Analysis of a New Reduced Switch Nine Level Inverter

2016 ◽  
Vol 1 (3) ◽  
pp. 490
Author(s):  
C.R. Balamurugan ◽  
S.P. Natarajan ◽  
R. Bensraj
Keyword(s):  
High Power ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Switching Strategy ◽  
Ac Drives ◽  
Multi Level ◽  
Structural Parts ◽  
The Cost ◽  
Electronic Switches

<p>The multi level inverter system is mostly used in ac drives, when both reduced harmonic contents and high power are required. In this paper a new topology of multilevel inverter is introduced. This type has many steps with less power electronic switches. Due to the less number of switches the cost of the inverter is very less and also less installation area is required. Firstly, we describe briefly the structural parts of the inverter then switching strategy and operational principles of the proposed inverter are explained and operational topologies are given. Simulation is performed using MATLAB SIMULINK. Various PWM techniques are applied to the circuit such as PDPWM, PODPWM, APODPWM, VFPWM and COPWM. By comparing among the PWM techniques, PODPWM provide the less THD value and COPWM provide a higher fundamental RMS output voltage.</p><p> </p>

Performance Evaluation of 3Φ Asymmetrical MLI with Reduced Switch Count

2016 ◽  
Vol 3 (3) ◽  
pp. 671
Author(s):  
Chinnapettai Ramalingam Balamurugan ◽  
S.P. Natarajan ◽  
T.S. Anandhi
Keyword(s):  
Performance Evaluation ◽  
High Power ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Matlab Simulink ◽  
Ac Drives ◽  
Three Phase ◽  
Multi Level ◽  
The Cost ◽  
Switching Strategies

The multi level inverter system is habitually exploited in AC drives, when both reduced harmonic contents and high power are required. In this paper, a new topology for three phase asymmetrical multilevel inverter employing reduced number of switches is introduced. With less number of switches, the cost, space and weight of the circuit are automatically reduced. This paper discusses the new topology, the switching strategies and the operational principles of the chosen inverter. Simulation is carried out using MATLAB-SIMULINK. Various conventional PWM techniques that are appropriate to the chosen circuit such as PDPWM, PODPWM, APODPWM, VFPWM and COPWM are employed in this work. COPWM technique affords the less THD value and also affords a higher fundamental RMS output voltage.

scholarly journals Non-conventional Cascade Multilevel Inverter with Lower Number of Switches by Using Multilevel PWM

2021 ◽  
Vol 17 (1) ◽  
pp. 1-13
Author(s):  
Adala Abdali ◽  
Ali Abdulabbas ◽  
Habeeb Nekad
Keyword(s):  
High Voltage ◽  
High Power ◽  
Power Loss ◽  
Output Voltage ◽  
Lower Number ◽  
Multilevel Inverter ◽  
Three Phase ◽  
Multi Level ◽  
Simulation Results ◽  
Circuit Configuration

The multilevel inverter is attracting the specialist in medium and high voltage applications, among its types, the cascade H bridge Multi-Level Inverter (MLI), commonly used for high power and high voltage applications. The main advantage of the conventional cascade (MLI) is generated a large number of output voltage levels but it demands a large number of components that produce complexity in the control circuit, and high cost. Along these lines, this paper presents a brief about the non-conventional cascade multilevel topologies that can produce a high number of output voltage levels with the least components. The non-conventional cascade (MLI) in this paper was built to reduce the number of switches, simplify the circuit configuration, uncomplicated control, and minimize the system cost. Besides, it reduces THD and increases efficiency. Two topologies of non-conventional cascade MLI three phase, the Nine level and Seventeen level are presented. The PWM technique is used to control the switches. The simulation results show a better performance for both topologies. THD, the power loss and the efficiency of the two topologies are calculated and drawn to the different values of the Modulation index (ma).

scholarly journals Hardware Implementation of an Enhanced Seven Level H Bridge Inverter with Reduced Switch Configuration

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1170-1175
Keyword(s):  
Hardware Implementation ◽  
Focal Point ◽  
Renewable Energy Sources ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Power Demand ◽  
Multi Level ◽  
Voltaic Cell ◽  
Sustainable Power ◽  
Electronic Switches

