 144 kHz were applied and the impact on production costs and inverter performance was rated under the aspects of an industrial product development. This means, the influences on the efficiency and power density. In this work, a world record in PV-inverter efficiency of 99 % was achieved in a single-phase inverter and for the three-pase inverter, the power density was tripled with respect to commercially available state of the art PV-inverters.

scholarly journals Researches of the Impact of the Nominal Power Ratio and Environmental Conditions on the Efficiency of the Photovoltaic System: A Case Study for Poland in Central Europe

2020 ◽  
Vol 12 (15) ◽  
pp. 6162
Author(s):  
Mariusz T. Sarniak
Keyword(s):  
Climatic Conditions ◽  
Photovoltaic System ◽  
Energy Yield ◽  
Power Ratio ◽  
Pv System ◽  
Second Stage ◽  
Pv Inverter ◽  
System A ◽  
The Impact

The paper analyzes a case study of the impact of changing the nominal power ratio (NPR) on the efficiency of a PV (photovoltaic) system located in Poland. In the first stage of the research, the acceptable range of variability for NPR was determined based on simulation calculations, taking into account the parameters of PV modules, inverter, and climatic conditions. The second stage was verification tests for two acceptable extreme cases, carried out based on the analysis of detailed data from the monitoring of PV installations. The results of the verification tests for the two considered periods of operation of the PV system with the change of the NPR coefficient from 82% to 98% resulted in an increase in the annual energy yield by 446.2 kWh. On the other hand, higher relative values of generated energy were obtained only for the months with the lowest insolation in December and in January by 8.2 and 6.04 kWh/kWp, respectively. Higher oversizing of the PV generator (for NPR = 82%) also resulted in an increase by 6.4% in the frequency of operation of the PV inverter in the largest power range (2250–2500 W) and a decrease by 3.7% in the frequency in the lowest power range (0–250 W) for the whole year.

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

Active gate driver for SiC MOSFET based PV inverter with enhanced operating range

2018 ◽  
Author(s):  
Sayan Acharya ◽  
Xu She ◽  
Fengfeng Tao ◽  
Tony Frangieh ◽  
Maja Harfman Todorovic ◽  
...  
Keyword(s):  
Operating Range ◽  
Pv Inverter ◽  
Gate Driver

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

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