scholarly journals A modified PV fed 9 level inverter for standalone applications with reduced number of switches

2017 ◽  
Vol 7 (1.2) ◽  
pp. 33
Author(s):  
Jaikrishna V ◽  
Subhranhsu Sekhar Dash ◽  
Linss T Alex
Keyword(s):  
Harmonic Distortion ◽  
Cost Effective ◽  
Digital Controller ◽  
Power Electronic ◽  
Pv System ◽  
Suggested Technique ◽  
Multi Level ◽  
Hardware Circuit ◽  
Inverter Topology ◽  
Electronic Switches

The power crisis in India is increasing at an alarming rate. Solar power is a domestic source of energy and its availability throughout the year makes it a primary target to solve this crisis. It will never produce any hazardous waste and it won’t pollute the air. But various issues like Power quality problems and Harmonic distortion seep in due to the intermittent nature of PV system. Multi-Level Inverter (MLI) gives solution for PQ issues and helps in high power handling capabilities. In this work a new multilevel inverter topology is proposed. The controlled pulses are generated through sinusoidal PWM techniques. The proposed topology is implemented and the controlled circuit is simulated in MATLAB/SIMULINK. The same is realized in the hardware circuit having a cost effective dsPIC30F2010 digital controller. The proposed topology consists of only seven power electronic switches and that is the main advantage of this topology. The Simulation results and the Hardware results reveal that the suggested technique is highly advantageous.

scholarly journals Mitigation of load side harmonic distortion in standalone photovoltaic based microgrid

2021 ◽  
Vol 304 ◽  
pp. 01010
Author(s):  
Adel Aljwary ◽  
Ziyodulla Yusupov ◽  
Olimjon Toirov ◽  
Rustam Shokirov
Keyword(s):  
Power Systems ◽  
Electrical Power ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Energy Resources ◽  
Power Electronic ◽  
Solar Pv ◽  
Distributed Energy ◽  
Pv System ◽  
Simulation Results

Photovoltaic (PV) system as one part of distributed energy resources is becoming an alternative for low and medium distribution network of microgrid. By the reason of a wide implementation of power electronic and non-linear loads, harmonics distortion is one of the main problems for the power systems. There are several filter types to mitigate the harmonics. The passive filter is distinguished by its simplicity and economical options from another filters. In this paper, the passive single tuned filter (STF) is used to minimize harmonics distortion in standalone PV based microgrid. A solar PV array is modelled as an ideal single diode model (ISDM) and used to supply electrical power to an AC load. The simulation results are executed on MATLAB/Simulink show that STF is effective in mitigating the voltage total harmonic distortion (VTHD) and the current total harmonic distortion (ITHD) with enhancing the output power quality.

scholarly journals PV Fed Seven-Level Inverter using Fuzzy Control Technique

2019 ◽  
Vol 9 (2) ◽  
pp. 4102-4106
Keyword(s):  
Fuzzy Control ◽  
Simulation Study ◽  
Harmonic Distortion ◽  
Critical Factor ◽  
Control Technique ◽  
Power Electronic ◽  
Switching Loss ◽  
Power Electronic Converters ◽  
Multi Level ◽  
Photo Voltaic

In recent decades, multi level inverter has been playing important role to lessen the total harmonic distortion in the power electronic converters. The number of switches and and its losses have been the critical factor in multi-level inverters. In this Proposed technique, photo-voltaic based seven level inverter has been proposed to adjust the harmonics in the multi-level inverter. This proposed circuit consists of DC to DC converter and capacitor selection circuit. The number of switches utilized is very less and switching loss also less. A part from simulation study, the hardware proves the advantages of proposed system

scholarly journals A Comprehensive Analysis of Partial Shading Effect on Output Parameters of a Grid-connected PV System

2018 ◽  
Vol 8 (2) ◽  
pp. 749
Author(s):  
H. Rahimi Mirazizi ◽  
M. A. Shafiyi
Keyword(s):  
Harmonic Distortion ◽  
Comprehensive Analysis ◽  
Test Results ◽  
Pv System ◽  
Partial Shading ◽  
Pv Panel ◽  
System Output ◽  
Multi Level ◽  
And Performance ◽  
Set Up

One of the issues of grid-connected photovoltaic systems is the effect of the partial shading on the key parameters and performance of the system. In practice, a share of the entire PV panel may shadded because of the various reasons, inevitably. In this case, the key parameters of the system output are affected with respect to the shading extent and paradigm. In this paper, the effects of the various partial shading patterns on the ouput of the system are examined. This is performed by deriving relevant equations and appropriate modeling of the system and defining different scenarios. The analysis on the system performance is carried out on the dominant output parameters including panel voltage, panel power, and total harmonic distortion (THD) of the inverter. Also, the study considers the effect of using bypass diodes in the panels or not. Addintionally, to compare derived conclusions, the study is implementd on a practical system. The set up is made up of a 7-level multi-level inverter, a Z-source converter, and 1 kW lateral circuitry. The real world test results of the study demonstrate a negligible deviation compared to the simulation results.

