A Low-voltage Low-loss Active Reflected Wave Canceller for a Medium Voltage SiC Motor Drive based on a Generalized Multilevel Inverter Topology

2021 ◽  
pp. 1-1
Author(s):  
Yu Zhang ◽  
Hui Li ◽  
Zhehui Guo ◽  
Fang Z. Peng
Keyword(s):  
Low Voltage ◽  
Multilevel Inverter ◽  
Motor Drive ◽  
Low Loss ◽  
Medium Voltage ◽  
Reflected Wave ◽  
Inverter Topology

Performance Analysis of Cascade H-Bridge Multilevel Inverter Topology With Filter Circuit and Without Filter Circuit

2020 ◽  
pp. 87-101
Author(s):  
Nikhil Agrawal
Keyword(s):  
Performance Analysis ◽  
High Power ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Total Harmonic Distortion ◽  
Medium Voltage ◽  
Number Of Components ◽  
Modulation Techniques ◽  
Driver Circuit ◽  
Inverter Topology

Multilevel inverter is a modified version of inverter. Multilevel inverter recently emerged in the area of high power and medium voltage application. In the last few decades, the great innovation has been done to improve the inverter performance, and it is challenging even today. The multilevel inverter performance is examined by total harmonic distortion and component required. In multilevel, as level increases, the total harmonic distortion value decreases, but the number of components required and driver circuit increases that make the circuit more complex and also the effect on cost. So, the challenge is to balance the bridge between cost and total harmonic distortion. This chapter simulates the various levels of conventional cascade H-bridge inverter and new proposed topology of multilevel inverter with using different modulation techniques and with using filter circuit and without filter circuit.

scholarly journals Performance Analysis of Nested Multilevel Inverter Topology for 72V Electric Vehicle Applications

2020 ◽  
Vol 53 (6) ◽  
pp. 925-930
Author(s):  
Narendra Kumar Muthukuri ◽  
Rajanand Patnaik Narasipuram ◽  
Subbarao Mopidevi
Keyword(s):  
Electric Vehicle ◽  
Electromagnetic Interference ◽  
Multilevel Inverter ◽  
Motor Drive ◽  
Switching Frequency ◽  
Rpm System ◽  
Control Scheme ◽  
And Control ◽  
Phase Design ◽  
Inverter Topology

In recent years Multilevel Inverter (MLI) getting in popular due to its performance in field of medium and high-power applications. Many MLI’s like Diode-clamped, cascaded H-bridge, flying capacitor and hybrid cascaded H-bridge are introduced in 1970’s. But due to the draw backs like harmonic distortions researchers are concentrated on novel topologies. Recently nested configuration is gaining attention to researchers due to it is having an advantage of 3-phase design with a smaller number of components compared to traditional MLI topologies. Hence, this paper investigates the performance an advanced MLI named as Nested topology for 72V electric vehicle (EV) motor drive application for 1kW/1500 RPM system. It can generate near-sinusoidal voltages with only fundamental switching frequency, there is no electromagnetic interference (EMI) and also it gives easy operating EV and safer conditions. Furthermore, this paper inspects the analysis, benefits and control scheme for nested MLI for the use of EV motor drive applications. The simulations are carried out using Matlab/Simlink.

A New Asymmetric and Cascaded Switched Diode Multilevel Inverter Topology for Reduced Switches, DC Source and Blocked Voltage on Switches

2019 ◽  
Vol 28 (04) ◽  
pp. 1950064 ◽  
Author(s):  
S. A. Ahamed Ibrahim ◽  
P. Anbalagan ◽  
M. A. Jagabar Sathik
Keyword(s):  
High Power ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Basic Unit ◽  
Prototype Model ◽  
Multilevel Converter ◽  
Multilevel Converters ◽  
Medium Voltage ◽  
Blocking Voltage ◽  
Inverter Topology

In this paper, a new asymmetric switched diode (ASD) multilevel inverter is presented for medium-voltage and high-power applications. The proposed converter consists of series connection basic unit with full-bridge inverter. In addition to this, a cascaded switched diode (CSD) structure is recommended to generate the higher number of voltage levels. Seven different algorithms are presented to determine the magnitudes of DC sources in CSD topology. To prove the advantages of proposed multilevel converter over recent multilevel converters in terms of blocking voltage, numbers of IGBTs and on-state switches are presented. To show the authority of the proposed multilevel inverter, it is simulated using MATLAB/Simulink and is experimentally tested using prototype model for 13-level inverter. Finally, various output voltage and current waveforms are shown to prove the dynamic behavior of proposed inverter.

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