scholarly journals Reduced Switch Multilevel Inverter Topologies And Modulation Techniques For Renewable Energy Applications

2021 ◽  
Vol 12 (3) ◽  
pp. 4659-4670
Author(s):  
Ujwala Gajula Et.al
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Multilevel Inverter ◽  
Medium Voltage ◽  
Multilevel Inverters ◽  
Energy Applications ◽  
Converter Topology ◽  
Overall Performance

Multilevel inverters (MLIs) have been extensively used and gained interest over last few decades in industrial and grid connected renewable energy applications because of its numerous merits. Besides various advantages like obtaining reduced harmonic distortion and lesser dv/dt stress across switches it has the capability of generating any number of levels. The theory of multilevel concept was initiated for high power and high/medium voltage applications as they are helpful in interfacing with renewable energy sources. By proper combination of the switches it generates a stair case output with reduced harmonic distortion because of this MLI is widely used and it became one of the advanced power converter topology. The rise of new topologies has attained importance over conventional multilevel inverter topologies, which generates more number of levels with reduced switch components. This paper presents various conventional MLI topologies and hybrid MLI topologies for renewable energy applications. Also, this review paper includes different modulation strategies which plays an important role to improve the overall performance of MLI.

scholarly journals Modelling and Analysis of Novel Topology for Multilevel Inverter With Reduce Number of Switches

2018 ◽  
Vol 7 (4.5) ◽  
pp. 379 ◽  
Author(s):  
Rohit Kumar ◽  
Shimi S.L ◽  
Shivendra Kaura
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Energy Sources ◽  
Voltage Level ◽  
Multilevel Inverters ◽  
Harmonic Elimination ◽  
Increasing Demand ◽  
Inverter Topology

The demand of quality power is increasing continuously. The problem of global warming and rate of decrease of non-renewable energy sources are increasing day by day. Hence renewable energy sources such as fuel cell, solar, Magneto hydro Dynamic (MHD), geothermal are the best alternatives to solve the problem of environmental issue and increasing demand of energy.  The output of these resources is dc, therefore to connect these resources to the grid, multilevel inverter is the key device. But the output of multilevel inverter has power quality issues such as harmonic generation and notching due to conversion of dc to ac and high number of switch. Hence, this paper deals with harmonic elimination using Genetic Algorithm based Selective Harmonic Elimination (GA-SHE) techniques for asymmetric and symmetric topology of MLI. In the present study, comparative study among the 5-level, 7-level, 9-level, 11-level and 15-level multilevel inverters with reduced number of switches topologies has been discussed. A novel topology of 15-level inverter which consists least number of switches has been designed for a desired voltage level. Also, the comparison of Total harmonic distortion developed in the output voltage generated by different topology at different levels with the proposed 15-level inverter topology are discussed. 

scholarly journals Modular multilevel inverter for renewable energy applications

2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Arikesh A. ◽  
A. K. Parvathy
Keyword(s):  
Renewable Energy ◽  
Pulse Width Modulation ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Mathematical Operation ◽  
Energy Applications ◽  
Harmonic Reduction ◽  
Electrical Vehicle ◽  
Cascaded Multilevel Inverter

<p>This paper proposes a Multilevel Inverter (MLI) which focuses on two objective , minimal voltage sources and lesser switching component. The proposed Asymmetrical Cascaded Multilevel Inverter (ACMLI) is able to achieve the objective by selectively opting the voltage level of DC sources chosen and implementing the mathematical operation of addition and subtraction on the DC sources. This system also utilizes multiple carrier sinusoidal pulse width modulation technique (MCS-PWM) for operating the switches. It is found that the number of switches required for proposed modular bridge ACMLI and modified H bridge ACMLI was lesser than the traditional Cascaded H bridge Multilevel Inverter (CHB-MLI). It is also evident that the number of DC voltage sources and filter required for smoothing the output waveform is reduced compared to the traditional MLI. The Total Harmonic Distortion (THD) for the proposed circuit was simulated and analyzed in MATLAB Simulink environment and the results are found to be very less and satisfactory. The proposed circuit can find its application in integrating Renewable Energy Sources (RES) to the utility grid, Electrical Vehicle (EV) , harmonic reduction and so on. The simulation results of the proposed circuits are tabulated and compared with the traditional cascaded MLI.</p>

scholarly journals MATLAB/simulink study of multi-level inverter topologies using minimized quantity of switches

2017 ◽  
Vol 7 (1.5) ◽  
pp. 209
Author(s):  
B.Vijaya Krishna ◽  
B. Venkata Prashanth ◽  
P. Sujatha
Keyword(s):  
Harmonic Distortion ◽  
Pulse Generation ◽  
Multilevel Inverter ◽  
Matlab Simulink ◽  
Multilevel Inverters ◽  
Energy Applications ◽  
Electrical Drives ◽  
Switching Losses ◽  
Trigger Circuit ◽  
Inverter Topology

