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Proceedings ArticleDOI: 10.1109/ICAEE.2014.6838484

A new seven level symmetric inverter with reduced number of switches and DC sources

19 Jun 2014-pp 1-6
Abstract: This Multilevel inverter technology has recently become known has a very important substitute in the area of high power medium voltage energy control. Though multilevel inverter has several advantages it has drawbacks like for higher levels more number of semiconductor switches needed this may lead to huge size and cost of the inverter is very high. So in order to overcome this problem a new multilevel inverter is proposed with reduced number of switches. The proposed topology has three Dc sources and six Switches and it is well suited for high power applications. Level shifted PWM technique is used to generate the sine wave for the proposed topology. The Circuit is simulated in Matlab/Simulink and effect of harmonic spectrum is analyzed through the Fast Fourier transform window. The performance parameters of the proposed multilevel inverter are compared with the conventional MLI and another seven level existing topologies.

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Topics: Inverter (58%), Topology (electrical circuits) (53%), Sine wave (51%) ...read more
Citations
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Proceedings ArticleDOI: 10.1109/PEEIC.2018.8665455
13 Apr 2018-
Abstract: 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 various multilevel inverters with reduced number of switches topologies has been discussed. A novel topology of single phase 15-level inverter which consists least number of switches has been designed for a desired voltage level. Also, the comparison of Total harmonic distortion(THD) developed in the proposed 15-level inverter with output voltage generated by different topology at different levels are discussed. The output of proposed topology contains THD (<5%) as per IEEE 519 standard.

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Topics: Total harmonic distortion (59%), Topology (electrical circuits) (57%), Inverter (55%) ...read more

5 Citations


Open accessJournal ArticleDOI: 10.14419/IJET.V7I4.5.20111
Abstract: 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.

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3 Citations


Proceedings ArticleDOI: 10.1109/ICRIEECE44171.2018.9009165
01 Jul 2018-
Abstract: This paper presents a comparative analysis of four different topologies of an eleven level inverter (ELI) based on criterion like total harmonic distortion (THD), complexity of the circuit and numbers of switching devices and components considering solar photo voltaic cells via boosters as input sources. The topologies considered are neutral point clamped or diode clamped type, flying capacitor type, cascaded H-bridge type and the reduced switch version of the cascaded H-bridge type. These configurations are modeled in MATLAB/simulink software environment for an eleven level inverter. Each switch of the single phase ELI is controlled by giving pulse with the help of PWM generator. The comparison results are presented and discussed.

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Topics: Total harmonic distortion (54%), Inverter (53%)

1 Citations


Proceedings ArticleDOI: 10.1109/ICPS48983.2019.9067356
01 Dec 2019-
Abstract: In this research paper, a 1-φ multi-level inverter configuration with the decreased number of switching components is recommended for distributed energy resource applications. The planned inverter able to generate seven and nine output voltage levels with symmetrical and asymmetrical source configuration. Due to the decreased number of semiconductor switches the topology has low power loss compared to conventional 7-level inverter. The developed topology has reliable operation in case of switch failure. The developed topology is simulated with the assistance of Matlab/Simulink software.

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References
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Open accessBook
26 Jul 1989-
Abstract: Partial table of contents: Overview of Power Semiconductor Switches Computer Simulation of Power Electronic Converters and Systems GENERIC POWER ELECTRONIC CIRCUITS dc--dc Switch-Mode Converters Resonant Converters: Zero-Voltage and/or Zero-Current Switchings POWER SUPPLY APPLICATIONS Power Conditioners and Uninterruptible Power Supplies MOTOR DRIVE APPLICATIONS dc Motor Drives Induction Motor Drives Synchronous Motor Drives OTHER APPLICATIONS Residential and Industrial Applications Optimizing the Utility Interface with Power Electronic Systems SEMICONDUCTOR DEVICES Basic Semiconductor Physics Power Diodes Power MOSFETs Thyristors Emerging Devices and Circuits PRACTICAL CONVERTER DESIGN CONSIDERATIONS Snubber Circuits Gate and Base Drive Circuits Design of Magnetic Components Index

