A New and Modular Back-to-Back Connected T-Type Inverter for Minimum Number of Power Devices, TSV, and Cost Factor

Mahato, Bidyut; Majumdar, Saikat; Paul, Samrat; Pal, Pradipta Kumar; Jana, Kartick Chandra

doi:10.1080/02564602.2020.1860838

Cited by 8 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The higher the switching frequency, the larger the THD, and the associated setbacks relate to a reducing of the fundamental component of the output voltage and consequently cause an increase in the current drawn by the utility, resulting in it being rated. In [12][13][14][15], studies of B2B power converters were presented that used different switching techniques to reduce the problems of harmonic distortion of high frequencies, concluding that if it operates at high switching frequencies, the power converter efficiency drops to 85%.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Validation of the Switching Techniques Applied to Back-to-Back Power Converter Connected to a DFIG-Based Wind Turbine for Harmonic Analysis

et al. 2021

View full text Add to dashboard Cite

Most power quality problems for electrical grids connected to Doubly-Fed Induction Generators (DFIGs) include flicker, variations of the RMS voltage profile, and injected harmonics because of switching in power converters. These converters have different topologies with the back-to-back (B2B) topology being the most exploited in high-powered three-phase systems. Therefore, in this article a model of a DFIG connected to the B2B power converter is proposed to which different switching techniques are implemented for interharmonic propagation studies. The switching techniques that are implemented include the Sinusoidal PWM (SPWM), the third harmonic injection PWM (THIPWM), and the space vector PWM (SVPWM), to reduce the Total Harmonic Distortion (THD) index of voltage and current in both windings of the machine. MATLAB-Simulink® software is used for modeling and simulating the B2B power converter and the switching techniques. The proposed model is validated with an experimental prototype that includes a 3-kW DFIG, a 10 HP motor, a gear-box with a transmission ratio of 4.5: 1, a B2B power converter, and a three-phase transformer connecting the system to the electrical grid. Finally, it is shown that the results obtained from the experimental tests corroborate the correct operation of the proposed model.

show abstract

Section: Introductionmentioning

confidence: 99%

Modeling and Validation of the Switching Techniques Applied to Back-to-Back Power Converter Connected to a DFIG-Based Wind Turbine for Harmonic Analysis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The higher voltage stresses increase the total losses of the system. The topologies are modified T-type inverters well developed with fewer switches in previous works, [16][17][18] as the switching stresses of the switches are very high, the rating of the switches required is also high. These high-rated switches increase the overall cost of the system.…”

mentioning

confidence: 99%

A novel reduced switch single‐phase five‐level inverter

Bogineni

Nakka

2022

Circuit Theory & Apps

View full text Add to dashboard Cite

Conventional multilevel inverters (MLI) incorporate many independent dc sources and switches, which adds to the overall system's cost and complexity. This article presents a detailed analysis of a reduced switch single‐phase five‐level inverter for medium‐ and high‐power applications. The comparison of the proposed topology with traditional and recently developed MLI topologies shows that the topology proposed has a smaller number of circuit elements, isolated dc sources, and voltage stress of half of the supply voltage on 50% of switches. Reducing the number of components and sources reduces the complexity and total cost of the inverter. These reduced switches voltage stresses increase the overall system reliability. The MATLAB/SIMULINK simulations for different load changes were carried out for analysis in software mode. The scaled‐down prototype is used for the validation of simulation analysis. The components comparison was also carried out to list the advantages of this topology over other MLI configurations.

show abstract

Non‐isolated single‐phase inverter based on an autotransformer for low‐power applications

Corrêa

Andrade

Morais

et al. 2021

Circuit Theory & Apps

View full text Add to dashboard Cite

This work presents a non-isolated single-phase voltage-source inverter (VSI) topology using an autotransformer to provide an alternating current (AC) output voltage whose maximum peak value can be up to twice that obtained with the conventional half-bridge and full-bridge inverters. Prominent advantages include a simple structure with low component count, as well as the fact that both switches are connected to a same reference node, as there is no need for isolated driver circuitry. As a possible drawback, the maximum voltage across the switches is equal to twice the input voltage, but it is still reasonable to state that the topology is adequate for low-power, low-input-voltage applications. A thorough qualitative and quantitative analysis is presented, from which it is possible to derive a consistent design procedure. An experimental prototype with a rated power of 100 W, switching frequency of 20 kHz, direct current (DC) input voltage of 35 V, and rms output voltage of 37 V is developed to validate the theoretical assumptions.

show abstract

A New and Modular Back-to-Back Connected T-Type Inverter for Minimum Number of Power Devices, TSV, and Cost Factor

Cited by 8 publications

References 46 publications

Modeling and Validation of the Switching Techniques Applied to Back-to-Back Power Converter Connected to a DFIG-Based Wind Turbine for Harmonic Analysis

Modeling and Validation of the Switching Techniques Applied to Back-to-Back Power Converter Connected to a DFIG-Based Wind Turbine for Harmonic Analysis

A novel reduced switch single‐phase five‐level inverter

Non‐isolated single‐phase inverter based on an autotransformer for low‐power applications

Contact Info

Product

Resources

About