Impedance Source-based Multilevel Inverter: A State-of-the-Art Review

2020 ◽  
Vol 29 (13) ◽  
pp. 2030011
Author(s):  
Jammy Ramesh Rahul ◽  
Chinmay Kumar Das ◽  
Kirubakaran Annamalai ◽  
Veeramraju Tirumala Somasekhar
Keyword(s):  
Input Voltage ◽  
Voltage Regulation ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Gain Switching ◽  
High Voltage Gain ◽  
Filter Size ◽  
Quality Of Supply ◽  
And Control

Impedance source-based multilevel inverters are becoming popular for emerging power generation technologies such as fuel cells, photovoltaic, and wind turbines. It is one of the most promising power electronic interfaces for single stage DC/AC conversion with inherent buck-boost capability. Therefore, in this paper, an extensive review of emerging impedance source-based multilevel inverter (Z-MLI) topologies is presented. These topologies are developed by the combination of impedance source network and multilevel inverter (MLI) with the merits of high voltage gain, enhanced reliability due to shoot-through immunity, improved input voltage regulation, reduced filter size, and better quality of supply. Most of the recent Z-MLI topologies are based on quasi-Z-source network which operates with continuous input current. In order to identify a suitable topology, an exhaustive comparison is made with various configurations of Z-MLIs in terms of component count, boost gain, switching stress, and control complexity.

Performance Analysis of H-bridge and T-Bridge Multilevel Inverters for Harmonics Reduction

2018 ◽  
Vol 9 (1) ◽  
pp. 231 ◽  
Author(s):  
S. Usha ◽  
C. Subramani ◽  
A. Geetha
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Semiconductor Switches ◽  
Output Waveform ◽  
Cascaded Multilevel Inverter ◽  
Sinusoidal Pulse Width Modulation

This paper deals with the design of cascaded 11 level H- bridge inverter. It includes a comparison between the 11 level H-bridge and T-bridge multilevel inverter. The cascaded inverter of higher level is a very effective and practical solution for reduction of total harmonic distortion (THD).These cascaded multilevel inverter can be used for higher voltage applications with more stability. As the level is increased the output waveform becomes more sinusoidal in nature. The inverter is designed using multicarrier sinusoidal pulse width modulation technique for generating triggering pulses for the semiconductor switches used in the device. Through this paper it will be proved that a cascaded multilevel H-bridge topology has higher efficiency than a T-bridge inverter, as whichever source input voltage is provided since input is equal to the output voltage. In T-bridge inverter, the output obtained is half of the applied input, so efficiency is just half as compared to H-bridge. The output waveform is distorted and has higher THD.  The simulation is performed using MATLAB /Simulink 2013 software.

Multi-Agent Regulation of Voltage in Smart Grid System with the Use of Distributed Generation and Customers

2014 ◽  
Vol 698 ◽  
pp. 761-767 ◽  
Author(s):  
Alexander G. Fishov ◽  
Irina L. Klavsuts ◽  
Dmitry A. Klavsuts
Keyword(s):  
Smart Grid ◽  
Low Voltage ◽  
Voltage Regulation ◽  
Grid System ◽  
Generation Network ◽  
Multi Agent ◽  
Smart Grid System ◽  
And Control ◽  
Distribution Grids

The paper considers the solution to the problem of distributed voltage regulation in Smart Grid System. It takes into consideration the conflict of interests of companies included in the generation network and consumers of electricity. The paper presents an innovative method of demand side management which can be used for controlling the quality of electricity optimization of consumption and conservation of electric power in distribution grids of low voltage class; to start a service of voltage regulation to the consumers in the parts of the grid adjoining to the nodes of generation; to develop the grid and realize the regulation of the voltage by the network companies during load and generation active behavior. The decentralized regulation of voltage is supposed to be the basic organization principal which uses local information and control actions. The control of the facilities of voltage regulation is performed via the artificial intelligence (expert systems).

scholarly journals Performance Analysis and control strategies of Cascaded Multilevel Converters

2019 ◽  
pp. 327-336
Author(s):  
Polu Veera Pratap ◽  
S. Sridhar
Keyword(s):  
Performance Analysis ◽  
High Voltage ◽  
High Power ◽  
Control Strategies ◽  
Multilevel Inverter ◽  
Multilevel Converters ◽  
Matlab Simulink ◽  
Multilevel Inverters ◽  
And Control ◽  
Gate Drives

