A new single-phase multilevel converter topology with reduced power electronic devices, voltage rating on switches, and power losses

2018 ◽  
Vol 46 (7) ◽  
pp. 1372-1391 ◽  
Author(s):  
Rasoul Shalchi Alishah ◽  
Seyed Hossein Hosseini ◽  
Ebrahim Babaei ◽  
Mehran Sabahi
Keyword(s):  
Single Phase ◽  
Electronic Devices ◽  
Power Electronic ◽  
Power Losses ◽  
Multilevel Converter ◽  
Converter Topology

A New Generalized Switched-ladder Multilevel Converter Topology with Reduced Power Electronic Devices

2021 ◽  
Author(s):  
Rasoul Shalchi Alishah ◽  
Kent Bertilsson ◽  
Naser Vosoughi ◽  
Seyed Hossein Hosseini ◽  
Amirreza Zarrin Gharehkoushan ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Power Electronic ◽  
Multilevel Converter ◽  
Converter Topology

An Improved Symmetric H-Bridge Multilevel Converter Topology; An Attempt to Reduce Power Losses

2018 ◽  
Vol 27 (12) ◽  
pp. 1850187 ◽  
Author(s):  
Rasoul Shalchi Alishah ◽  
Seyed Hossein Hosseini ◽  
Ebrahim Babaei ◽  
Mehran Sabahi ◽  
Jaber Fallah Ardashir
Keyword(s):  
Harmonic Distortion ◽  
Power Losses ◽  
Multilevel Converter ◽  
Switching Losses ◽  
Current Path ◽  
Comparison Results ◽  
Converter Topology ◽  
Gate Driver ◽  
Level Converter ◽  
Symmetric Structures

In this paper, a new structure for multilevel converter based on improved H-bridge converter is presented. The proposed topology is a symmetric topology since the values of all voltage sources are equal. The proposed symmetric structure is a general topology which can be extended for any number of voltage levels at output voltage waveform to obtain the least value of total harmonic distortion (THD). Reduction of switching losses, conduction losses, the number of on-state switches in the current path, utilized DC voltage sources, and gate driver circuits are the main advantages of proposed symmetric structures in comparison with other symmetric topologies. All mathematical analysis on the proposed structure is presented in terms of power losses and maximum blocked voltage by switches. The comparison results with other recently presented symmetric topologies and traditional multilevel converter structures are provided. Experimental results for a thirteen-level converter based on presented structure are provided to validate the practicality of the suggested multilevel structure.

scholarly journals Impact of harmonic distortion on the supraharmonic emission of pulsewidth modulated single-phase power electronic devices

2021 ◽  
Vol 19 ◽  
pp. 577-582
Author(s):  
E. Kaufhold ◽  
◽  
J. Meyer ◽  
P. Schegner
Keyword(s):  
Single Phase ◽  
Electronic Devices ◽  
Harmonic Distortion ◽  
Power Electronic ◽  
Frequency Range ◽  
Pulse Width Modulated ◽  
Current State ◽  
Photovoltaic Applications ◽  
Frequency Coupling ◽  
Single Phase Inverter

This study demonstrates the frequency coupling in pulse width modulated (PWM) single-phase converters and inverters. As current state of the art, the harmonic frequency range, e.g. from fundamental frequency up to 2 kHz, is typically assessed separately from the so-called supraharmonic frequency range, i.e. above 2 kHz up to 150 kHz. The frequency coupling between the harmonic and supraharmonic frequency range has not been thoroughly studied and is currently often neglected in the design process as well as for the analysis of the emission of power electronic devices. The aim of this study is to analyse the behaviour of the frequency coupling between the harmonic and the supraharmonic range. In addition, laboratory measurements of a commercially available single-phase inverter for photovoltaic applications are shown to verify the findings.

A Novel Generalized Topology for Multi-level Inverter with Switched Series-Parallel DC Sources

2016 ◽  
Vol 4 (1) ◽  
pp. 41 ◽  
Author(s):  
S. Sridhar ◽  
P. Satish Kumar ◽  
M. Susham
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Electronic Devices ◽  
Software Tool ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Dc Voltage ◽  
Minimum Number ◽  
In Series ◽  
Multi Level

<p>This paper presents a novel topology of Single-phase multilevel inverter for low and high power applications. It consists of polarity (Level) generation circuit and H Bridge to generate both positive and negative polarities. The proposed topology can produce more output voltage levels by switching dc voltage sources in series and parallel. The proposed topology utilizes minimum number of power electronic devices which leads to the reduction of cost, size, and weight low and consumes low power which improves the efficiency. Switching pulses are generated using Phase disposition (PD) pulse width modulation technique. Finally the effectiveness of the proposed topology is verified using MATLAB/SIMULINK software tool. 7level asymmetrical multilevel inverter prototype hardware is prepared to support the proposed topology to verify the effectiveness and its validity.</p>

Switched‐diode structure for multilevel converter with reduced number of power electronic devices

2014 ◽  
Vol 7 (3) ◽  
pp. 648-656 ◽  
Author(s):  
Rasoul Shalchi Alishah ◽  
Daryoosh Nazarpour ◽  
Seyyed Hossein Hosseini ◽  
Mehran Sabahi
Keyword(s):  
Electronic Devices ◽  
Diode Structure ◽  
Power Electronic ◽  
Multilevel Converter
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