Development and Current Status of Multi-Level Converter

2012 ◽  
Vol 201-202 ◽  
pp. 95-98
Author(s):  
Yan Xie ◽  
Bo Chao Chen ◽  
Yao Jun Chen
Keyword(s):  
High Voltage ◽  
High Power ◽  
Current Status ◽  
Research Focus ◽  
High Power Field ◽  
Advantages And Disadvantages ◽  
Converter Topologies ◽  
Working Principle ◽  
Multi Level ◽  
Level Converter

The multi-level converter is one of the focuses in the current high-voltage high-power field of power conversion, and is found widely application in high power drive system. It generated so far for nearly three decades of history. During this period a large number of multi-level topology appeared, there are three most commonly used, which are diode clamped, capacitor and cascaded H-bridge. In this paper, the development of the multi-level converter is reviewed. The structure of three multi-level converter topologies are given, and then their advantages and disadvantages are given by analyzing and comparing their characteristics. Finally, a new modular multi-level converter (MMC) is introduced which is one of research focus of multi-level converter field at present. Its structure and working principle are described in detail. Multi-level converters will continue to be developed to meet the demand of high-voltage and high power applications.

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 Simulation and Analysis of a Grid Connected Multi-level Converter Topologies and their Comparison

2014 ◽  
Vol 1 (2) ◽  
pp. 166-174 ◽  
Author(s):  
Mohammad Shadab Mirza ◽  
Tufail Mohammad ◽  
Qamar Alam ◽  
Mohammad Ariffuddin Mallick
Keyword(s):  
Converter Topologies ◽  
Multi Level ◽  
Level Converter

Hybrid and Multi-level Converter Topologies for On-Chip Implementation of Reduced Voltage-Swing Converters

2016 ◽  
pp. 249-283
Author(s):  
Aleksandar Prodic ◽  
Sheikh Mohammad Ahsanuzzaman ◽  
Behzad Mahdavikhah ◽  
Timothy McRae
Keyword(s):  
Converter Topologies ◽  
Multi Level ◽  
On Chip ◽  
Voltage Swing ◽  
Level Converter

scholarly journals High Voltage DC Transmission Systems for Offshore Wind Farms with Different Topologies

2019 ◽  
Vol 8 (11) ◽  
pp. 2354-2363
Keyword(s):  
High Voltage ◽  
Large Scale ◽  
Wind Farms ◽  
Offshore Wind ◽  
Voltage Source ◽  
Future Research ◽  
Voltage Source Converter ◽  
Offshore Wind Farms ◽  
Multi Level ◽  
Level Converter

Theoretical review of various topologies of high voltage DC links in application to off shore wind forms has been studied and analysed. In addition to that, various types of high voltage DC links such as back to back, two terminal, multi-terminal systems has been covered under this study. The Line-Commutated Converters, Voltage Source Converter, Modular Multi-Level Converter as well as some of advanced hybrid high voltage DC topologies in application to off shore wind forms has been reviewed. This study covers complication arising from large-scale wind power generation. The review paper also points out the scope of future research in high voltage DC converters.

Study of Cascade Seven-Level Parallel Active Filter

2012 ◽  
Vol 433-440 ◽  
pp. 6038-6042
Author(s):  
Li Ping Shi ◽  
Zheng Da Wang ◽  
Ya Jing Hu
Keyword(s):  
High Voltage ◽  
High Power ◽  
Active Power Filter ◽  
Active Power ◽  
Active Filter ◽  
Harmonic Current ◽  
Power Filter ◽  
Multi Level ◽  
Simulation Results

Multi-level inverter can output high voltage directly and can be connected without transformer, so it is applied more and more widely in high power situation. This paper presents a cascade H bridge seven-level parallel active power filter. This paper analyzes the principle of cascade H bridge multi-level inverter, designs a cascade H bridge seven-level SAPF based on CPS-SPWM, and the principle and the effect are simulated. The simulation results show that this system can compensate load harmonic current.

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