scholarly journals Prototipe Power Supply Gate driver untuk Multilevel Inverter dengan Menggunakan Flyback Converter Multi Output

2020 ◽  
Vol 19 (01) ◽  
pp. 33-42
Author(s):  
Novie Ayub Windarko ◽  
Akhmad Puryanto ◽  
Rachma Prilian Eviningsih ◽  
Moh. Zaenal Efendi ◽  
Eka Prasetyono ◽  
...  
Keyword(s):  
Power Supply ◽  
Multilevel Inverter ◽  
Flyback Converter ◽  
Turn On ◽  
Gate Driver ◽  
Multi Level ◽  
Switching Devices

Dengan perkembangan konverter elektronika daya, kebutuhan untuk memperkecil ukuran dan keandalan semakin meningkat. Dengan meningkatnya frekuensi switching pada konverter, maka dv/dt yang tinggi dapat menyebabkan kesalahan dalam turn-on ataupun turn-off switching devices. Masalah-masalah tersebut dapat diatasi dengan menerapkan tegangan bias negatif untuk melakukan turn-off switching devices. Makalah ini mengusulkan prototipe power supply gate driver yang dikhususkan untuk Multi Level Inverter (MLI). Sebuah prototipe power supply gate driver yang menggunakan satu unit konverter flyback dengan multi output untuk tegangan bias positif dan negatif, serta terisolasi galvanis sebanyak switching devices MLI. Dengan menggunakan topologi dasar flyback maka konverter ini memiliki isolasi galvanis melalui trafo frekuensi tinggi. Dari hasil eksperimen proses switching bisa berubah dari kondisi dari on menuju off dan dari off menuju on bisa berjalan secara sempurna.

A Modulation Scheme for Floating Source Multilevel Inverter Topology with Increased Number of Output Levels

2016 ◽  
Vol 6 (5) ◽  
pp. 1985 ◽  
Author(s):  
Hussain M. Bassi
Keyword(s):  
Substantial Reduction ◽  
Multilevel Inverter ◽  
Modulation Scheme ◽  
Sinusoidal Wave ◽  
Switching Scheme ◽  
Multilevel Inverters ◽  
Modulation Technique ◽  
Multi Level ◽  
Inverter Topology ◽  
Switching Devices

<p>This paper presented and studied a new switching scheme for floating source multilevel inverters to produce more levels with the same number of switching devices. In the proposed scheme, the function of the dc sources, except the inner one, is to build up square wave or blocks that is close in the shape to the desired sinusoidal wave. The job of the inner switching devices is to increase the number of the levels to produce smother sinusoidal wave in the inverter output. This job can be done by adding or subtracting the value of the inner dc source to/from the blocks. The topology used in this paper is based on the conventional floating source multi-level inverter using two legs. This topology and modulation technique show substantial reduction in the total harmonics distortion when the modulation technique is the hybrid method. The performance of the proposed switching scheme in generating more levels has been evaluated by PSCAD/EMTDC simulation.</p>

Novel single phase full bridge inverter formed by floating capacitors

2016 ◽  
Vol 7 (1) ◽  
pp. 193 ◽  
Author(s):  
Prathap Reddy Bhimireddy ◽  
Sreekanth Reddy Kondreddy ◽  
Samba Siva Reddy Beduduri
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Multilevel Inverter ◽  
High Quality ◽  
Switching Losses ◽  
Common Mode Voltage ◽  
Voltage Variation ◽  
Gate Driver

In this paper, a novel single-phase bridge inverter is presented which can generate a more number of voltage levels with reduced number of switches, gate driver circuits and diodes as compare to normal multilevel inverter. Another feature of this inverter is its ability to prodeuce the voltages from a single dc-link power supply which enables back-to-back operation of converter. The proposed inverter with more number of levels can improve power quality, lower switching losses and produce high quality voltage waveforms. Also, the proposed inverter can be operated at all load power factor.The research of the model is done by means of computer simulation with the software MATLAB/SIMULINK. This configuration has very low dv/dt and common-mode voltage variation. Also this inverter is help full for reactive power compensation.

scholarly journals A Modulation Scheme for Floating Source Multilevel Inverter Topology with Increased Number of Output Levels

2016 ◽  
Vol 6 (5) ◽  
pp. 1985
Author(s):  
Hussain M. Bassi
Keyword(s):  
Substantial Reduction ◽  
Multilevel Inverter ◽  
Modulation Scheme ◽  
Sinusoidal Wave ◽  
Switching Scheme ◽  
Multilevel Inverters ◽  
Modulation Technique ◽  
Multi Level ◽  
Inverter Topology ◽  
Switching Devices

<p>This paper presented and studied a new switching scheme for floating source multilevel inverters to produce more levels with the same number of switching devices. In the proposed scheme, the function of the dc sources, except the inner one, is to build up square wave or blocks that is close in the shape to the desired sinusoidal wave. The job of the inner switching devices is to increase the number of the levels to produce smother sinusoidal wave in the inverter output. This job can be done by adding or subtracting the value of the inner dc source to/from the blocks. The topology used in this paper is based on the conventional floating source multi-level inverter using two legs. This topology and modulation technique show substantial reduction in the total harmonics distortion when the modulation technique is the hybrid method. The performance of the proposed switching scheme in generating more levels has been evaluated by PSCAD/EMTDC simulation.</p>

scholarly journals An Optimized Multilevel Inverter Topology with Symmetrical and Asymmetrical DC Sources for Sustainable Energy Applications