Multicarrier-SPWM Based Novel 7-Level Inverter Topology with Photovoltaic System

2017 ◽  
Vol 8 (2) ◽  
pp. 826
Author(s):  
R. Palanisamy ◽  
V. Sinmayee ◽  
K. Selvakumar ◽  
K. Vijayakumar
Keyword(s):  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Pv System ◽  
Switching Losses ◽  
Common Mode Voltage ◽  
Voltage Stress ◽  
Inverter Topology ◽  
Sinusoidal Pulse Width Modulation

<p>In this paper a novel 5 switch seven level DC-AC inverter is being proposed. The proposed multilevel inverter uses reduced number of switches as compared to the switches used in the conventional multilevel inverter. The inverter has been designed to generate a 7 level AC output using 5 switches. The voltage stress on each of the switches as well as the switching losses is found to be less, minimized common mode voltage (CMV) level and reduced total harmonic distortion. The proposed 7-level inverter topology has four dc sources, which is energized through the PV system. Proposed inverter is controlled with help of multicarrier sinusoidal pulse width modulation (MCSPWM).The simulation and hardware results were verified using matlab simulink and dspic microcontroller respectively.</p>

scholarly journals Grid Interconnection of PV System Using Symmetric and Asymmetric MLI Topology

2018 ◽  
Vol 9 (4) ◽  
pp. 1616
Author(s):  
V S Prasadarao K ◽  
V Joshi Manohar
Keyword(s):  
Output Voltage ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Electronic Components ◽  
Pv System ◽  
Multilevel Inverters ◽  
The Common ◽  
Low Distortion ◽  
Inverter Topology ◽  
Grid Interconnection

<span lang="EN-US">Generally, PV cell converts sunlight into electricity in the form of dc. Integration of PV system with the existing grid requires dc-ac conversion. This conversion is possible with the help of a dc-ac converter known as an inverter. Among all types of the inverter, multilevel inverters (MLIs) are playing a major role with all their major privileges like High power quality, low distortion, less blocking voltages for switching devices. Conventional multilevel inverter topologies such as diode clamped, flying capacitor and cascaded MLIs are having so many disadvantages. One of the common disadvantage among all the conventional MLIs is the requirement of more number of power electronic components as the level of the output voltage increase. To reduce the power electronic components this paper proposes a multilevel inverter topology in symmetrical and asymmetrical configuration. The proposed MLI uses 12 switches and 19 diodes which are very less compared to conventional MLI topologies for generates nine and thirteen level output voltages. Comparison between presented MLI topology and conventional MLI topologies is presented in this paper. Finally, the proposed MLI whose input is fed from the PV system is integrated into the grid. The proposed concept is validated by using the MATLAB/SIMULINK software and the appropriate results are presented in this paper.</span>

scholarly journals Improved 25-level inverter topology with reduced part count for PV grid-tie applications

2021 ◽  
Vol 12 (3) ◽  
pp. 1687
Author(s):  
Radouane Majdoul ◽  
Abelwahed Touati ◽  
Abderrahmane Ouchatti ◽  
Abderrahim Taouni ◽  
Elhassane Abdelmounim
Keyword(s):  
Harmonic Distortion ◽  
Minimum Cost ◽  
Cost Effective ◽  
Power Converter ◽  
Dc Voltage ◽  
Switching Losses ◽  
Power Switches ◽  
Flying Capacitors ◽  
Basic Source ◽  
Inverter Topology