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Topics: Power module (67%), Switched-mode power supply (65%), Power electronics (64%) ...read more

5,802 Citations


Open accessBook
21 May 1993-
Abstract: 1. Introduction. 2. Power Semiconductor Diodes and Circuits. 3. Diode Rectifiers. 4. Power Transistors. 5. DC-DC Converters. 6. Pulse-width Modulated Inverters. 7. Thyristors. 8. Resonant Pulse Inverters. 9. Multilevel Inverters. 10. Controlled Rectifiers. 11. AC Voltage Controllers. 12. Static Switches. 13. Flexible AC Transmission Systems. 14. Power Supplies. 15. DC Drives. 16. AC Drives. 17. Gate Drive Circuits. 18. Protection of Devices and Circuits. Appendices: Three-phase Circuits, Magnetic Circuits, Switching Functions of Converters, DC Transient Analysis, Fourier Analysis, Thyristor Commutation Techniques, Data Sheets.

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Topics: Power electronics (64%), Power semiconductor device (58%), Thyristor (57%) ...read more

2,010 Citations


Journal ArticleDOI: 10.1109/TPEL.2008.2005192
Ebrahim Babaei1Institutions (1)
Abstract: This paper introduces a new multilevel converter topology that has many steps with fewer power electronic switches. The proposed circuit consists of series-connected submultilevel converters blocks. The optimal structures of this topology are investigated for various objectives, such as minimum number of switches and capacitors, and minimum standing voltage on switches for producing maximum output voltage steps. A new algorithm for determination of dc voltage sourcespsila magnitudes has also been presented. The proposed topology results in reduction of the number of switches, losses, installation area, and converter cost. The operation and performance of the proposed multilevel converter has been verified by the simulation and experimental results of a single-phase 53-level multilevel converter.

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Topics: Ćuk converter (65%), Boost converter (64%), Forward converter (64%) ...read more

567 Citations


Journal ArticleDOI: 10.1049/IET-PEL.2010.0332
P. Palanivel1, Subhransu Sekhar Dash1Institutions (1)
Abstract: Multilevel inverter is used in applications that need high voltage and high current. The topologies of multilevel inverter have several advantages such as lower total harmonic distortion (THD), lower electro magnetic interference (EMI) generation, high output voltage. The main feature of multilevel inverter is the ability to reduce the voltage stress on each power device due to the utilisation of multilevel on the DC bus. The advent of multilevel inverter topologies has caused variety of pulse width modulation strategies. In this paper, various carrier pulse width modulation techniques are proposed, which can minimise the total harmonic distortion and enhances the output voltages from five level inverter. Three methodologies adopting the constant switching frequency (CSF), variable switching frequency (VSF), and phase shifted pulse width modulation (PSPWM) concepts are proposed in this paper. The above methodologies divided into two techniques like subharmonic pulse width modulation which minimises total harmonic distortion and switching frequency optimal pulse width modulation which enhances the output voltages. Field programmable gate array (FPGA) has been chosen to implement the pulse width modulation due its fast proto typing, simple hardware and software design. The simulation and experimental results are presented.

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167 Citations


Journal ArticleDOI: 10.1049/IET-PEL.2011.0263
Abstract: Multilevel inverters have an important portion in power processing in power systems. These inverters have some inherent advantages such as ability to operate with high power and voltage, improved output waveform quality and flexibility which make them attractive and more popular. This study proposes a new topology based on the non-insulated dc voltage sources for multilevel inverter with reduced number of switching devices. As a result, it reduces control complexity and gate driver circuits. The proposed topology is a general topology which can be easily extended to a desired number of voltage levels. All of the desired output voltage levels (both odd and even) can be achieved using the proposed topology. The validity of the proposed multilevel inverter is verified with both computer simulation and experimental results from a 15-level laboratory prototype.

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Topics: Voltage regulation (61%), Voltage optimisation (60%), Low-dropout regulator (59%) ...read more

114 Citations


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