Analysis and Experimentation of a Three Phase Asymmetric Cascaded Multilevel Inverter for Electric Vehicles

2013 ◽  
Vol 768 ◽  
pp. 231-237
Author(s):  
R. Seyezhai ◽  
K. Radha Sree ◽  
K. Sivapathi ◽  
V. Vardhaman
Keyword(s):  
Electric Vehicles ◽  
Carrier Phase ◽  
Multilevel Inverter ◽  
Variable Frequency ◽  
Multilevel Inverters ◽  
Flexible Ac Transmission ◽  
Switching Losses ◽  
Three Phase ◽  
Ac Transmission ◽  
Cascaded Multilevel Inverter

Multilevel inverters have been gaining immense popularity in high power applications such as Electric vehicles, Flexible AC Transmission Systems etc. This paper focuses on an asymmetric cascaded multilevel inverter employing the variable frequency carrier phase shifted PWM technique. The major advantage of this strategy is that it aids in balancing the switch utilization. The proposed strategy was found to have lower THD and switching losses when compared to the conventional strategies. The simulation was performed using MATLAB/Simulink and the results were verified experimentally.

scholarly journals Comparative analysis of various multilevel inverter symmetrical topologies with minimum number of components

2018 ◽  
Vol 7 (1.8) ◽  
pp. 77
Author(s):  
Ali Qasim Hussein Algburi ◽  
P V. Ramana Rao
Keyword(s):  
Oil And Gas ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Minimum Number ◽  
Bridge Type ◽  
Comparison Table ◽  
Ac Transmission

Multilevel inverters (MLI) are frequently used in different fields like, oil and gas sectors, installations of power supply, high power and medium voltage applications and in FACTS (flexible AC transmission system) devices to improve power quality. Lot of topologies has been developed in the literature regarding multilevel inverters such as diode clamped type, flying capacitor type and cascaded H-bridge type multilevel inverters. However, several challenges are being faced while implementing these topologies like more number of switches, more losses and cost. The optimized construction of multilevel inverter is to get more number of levels with less number of switches and low total harmonic distortion. In this paper, three different existing multilevel inverter topologies have been considered and analyzed for five level output voltage. A comparison table is given for number of switches, extra diodes and voltage sources. The total work is carried by using Matlab/simulink software and results are presented.

A Comparative Studies of Cascaded Multilevel Inverters Having Reduced Number of Switches with R and RL-Load

2017 ◽  
Vol 8 (1) ◽  
pp. 40
Author(s):  
Lipika Nanda ◽  
Abhijit Dasgupta ◽  
Ullash Kumar Rout
Keyword(s):  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Power Sources ◽  
Multilevel Inverters ◽  
Switching Losses ◽  
Dc Power ◽  
Modulation Techniques ◽  
Power Application ◽  
Cascaded Multilevel Inverter

<p>Multilevel inverter offers many benefits for high power application compavered to conventional cascaded Multilevel Inverter topology.This paper presents Symmetric CMLI using variable frequency carrier based pulse width modulation techniques. The proposed topology reduces total harmonic distortion and reduced switching losses for seven level inverter. The simulation study of the proposed topology has been carried out in MATLAB/SIMULINK. The main objective of this paper is to achieve number of levels of MLI with reduced number of switches and DC power sources compared to conventional topology.</p>

Selective harmonic elimination pulse width modulation for three-phase cascaded multilevel inverter

2021 ◽  
Author(s):  
Baharuddin Ismail ◽  
Muzamir Isa ◽  
M. Z. Aikhsan ◽  
M. N. K. H. Rohani ◽  
C. L. Wooi ◽  
...  
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Multilevel Inverter ◽  
Harmonic Elimination ◽  
Three Phase ◽  
Selective Harmonic Elimination ◽  
Cascaded Multilevel Inverter

Cascaded Multilevel Inverter IM Speed-Sensorless Vector Control System Based on MRAS Theory

2013 ◽  
Vol 344 ◽  
pp. 159-163
Author(s):  
Zhen Jun Lin ◽  
Sheng Hua Huang
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
Low Voltage ◽  
Multilevel Inverter ◽  
Speed Sensorless ◽  
Multilevel Inverters ◽  
Sensorless Vector Control ◽  
Simulation And Experiment ◽  
Vector Control System ◽  
Cascaded Multilevel Inverter

Cascaded multilevel inverters could realize high-voltage output based on a series connection of power cells which use standard low-voltage component configurations. This characteristic could achieve high-quality output voltage waveforms and input current waveforms. These merits are made for motor control, especially in the field of speed-sensorless vector control of induction motor based on the theory of MRAS. This paper constructs a simulation system with the help of MATLB/SIMULINK and a system combined cascaded H-bridge multilevel inverter with induction motor with the help of DSP and FPGA. The simulation and experiment results verified the superiority of cascaded multilevel inverter applied on the MRAS speed-sensorless vector control of induction motor.

scholarly journals MATLAB/simulink study of multi-level inverter topologies using minimized quantity of switches

2017 ◽  
Vol 7 (1.5) ◽  
pp. 209
Author(s):  
B.Vijaya Krishna ◽  
B. Venkata Prashanth ◽  
P. Sujatha
Keyword(s):  
Harmonic Distortion ◽  
Pulse Generation ◽  
Multilevel Inverter ◽  
Matlab Simulink ◽  
Multilevel Inverters ◽  
Energy Applications ◽  
Electrical Drives ◽  
Switching Losses ◽  
Trigger Circuit ◽  
Inverter Topology

Multilevel Inverters (MLI) have very good features when compared to Inverters. But using more switches in the conventional configuration will reduce its application in a wider range. For that reason a modified 7-level MLI Topology is presented. This new topology consists of less number of switches that can be reduced to the maximum extent and a separate gate trigger circuit. This will reduce the switching losses, reduce the size of the multilevel inverter, and cost of installation. This new topology can be used in Electrical drives and renewable energy applications. Performance of the new MLI is tested via. Total harmonic distortion. This construction structure of this multilevel inverter topology can also be increased for 9-level, 11-level and so on and simulated by the use of MATLAB/SIMULINK. A separate Carrier Based PWM Technique is used for the pulse generation in this configuration.

Design and Implementation of Three Phase Reversing Voltage Multilevel Inverter

2016 ◽  
Vol 5 (2) ◽  
pp. 59
Author(s):  
G. Vijaykrishna ◽  
Y. Kusumalatha
Keyword(s):  
Induction Motor ◽  
Power Quality ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Design And Implementation ◽  
Switching Losses ◽  
Three Phase ◽  
Voltage Harmonics

This paper examines how a Reversing voltage multilevel inverter (RVMLI) strategy is enforced to develop multilevel inverter fulfilment. This approach has been used SPWM-PD technique to regulate the electrical inverter. It desires numerous less range of carrier signals to deliver gate pulses of switches. Increasing within the levels during this strategy aid in reduction of output voltage harmonics expeditiously and improves power quality at output of the electrical inverter. It wants a lowered quantity of total switches, which is in a position to decreases of switching losses in this process. The Three-phase reversing voltage multilevel inverter of 7- level and 9- level is accomplished for R-load and R-L load and Three Phase Induction Motor. A reversing voltage multilevel inverter of 7- level and 9- level simulation is intended and developed. Mat lab/Simulink outcome is awarded to validate the proposed scheme.

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