2020 ◽  
Vol 10 (3) ◽  
pp. 5719-5723
Author(s):  
B. M. Manjunatha ◽  
S. Nagaraja Rao ◽  
A. Suresh Kumar ◽  
K. Shaguftha Zabeen ◽  
S. Lakshminarayanan ◽  
...  
Keyword(s):  
Power Quality ◽  
Sustainable Energy ◽  
Multilevel Inverter ◽  
Energy Applications ◽  
Grid Interface ◽  
Linear Load ◽  
Multi Level ◽  
Simulation Results ◽  
Inverter Topology ◽  
Switching Devices

This paper proposes an optimized Multi-Level Inverter (MLI) topology with symmetrical and asymmetrical DC sources for sustainable energy applications. The proposed MLI has optimized components to reduce size, cost, and installation area in comparison with traditional MLIs. It also improves output power quality by reducing harmonics in the stepped output, and hence it can be used for sustainable energy applications with a grid interface. The proposed inverter is equipped with six switching devices, one clamping diode, and two DC sources. It produces a five-level stepped output when using symmetrical DC sources and a seven-level stepped output when using asymmetrical DC sources. In this topology, the six switching devices are divided into two units, namely the level generator and the polarity generator units, the switches used in the level generator are responsible for producing the required number of levels in the form of rectified stepped output and the switches used in the polarity generator are responsible for converting the rectified stepped waveform to stepped AC output. The simulation results verify the operation of the MLI when fed with linear load with symmetrical and asymmetrical DC sources, and the experimental output results are presented for validation.

Seven Levels Symmetric H-bridge Multilevel Inverter with Less Number of Switching Devices

2017 ◽  
Vol 8 (1) ◽  
pp. 109 ◽  
Author(s):  
Megat Azahari Chulan ◽  
Mohd Junaidi Abdul Aziz ◽  
Abdul Halim Mohammed Yatim ◽  
Mohd Zaki Daud
Keyword(s):  
Electromagnetic Interference ◽  
High Efficiency ◽  
Multilevel Inverter ◽  
Power Installation ◽  
Development Cost ◽  
Time Simulation ◽  
Gate Driver ◽  
Circuit Development ◽  
Cascaded Multilevel Inverter ◽  
Switching Devices

This paper proposes a new topology of a cascaded multilevel inverter that utilises less number of switches than the conventional topology. The proposed topology maintains the performance of conventional 7-levels output multilevel inverter while reducing the loss of power, installation area, converter size as well as development cost. The circuit development consists of six switches and one diode. With less number of switching devices in the circuit, there will be a reduction in the gate driver circuits and also in effect fewer switches required for specific intervals of time. Simulation works have been conducted to validate the proposed MLI topology. It is envisaged that the proposed topology can be applied for the system that requires high efficiency and a low electromagnetic interference.

scholarly journals Flyback Converter for Solid-State Lighting Applications with Partial Energy Processing

Electronics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 60
Author(s):  
Mario Ponce-Silva ◽  
Daniel Salazar-Pérez ◽  
Oscar Miguel Rodríguez-Benítez ◽  
Luis Gerardo Vela-Valdés ◽  
Abraham Claudio-Sánchez ◽  
...  
Keyword(s):  
Solid State ◽  
Power Supply ◽  
Design Methodology ◽  
Low Frequency ◽  
Solid State Lighting ◽  
Voltage Source ◽  
Flyback Converter ◽  
Partial Energy ◽  
In Series ◽  
Energy Processing

The main contribution of this paper is to show a new AC/DC converter based on the rearrangement of the flyback converter. The proposed circuit only manages part of the energy and the rest is delivered directly from the source to the load. Therefore, with the new topology, the efficiency is increased, and the stress of the components is reduced. The rearrangement consist of the secondary of the flyback is placed in parallel with the load, and this arrangement is connected in series with the primary side and the rectified voltage source. The re-arranged flyback is only a reductive topology and with no magnetic isolation. It was studied as a power supply for LEDs. A low frequency averaged analysis (LFAA) was used to determine the behavior of the proposed circuit and an equivalent circuit much easier to analyze was obtained. To validate the theoretical analysis, a design methodology was developed for the re-arranged flyback converter. The designed circuit was implemented in a 10 W prototype. Experimental results showed that the converter has a THDi = 21.7% and a PF = 0.9686.

scholarly journals Multi-level characteristics of TiOx transparent non-volatile resistive switching device by embedding SiO2 nanoparticles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sera Kwon ◽  
Min-Jung Kim ◽  
Kwun-Bum Chung
Keyword(s):  
Resistive Switching ◽  
High Performance ◽  
Sio2 Nanoparticles ◽  
Visible Range ◽  
Resistive State ◽  
Switching Device ◽  
Structural Density ◽  
Multi Level ◽  
Switching Characteristics ◽  
Switching Devices

AbstractTiOx-based resistive switching devices have recently attracted attention as a promising candidate for next-generation non-volatile memory devices. A number of studies have attempted to increase the structural density of resistive switching devices. The fabrication of a multi-level switching device is a feasible method for increasing the density of the memory cell. Herein, we attempt to obtain a non-volatile multi-level switching memory device that is highly transparent by embedding SiO2 nanoparticles (NPs) into the TiOx matrix (TiOx@SiO2 NPs). The fully transparent resistive switching device is fabricated with an ITO/TiOx@SiO2 NPs/ITO structure on glass substrate, and it shows transmittance over 95% in the visible range. The TiOx@SiO2 NPs device shows outstanding switching characteristics, such as a high on/off ratio, long retention time, good endurance, and distinguishable multi-level switching. To understand multi-level switching characteristics by adjusting the set voltages, we analyze the switching mechanism in each resistive state. This method represents a promising approach for high-performance non-volatile multi-level memory applications.

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