Multilevel inverters have been widely used for high-voltage and high-power applications. Their perf0rmance is greatly superi0r t0 that 0f c0nventi0nal tw0-level inverters due t0 their reduced t0tal harm0nic dist0rti0n (THD),. This t0p0l0gy requires fewer c0mp0nents when c0mpared t0 di0de clamped, flying capacit0r and Bridgeless cascaded inverters and it requires fewer carrier signals and gate drives. Theref0re, the 0verall c0st and circuit c0mplexity are greatly reduced. This paper presents a n0vel reference and multicarrier based PWM scheme It als0 c0mpares the perf0rmance 0f the pr0p0sed scheme with that 0f c0nventi0nal cascaded bridge less rectifier (CBR) multilevel inverters. finally Simulati0n results fr0m MATLAB/SIMULINK are presented t0 verify the perf0rmance 0f the Five-level Multilevel Inverter

The Operating Improvement of the Supply Source and the Optimization of PWM Control

2015 ◽  
Vol 6 (3) ◽  
pp. 603
Author(s):  
Farouk Hadj Benali ◽  
Fouad Azzouz ◽  
Ghalem Bachir
Keyword(s):  
Output Voltage ◽  
Control Strategies ◽  
Input Voltage ◽  
Multilevel Inverter ◽  
Pwm Control ◽  
Supply Source ◽  
Multilevel Inverters ◽  
Control Techniques ◽  
Voltage Performance

In this paper the operating improvement of the supply source and the optimization of PWM control are proposed. A comparison (based on the better operating in terms of input voltage) between the multilevel inverters (NPC multilevel inverter and H bridge inverter) is studied. Then two control strategies (the SPWM and the suboptimal PWM) are applied to the multilevel inverter which has the better voltage performance. At last a comparison between these two control techniques based on two essential points, the THD and the output voltage value. A comparison between our results and results taken from literature is also presented in this paper. Simulations are carried out using PSIM environment.

scholarly journals THD Analysis of a Seven, Nine, and Eleven Level Cascaded H-Bridge Multilevel Inverter for Different Loads

2020 ◽  
Vol 14 (4) ◽  
pp. 514-523
Author(s):  
Manoj Kumar Sahu ◽  
Madhusmita Biswal ◽  
Jagan Mohana Rao Malla
Keyword(s):  
Harmonic Distortion ◽  
Harmonic Spectrum ◽  
Multilevel Inverter ◽  
Total Harmonic Distortion ◽  
Analytical Analysis ◽  
Matlab Simulink ◽  
Multilevel Inverters ◽  
Proposed Model ◽  
Multicarrier Pwm

A multilevel inverter is implemented for generating the required staircase AC voltage of output from various steps of voltages of DC sources. The multilevel inverter gives a better harmonic spectrum and a compatible quality of output. This article delves into an analytical analysis of the total harmonic distortion (THD) of different multilevel inverters which employ a multicarrier PWM technique. This technique is implemented for operating the switches at their respective angle of conduction. This paper deals with various cascaded H-Bridge multilevel inverters (CMI) with various loads that are modelled by implementing the MATLAB/Simulink platform. The output gives a better result of the proposed model in terms that it is helpful towards reducing the THD and the losses of switching.

scholarly journals Trends and Challenges in Multi-Level Inverter with Reduced Switches

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 368
Author(s):  
Ganesh Kumar Srinivasan ◽  
Marco Rivera ◽  
Vijayaraja Loganathan ◽  
Dhanasekar Ravikumar ◽  
Balaji Mohan
Keyword(s):  
Induction Motor ◽  
Single Phase ◽  
Input Voltage ◽  
Research Community ◽  
Multilevel Inverter ◽  
Resistive Load ◽  
Multilevel Inverters ◽  
Asymmetric Hybrid ◽  
Multi Level ◽  
Bidirectional Switches

