Investigation of Diode Clamped Multilevel Inverter Using Multicarrier PWM Techniques

2021 ◽  
Author(s):  
R Bharathsrinivas ◽  
Sachin Angadi ◽  
Gurubasu Hombal ◽  
A B Raju
Keyword(s):  
Multilevel Inverter ◽  
Multicarrier Pwm

Switching Modulation Strategies for Multilevel Inverter

2021 ◽  
Vol 20 (2) ◽  
pp. 1-7
Author(s):  
Jahanzeb - ◽  
Shahrin Md. Ayob ◽  
Saifullah Khan ◽  
Mohd Zaki Daud ◽  
Razman Ayop
Keyword(s):  
Single Phase ◽  
Multilevel Inverter ◽  
Level Control ◽  
Multilevel Inverters ◽  
Power Switches ◽  
Modulation Schemes ◽  
Multicarrier Pwm

There is always a need to create efficient and optimized converters to deliver the best possible results to achieve a better THD profile in the waveform output. One way is by controlling the switching of the power switches of the converters using appropriate modulation schemes. While numerous works have been done in proposing new switching modulation strategies for multilevel inverters, this work will compare multicarrier PWM and near-to-level control (NLC) modulation schemes. In this paper, multicarrier PWM variants, namely, PD-PWM, POD-PWM, and APOD-PWM, are designed and simulated. Their voltage THD and spectrum performance are discussed when applied to single-phase 7, 9, and 11-level cascaded multilevel inverters. Then NLC modulation will be designed and applied to similar multilevel inverter circuits. It will be shown that the NLC exhibits some superior performances compared to PWM-based but with several drawbacks that can be optimized. 

scholarly journals Multicarrier PWM Based Control of Modular Multilevel Inverter with Grid Connected Solar PV System

2021 ◽  
Vol 7 (05) ◽  
pp. 72-80
Author(s):  
Saminathan S & Dr. Ranjithkumar K
Keyword(s):  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Solar Pv ◽  
Pv System ◽  
Voltage Balancing ◽  
Multilevel Inverters ◽  
Solar Pv System ◽  
And Performance ◽  
Inverter Topology ◽  
Multicarrier Pwm

In this work, a new modular multilevel inverter topology is introduced for a single phase grid connected Photovoltaic system. This multilevel inverter use less number of switches to generate seven levels compared to other conventional multilevel inverters. This requires only one isolated dc source to operate. So it is suitable for renewable energy application. This inverter is designed by submodule configuration; each sub module contains two switches and one DC link capacitor. The sub modules will be added to the inverter depending on number of levels. The voltage balancing of DC link capacitor is carried out by Y matrix PWM technique. Because of Y matrix PWM technique, the inverter gets a self capacitor voltage balancing ability. So there is no need of external devices required for balancing the voltage of capacitor. A PLL for grid integration and LCL filter are designed and integrated with this inverter. The simulation of proposed system is carried out by MATLAB/SIMULINK and performance of THD is monitored as per standards

MULTILEVEL INVERTER WITH VARIABLE AMPLITUDE MULTICARRIER PWM TECHNIQUES

2014 ◽  
Vol 2 (3) ◽  
pp. 6
Author(s):  
PANDIARAJAN SURESH P. ◽  
NATARAJAN. S.P. ◽  
C. R. Balamurugan ◽  
◽  
◽  
...  
Keyword(s):  
Multilevel Inverter ◽  
Variable Amplitude ◽  
Multicarrier Pwm

scholarly journals Behavior of a Dual Stator Induction Machine Fed by Neutral Point Clamped Multilevel Inverter

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Mohamed Arbi Khlifi
Keyword(s):  
Induction Machine ◽  
Harmonic Distortion ◽  
Induction Machines ◽  
Power Source ◽  
Neutral Point ◽  
Multilevel Inverter ◽  
Management Systems ◽  
Stator Winding ◽  
Multilevel Inverters ◽  
Multicarrier Pwm

Use of multilevel inverters with induction machines has become popular in most energy conversion and management systems. The present paper discusses the behavior of the dual stator-winding induction machine (DSIM) for the power source, which is a power supply with Neutral Point Clamped (NPC). Multilevel inverter with PWM technique control is analyzed. The DSIM control is obtained by the PWM technique to multicarrier PWM technique and after a comparative study of various characteristics of the DSIM taking into account the different electrical offsets between the two stars (0°, 30°, 60°). The gap between the two stars was considered, and it is impacted on torque and rates harmonic distortion of circulation currents.

Comparison of Multicarrier PWM Techniques for Cascaded H-Bridge Multilevel Inverter

2017 ◽  
Vol 8 (2) ◽  
pp. 861 ◽  
Author(s):  
Hashim Hasabelrasul ◽  
Xiangwu Yan
Keyword(s):  
High Power ◽  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Power Level ◽  
Power Conversion ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Simulation Results ◽  
Multicarrier Pwm

<p>One of the preferred choices of electronic power conversion for high power applications are multilevel inverters topologies finding increased attention in industry. Cascaded H-Bridge multilevel inverter is one of these topologies reaching the higher output voltage, power level and higher reliability due to its modular topology. Level Shifted Carrier Pulse Width Modulation (LSCPWM) and Phase Shifted Carrier Pulse Width Modulation are used generally for switching cascaded H-bridge (CHB) multilevel inverters. This paper compares LSCPWM and PSCPWM in terms of total harmonics distortion (THD) and output voltage among inverter cells. Simulation for 21-level CHB inverter is carried out in MATLAB/SIMULINK and simulation results are presented.</p>

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