Multilevel Inverters (MLI) have very good features when compared to Inverters. But using more switches in the conventional configuration will reduce its application in a wider range. For that reason a modified 7-level MLI Topology is presented. This new topology consists of less number of switches that can be reduced to the maximum extent and a separate gate trigger circuit. This will reduce the switching losses, reduce the size of the multilevel inverter, and cost of installation. This new topology can be used in Electrical drives and renewable energy applications. Performance of the new MLI is tested via. Total harmonic distortion. This construction structure of this multilevel inverter topology can also be increased for 9-level, 11-level and so on and simulated by the use of MATLAB/SIMULINK. A separate Carrier Based PWM Technique is used for the pulse generation in this configuration.

scholarly journals A New Interconnection of Micro Grid Distributed Energy Sources using Space Vector Multilevel Inverter

2019 ◽  
Vol 8 (2S3) ◽  
pp. 185-190
Keyword(s):  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Space Vector ◽  
Multilevel Inverters ◽  
Power Resources ◽  
Renewable Power ◽  
Power Switches ◽  
Electric Parameters ◽  
Overall Performance ◽  
Micro Grid

This paper describes on a new compilation of micro grid era the usage of multilevel inverter. In this paper we have linked three renewable resources are parallel like wind turbine, PV cellular and Pico Hydel generator set to deliver strength to a exceptionally small assortment of residential, reputable of business building in a locality. The electricity is generated from renewable power resources and it's far connected to space vector primarily based multilevel inverter. Therefore the power is completely computerized for this reason the strength losses can be less, reduced switching sample losses and grids have the capacity to reply robotically to the versions in electric parameters answerable for the clean functioning of the grid [1]. Moreover, decrease prices of power switches in the new semiconductor technologies as well as the current demand on excessive overall performance inverters required through Renewable Energy Systems (RES) decreased total Harmonic distortion(THD) within the spectrum of switching waveform have extended the programs of Multilevel inverters

scholarly journals Reduction of Voltage Ripple in DC Link of Wind Energy Conservation System Using Modified DC-DC Boost Converter

2021 ◽  
Author(s):  
L. Hubert Tony Raj ◽  
R. Sivakumar ◽  
R. Akash ◽  
M. Anandha Chakravarthi
Keyword(s):  
Renewable Energy ◽  
Demand Curve ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Vertical Axis ◽  
Power Converter ◽  
Solar Pv ◽  
Vertical Axis Wind Turbine ◽  
Energy Applications ◽  
Hybrid Renewable Energy

Renewable energy provisions must be extracted in a more resourceful way, with a power converter added to the mix. If the supply-demand curve rises with the seasons, it becomes clear that renewable energy sources are used to provide clean energy. This clean energy cannot be used on load directly due to fluctuating conditions, to solve this problem a modified DC to DC converter with a ripple-free output is introduced. The Vertical Axis Wind Turbine (VAWT) and Solar PV were combined to achieve a constant DC output in a hybrid renewable energy conversion system. For renewable energy applications, a redesigned converter with ripple-free output is used. The simulation is made under MATLAB/SIMULINK and experimental parameters were measured using a nominal prototype.

scholarly journals A New Multilevel Inverter Topology for Grid-Connected Photovoltaic Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Muhammad Bilal Satti ◽  
Ammar Hasan ◽  
Mian Ilyas Ahmad
Keyword(s):  
Solar Energy ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic Systems ◽  
Maximum Power Point ◽  
Multilevel Inverters ◽  
Direct Model ◽  
Power Point ◽  
Inverter Topology

The demand for clean and sustainable energy has spurred research in all forms of renewable energy sources, including solar energy from photovoltaic systems. Grid-connected photovoltaic systems (GCPS) provide an effective solution to integrate solar energy into the existing grid. A key component of the GCPS is the inverter. The inverter can have a significant impact on the overall performance of the GCPS, including maximum power point (MPP) tracking, total harmonic distortion (THD), and efficiency. Multilevel inverters are one of the most promising classes of converters that offer a low THD. In this paper, we propose a new multilevel inverter topology with the motivation to improve all the three aforementioned aspects of performance. The proposed topology is controlled through direct model predictive control (DMPC), which is state of the art in control techniques. We compare the performance of the proposed topology with the topologies reported in literature. The proposed topology offers one of the best efficiency, MPP tracking, and voltage THD.

scholarly journals Compare the Symmetric Hybridized Cascaded MLI with 17 levels with the Asymmetric Switched Capacitor MLI Topologies for Dynamic Loading

2021 ◽  
Vol 9 (VII) ◽  
pp. 1951-1958
Author(s):  
Jayesh B. Patil
Keyword(s):  
Renewable Energy ◽  
Dynamic Loading ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Total Harmonic Distortion ◽  
Switched Capacitor ◽  
Matlab Simulink ◽  
Energy Applications ◽  
Load Disturbance