Multilevel inverter had been paid a lot of attention from the academia and research community in recent times due to its role in high and medium power applications. In this paper, a detailed survey is made on the recently designed multilevel inverter to find the suitability of the inverters for particular applications. Research is performed on various types of multilevel inverters such as: Symmetric, asymmetric, hybrid and modularized multilevel inverter in order to identify the issues in generating more levels at the output. A summary of various issues in multilevel inverter with reduced switch count is provided, so that a novel topology of multilevel inverter can be designed in future. Further, an 81-level switched ladder multilevel inverter using unidirectional and bidirectional switches is designed. Simulation work is carried out using Matlab/Simulink in order to validate the performance of the inverter with change in resistive load and impedance load. The output of the 81-level inverter is fed to a 110 V, 186.5 W single phase induction motor in order to study the characteristics, further speed control of motor is performed by varying the input voltage of the motor and the results are presented.

scholarly journals PWM Technique for Single Phase Asymmetrical Hybrid Multilevel Inverter for Non-linear and Dynamic loads

2019 ◽  
Vol 8 (3) ◽  
pp. 7713-7716
Keyword(s):  
High Frequency ◽  
Single Phase ◽  
Multilevel Inverter ◽  
Voltage Level ◽  
Multilevel Inverters ◽  
Switching Losses ◽  
Different Types ◽  
Source Voltage ◽  
Multi Level

A two level VSI has output voltage either equal to positive or negative source voltage. This inverter has more ripple. In order to reduce the ripple content more number of switches are needed to produce many number of stepped voltage waveform. This improves the quality of power. This switching losses depends on the frequency of operation so when a two level inverter is operated at high frequency, the switching losses are predominant. This limits the use of such inverters. Hence, being replaced by Multilevel inverters. They have attracted academician and industry personal for medium and high-power power control. Such attractive features are available in hybrid multilevel inverter. Hence, these are preferred. They provide multi-level operation by using hybrid sources. Moreover, the number of power electronics components needed are less than conventional CMI for same voltage level. Thus, such inverters have more efficiency. In the proposed techniques, an asymmetrical hybrid multilevel inverter has been simulated using MATLAB Simulink. The results obtained have been presented for three different types of load.

scholarly journals Design and analysis of a novel quasi Z source based asymmetric multilevel inverter for PV applications

2020 ◽  
Vol 11 (3) ◽  
pp. 1368
Author(s):  
Deepa Sankar ◽  
C. A. Babu
Keyword(s):  
High Reliability ◽  
Multilevel Inverter ◽  
Parameter Design ◽  
Voltage Gain ◽  
High Quality ◽  
Theoretical Concepts ◽  
Dc Voltage ◽  
Photovoltaic Application ◽  
High Voltage Gain ◽  
Filter Size

A novel Quasi Z source (QZS) based Asymmetric Multilevel Inverter for Photovoltaic application is proposed in this paper. It consists of an Impedance source-based dc-dc converter and Asymmetric Multilevel Inverter (AMLI). QZS network can buck/boost the input DC voltage eliminating separate DC-DC boost converter. MLI topology with reduced switches and DC input provide high quality output with large levels. DC input magnitude of the inverter is based on an algorithm. The system ensures high voltage gain, low switching stress, lessened gate circuitry, high reliability and better harmonic profile. Low THD values ensures reduced filter size and hence cost. The theoretical concepts and parameter design of the proposed topology is illustrated in detail. The performance analysis is verified using Matlab/Simulink environment.

scholarly journals High Step-up Modular Switched-Capacitor DC-DC Converter with Fault Tolerance Capability

2018 ◽  
Author(s):  
Zhengzhao He ◽  
Tiejiang Yuan ◽  
Wenping Cao ◽  
Zhengyu Lin
Keyword(s):  
Fault Tolerance ◽  
High Voltage ◽  
Input Voltage ◽  
Voltage Regulation ◽  
Normal Operation ◽  
Duty Ratio ◽  
Switched Capacitor ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
Fault Mode

A modular switched-capacitor (SC) DC-DC converter (MSCC) is introduced in this paper. It is designed to boost a low input voltage to a high voltage level and can be applied for photovoltaics and electric vehicles. This topology has high extensibility for high voltage gain output. The merits of the converters also lie in the fault tolerance operation and the voltage regulation with a minimum change in the duty ratio. Those features are built in when designing the modules and then integrating these into the DC-DC converter. Converter performance including voltage gain, voltage and current stress are focused and tested. The converter is modelled analytically, and its control algorithm is analyzed in detailed. Both simulation and experiment are carried out to verify the topology under normal operation and fault mode operation.

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