There are various boundaries in extracting power through Renewable energy sources. To reduce the insufficiency and high power demand we need to look up power extracting Techniques. To take out power through divergent sustainable power source assets for example solar energy, Photo Voltaic cell, Wind energy, Multilevel inverter is used .It orchestrates the preferred ac production from a number of dc input sources. The primary focal point of the paper is develop the productivity of level inverter and get better the nature of yield voltage by way of diminish number of power electronic switches. Here MOSFETs are used as switches. In this Paper, Simulation along with hardware design of 7-level cascaded Multi-level inverter and reduced switch multilevel inverter are presented.

scholarly journals Fault Investigation in Cascaded H-Bridge Multilevel Inverter through Fast Fourier Transform and Artificial Neural Network Approach

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1299 ◽  
Author(s):  
G. Kiran Kumar ◽  
E. Parimalasundar ◽  
D. Elangovan ◽  
P. Sanjeevikumar ◽  
Francesco Lannuzzo ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Output Voltage ◽  
Diagnostic System ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Multilevel Inverters ◽  
Electronic Switches

In recent times, multilevel inverters are used as a high priority in many sizeable industrial drive applications. However, the reliability and performance of multilevel inverters are affected by the failure of power electronic switches. In this paper, the failure of power electronic switches of multilevel inverters is identified with the help of a high-performance diagnostic system during the open switch and low condition. Experimental and simulation analysis was carried out on five levels cascaded h-bridge multilevel inverter, and its output voltage waveforms were synthesized at different switch fault cases and different modulation index parameter values. Salient frequency-domain features of the output voltage signal were extracted using a Fast Fourier Transform decomposition technique. The real-time work of the proposed fault diagnostic system was implemented through the LabVIEW software. The Offline Artificial neural network was trained using the MATLAB software, and the overall system parameters were transferred to the LabVIEW real-time system. With the proposed method, it is possible to identify the individual faulty switch of multilevel inverters successfully.

scholarly journals The multilevel inverter with clamped-diode

2019 ◽  
Vol 14 (3) ◽  
pp. 1189
Author(s):  
Trong-Thang Nguyen
Keyword(s):  
Numerical Simulation ◽  
Circuit Design ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Control Circuit ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
And Control

<p>In this study, the author analyzes the advantages and disadvantages of multi-level inverter compared to the traditional two-level inverter and then chose the suitable inverter. Specifically, the author analyzes and designs the three-level inverter, including the power circuit design and control circuit design. All designs are verified through the numerical simulation on Matlab. The results show that even though the three-level inverter has a low number of switches (only 12 switches), but the quality is very good: the total harmonic distortion is small; the output voltage always follows the reference voltage.</p>

scholarly journals MATHEMATICAL ALGORITHM OF FUZZY LOGIC CONTROLLER FOR MULTILEVEL INVERTER CREATING VERTICAL DIVIDED VOLTAGE

2019 ◽  
Vol 59 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Erol Can
Keyword(s):  
Mathematical Model ◽  
Fuzzy Logic ◽  
Fuzzy Logic Control ◽  
Pid Controller ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Boost Converter ◽  
Multilevel Inverter ◽  
Logic Control ◽  
Multi Level

A 9-level inverter with a boost converter has been controlled with a fuzzy logic controller and a PID controller for regulating output voltage applications on resistive (R) and inductive (L), capacitance (C). The mathematical model of this system is created according to the fuzzy logic controlling new high multilevel inverter with a boost converter. The DC-DC boost converter and the multi-level inverter are designed and explained, when creating a mathematical model after a linear pulse width modulation (LPWM), it is preferred to operate the boost multi-level inverter. The fuzzy logic control and the PID control are used to manage the LPWM that allows the switches to operate. The fuzzy logic algorithm is presented by giving necessary mathematical equations that have second-degree differential equations for the fuzzy logic controller. After that, the fuzzy logic controller is set up in the 9-level inverter. The proposed model runs on different membership positions of the triangles at the fuzzy logic controller after testing the PID controller. After the output voltage of the converter, the output voltage of the inverter and the output current of the inverter are observed at the MATLAB SIMULINK, the obtained results are analysed and compared. The results show the demanded performance of the inverter and approve the contribution of the fuzzy logic control on multi-level inverter circuits.

scholarly journals Realization of a Generalized Switched-Capacitor Multilevel Inverter Topology with Less Switch Requirement