<span lang="EN-US">A new bidirectional multilevel inverter topology with a high number of voltage levels with a very reduced number of power components is proposed in this paper. Only TEN power switches and four asymmetric DC voltage sources are used to generate 25 voltage levels in this new topology. The proposed multilevel converter is more suitable for e-mobility and photovoltaic applications where the overall energy source can be composed of a few units/associations of several basic source modules. Several benefits are provided by this new topology: Highly sinusoidal current and voltage waveforms, low Total Harmonic Distortion, very low switching losses, and minimum cost and size of the device. For optimum control of this 25-level voltage inverter, a special Modified Hybrid Modulation technique is performed. The proposed 25-level inverter is compared to various topologies published recently in terms of cost, the number of active power switches, clamped diodes, flying capacitors, DC floating capacitors, and the number of DC voltage sources. This comparison clearly shows that the proposed topology is cost-effective, compact, and very efficient. The effectiveness and the good performance of the proposed multilevel power converter (with and without PWM control) are verified and checked by computational simulations.</span>

scholarly journals Hardware Implementation of an Enhanced Seven Level H Bridge Inverter with Reduced Switch Configuration

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1170-1175
Keyword(s):  
Hardware Implementation ◽  
Focal Point ◽  
Renewable Energy Sources ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Power Demand ◽  
Multi Level ◽  
Voltaic Cell ◽  
Sustainable Power ◽  
Electronic Switches

There are various boundaries in extracting power through Renewable energy sources. To reduce the insufficiency and high power demand we need to look up power extracting Techniques. To take out power through divergent sustainable power source assets for example solar energy, Photo Voltaic cell, Wind energy, Multilevel inverter is used .It orchestrates the preferred ac production from a number of dc input sources. The primary focal point of the paper is develop the productivity of level inverter and get better the nature of yield voltage by way of diminish number of power electronic switches. Here MOSFETs are used as switches. In this Paper, Simulation along with hardware design of 7-level cascaded Multi-level inverter and reduced switch multilevel inverter are presented.

Analysis of a New Reduced Switch Nine Level Inverter

2016 ◽  
Vol 1 (3) ◽  
pp. 490
Author(s):  
C.R. Balamurugan ◽  
S.P. Natarajan ◽  
R. Bensraj
Keyword(s):  
High Power ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Switching Strategy ◽  
Ac Drives ◽  
Multi Level ◽  
Structural Parts ◽  
The Cost ◽  
Electronic Switches

<p>The multi level inverter system is mostly used in ac drives, when both reduced harmonic contents and high power are required. In this paper a new topology of multilevel inverter is introduced. This type has many steps with less power electronic switches. Due to the less number of switches the cost of the inverter is very less and also less installation area is required. Firstly, we describe briefly the structural parts of the inverter then switching strategy and operational principles of the proposed inverter are explained and operational topologies are given. Simulation is performed using MATLAB SIMULINK. Various PWM techniques are applied to the circuit such as PDPWM, PODPWM, APODPWM, VFPWM and COPWM. By comparing among the PWM techniques, PODPWM provide the less THD value and COPWM provide a higher fundamental RMS output voltage.</p><p> </p>

Hardware Implementation of Solar Based Boost to SEPIC Converter Fed Nine Level Inverter System

2016 ◽  
Vol 7 (4) ◽  
pp. 1031
Author(s):  
D. Jasmine ◽  
M. Gopinath
Keyword(s):  
High Power ◽  
Hardware Implementation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Experimental Results ◽  
Pv System ◽  
Multi Level ◽  
Simulation Results ◽  
Fft Analysis

Multi level inverters are widely used in high power applications because of low harmonic distortion. This paper deals with the simulation and implementation of PV based boost to SEPIC converter with multilevel inverter. The output of PV system is stepped up using boost to sepic converter and it is converted into AC using a multilevel inverter. The simulation and experimental results with the R load is presented in this paper. The FFT analysis is done and the THD values are compared. Boost to SEPIC converter is proposed to step up the voltage to the required value. The experimental results are compared with the simulation results. The results indicate that nine level inverter system has better performance than seven level inverter system.

scholarly journals Grid tied PV System using modular multilevel inverter

2019 ◽  
Vol 10 (4) ◽  
pp. 2013
Author(s):  
Sujitha N. ◽  
Partha Sarathi Subudhi ◽  
Krithiga S. ◽  
Angalaeswari S. ◽  
Deepa T. ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Basic Unit ◽  
Pv System ◽  
Unit Structure ◽  
Dc Power ◽  
Ac Power ◽  
Inverter Topology

A grid tied photovoltaic system using modular multilevel inverter topology is proposed in this paper. Basic unit structure of modular multilevel inverter used in this system is capable of converting DC power from PV array to AC power for feeding power to the household loads or utility grid. The proposed modular multilevel inverter structure has lesser power electronic devices compared to the existing multilevel inverter topologies. The proposed system generates a nearly sinusoidal signal and achieves better output profile with low total harmonic distortion. Simulation of the proposed system is carried out in MATLAB/Simulink software and the results are presented.

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