This article builds a symmetric hybridized cascaded a switching capacitor unit in a multilayer inverter and compares it to For 17 level inverters, A switched capacitor unit is utilized with an asymmetric multilevel inverter. In the symmetric hybridized multilevel inverter design, a In the midst of a dual-input dc source, there is a bi-directional switch is utilized to create a modified H-bridge inverter with a five-level output voltage instead of three. In the proposed scenario, In an asymmetric multilevel inverter, the switched capacitor unit substitutes the dc sources. which enlarges By a factor of two, The output voltage has been increased. and the voltage levels at the loads are increased by a factor of two. MATLAB-SIMULINK was used to verify the suggested topology using the staircase modulation approach. The findings show that multilayer inverter topologies with low total harmonic distortion, fewer switches, With greater levels of output voltage are better stable during load disturbance circumstances, making them ideal for renewable energy applications.

A Review on Voltage Balancing Solutions in Multilevel Inverters

2015 ◽  
Vol 1 (1) ◽  
pp. 53
Author(s):  
M. Ranjitha ◽  
S. Ravivarman
Keyword(s):  
Renewable Energy ◽  
High Power ◽  
Multilevel Inverter ◽  
Capacitor Discharge ◽  
Voltage Balancing ◽  
Medium Voltage ◽  
Multilevel Inverters ◽  
Voltage Balance

<p>Multilevel inverters are used in high power and medium voltage applications. Employing multilevel inverter with renewable energy alone, the voltage balance cannot be made because the number of level increases in multilevel inverter the control gets complexity. So voltage imbalance problems are introduced. The voltage imbalance problems can be classified into two types; Midpoint unbalance and the central capacitor discharge. These problems can be solved by using voltage balancing solutions. The solutions are hardware based; software based, and combined solutions. By using these types of solutions the voltage balancing problems can be solved and the efficiency of multilevel inverter could be high. This paper reviews about various voltage balancing solutions in multilevel inverter.<strong></strong></p>

scholarly journals Analysis of series/parallel multilevel inverter with symmetrical and asymmetrical configurations

2019 ◽  
Vol 10 (1) ◽  
pp. 300
Author(s):  
Motaparthi Nagaraju ◽  
Malligunta Kiran Kumar
Keyword(s):  
Renewable Energy ◽  
Output Voltage ◽  
Renewable Energy Sources ◽  
Multilevel Inverter ◽  
Energy Sources ◽  
Major Drawback ◽  
Medium Voltage ◽  
Bridge Type ◽  
Result Analysis ◽  
Inverter Topology

<p>Usage of high power and medium voltage applications in domestic and industrial purpose has been increased in the recent years. Also, the penetration of renewable energy sources is increasing rapidly. To make use the renewable energy sources there is a need of using inverters. The basic inverter is conventional two level inverter which produces the square wave output voltage. The major drawback of conventional inverter is it contains more harmonics. Therefore, multilevel inverters have been introduced with staircase output voltage waveform. Lot of multilevel inverter topologies have been developed and cascaded H bridge type is the more frequently used. But, it requires more number of switches for higher output voltage level. In this paper, a novel 7 level asymmetrical multilevel inverter topology is proposed with less number of switches. This proposed topology is compared with already existing topology. The simulation of circuit and result analysis of the circuit is carried out by using Matlab/simulink software. The comparison between existing topology and proposed topology is given. The results are discussed and presented.</p>

scholarly journals Multi-Port PWM DC-DC Power Converter for Renewable Energy Applications

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3490
Author(s):  
Abdulaziz Almutairi ◽  
Khairy Sayed ◽  
Naif Albagami ◽  
Ahmed G. Abo-Khalil ◽  
Hedra Saleeb
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Renewable Energy Sources ◽  
Power Converter ◽  
Energy Sources ◽  
Slow Response ◽  
Power Sources ◽  
Energy Applications ◽  
Dc Power ◽  
The Impact

In this paper, a new multi-port DC-DC power converter used to deal with the intermittent nature and slow response in renewable energy applications is proposed. The proposed converter integrates a DC-DC converter and a DC-AC inverter, and the proposed circuit integrates various renewable energy sources in addition to the energy storage unit. By combining renewable energy sources with a statistical trend to offset each other, the impact of the intermittency can be considerably minimized. This combination increases the overall system reliability and usability. Moreover, integrating such systems with energy storage systems can overcome the slow response issue of renewable sources. It can provide the additional energy required by the load or absorb the extra energy provided by the power sources, which greatly improves the dynamics of the overall system. The proposed converter can reduce the system cost and size and improve the efficiency and reliability. The operation principle is studied in detail, and the design considerations are provided. The proposed architecture and its control strategy were analyzed and studied using the Simulink/MATLAB environment. Finally, the feasibility of the proper operation of the studied converter was experimentally verified based on the results of experimental studies conducted on a 300 W prototype implemented in a laboratory.

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