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1556 ◽  
Author(s):  
Anzar Ahmad ◽  
MU Anas ◽  
Adil Sarwar ◽  
Mohammad Zaid ◽  
Mohd Tariq ◽  
...  
Keyword(s):  
Output Voltage ◽  
Multilevel Inverter ◽  
Basic Unit ◽  
Modulation Scheme ◽  
Switched Capacitor ◽  
Level Control ◽  
Active Components ◽  
Proposed Model ◽  
Environment Simulation ◽  
The Cost

Conventional multilevel inverter topologies like neutral point clamped (NPC), flying capacitor (FC), and cascade H bridge (CHB) are employed in the industry but require a large number of switches and passive and active components for the generation of a higher number of voltage levels. Consequently, the cost and complexity of the inverter increases. In this work, the basic unit of a switched capacitor topology was generalized utilizing a cascaded H-bridge structure for realizing a switched-capacitor multilevel inverter (SCMLI). The proposed generalized MLI can generate a significant number of output voltage levels with a lower number of components. The operation of symmetric and asymmetric configurations was shown with 13 and 31 level output voltage generation, respectively. Self-capacitor voltage balancing and boosting capability are the key features of the proposed SCMLI structure. The nearest level control modulation scheme was employed for controlling and regulating the output voltage. Based on the longest discharging time, the optimum value of capacitance was also calculated. A generalized formula for the generation of higher voltage levels was also derived. The proposed model was simulated in the MATLAB®/Simulink 2016a environment. Simulation results were validated with the hardware implementation.

Research on the High Frequency Realization of High-Power Inverter

2011 ◽  
Vol 383-390 ◽  
pp. 1077-1083
Author(s):  
Run Hua Liu ◽  
Gang Wang
Keyword(s):  
High Power ◽  
High Frequency ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Soft Switching ◽  
Multilevel Inverter ◽  
Switching Frequency ◽  
Switching Losses ◽  
Simulation And Experiment

The paper presents the inverter method which based on cascade multilevel inverter and MOSFET-assisted soft-switching of IGBT and modulation strategy against the double requirement of high-power inverter and high frequency. The method can effectively improve the output voltage, reduce harmonic distortion and switching losses, improve the switching frequency and meet the double requirement of the high-power inverter and high frequency. The method proved to be feasible by simulation and experiment.

scholarly journals Фотовольтаические характеристики светодиодов с двумя последовательными p-n-переходами

2021 ◽  
Vol 47 (1) ◽  
pp. 47
Author(s):  
А.А. Соколовский ◽  
В.В. Моисеев
Keyword(s):  
Low Power ◽  
Spectral Range ◽  
High Power ◽  
Power Supply ◽  
Output Voltage ◽  
Optical Radiation ◽  
Electronic Devices ◽  
Power Electronic ◽  
Direct Power ◽  
Photovoltaic Characteristics

In this work, we investigated the photovoltaic characteristics of high-power IR LEDs manufactured by OSRAM GmbH based on structures with two vertically stacked p-n junctions. The spectral range of operation of PVTs based on LEDs with different radiation wavelengths was determined, and it was shown that the efficiency of photovoltaic conversion in them reaches more than 30% at a wavelength of 808 nm. The high (up to 2.6 V) output voltage of such converters allows them to be used for direct power supply of low-power electronic devices with optical radiation.

scholarly journals Solar Photovoltaic System-Based Reduced Switch Multilevel Inverter for Improved Power Quality

2022 ◽  
Vol 4 (1) ◽  
pp. 1-13
Author(s):  
Madhu Andela ◽  
Ahmmadhussain Shaik ◽  
Saicharan Beemagoni ◽  
Vishal Kurimilla ◽  
Rajagopal Veramalla ◽  
...  
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Switching Losses ◽  
Minimum Number ◽  
Multi Level ◽  
Solar Photovoltaic System

This paper deals with a reduced switch multi-level inverter for the solar photovoltaic system-based 127-level multi-level inverter. The proposed technique uses the minimum number of switches to achieve the maximum steps in staircase AC output voltage when compared to the flying capacitor multi-level inverter, cascaded type multilevel inverter and diode clamped multi-level inverter. The use of a minimum number of switches decreases the cost of the system. To eliminate the switching losses, in this topology a square wave switch is used instead of pulse width modulation. Thereby the total harmonic distortion (THD) and harmonics have been reduced in the pulsating AC output voltage waveform. The performance of 127-level MLI is compared with 15 level, 31-level and 63-level multilevel inverters. The outcomes of the solar photovoltaic system-based 127-level multi-level inverter have been simulated in a MATLAB R2009b environment.

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