Pulse width modulation and control methods for multilevel inverters

2021 ◽  
pp. 1-33
Author(s):  
Ersan Kabalcı ◽  
Aydın Boyar ◽  
Yasin Kabalcı
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Control Methods ◽  
Multilevel Inverters ◽  
And Control

scholarly journals DIGITAL AND PULSE-WIDTH CONTROL OF A SPACE ROBOT WHEN APPROACHING A GEOSTATIONARY SATELLITE

2020 ◽  
Vol 22 (5) ◽  
pp. 74-78
Author(s):  
Ye.I. Somov ◽  
◽  
S.A. Butyrin ◽  
S.Ye. Somov ◽  
◽  
...  
Keyword(s):  
Pulse Width ◽  
Electric Propulsion ◽  
Pulse Width Modulation ◽  
Geostationary Satellite ◽  
Space Robot ◽  
Control Algorithms ◽  
Control Problems ◽  
Guidance And Control ◽  
Gyroscopic Moment ◽  
And Control

The control problems on a space robot during its approach to an information geostationary satellite are considered. The robot motion control system uses an electric propulsion system with 8 engines at the pulse-width modulation of their thrust values and a gyroscopic moment cluster based on 4 gyrodines with digital control. Numerical results are presented that demonstrate the effectiveness of the developed discrete guidance and control algorithms.

scholarly journals Improved harmonic injection pulse-width modulation variable frequency triangular carrier scheme for multilevel inverters

2020 ◽  
Vol 13 (14) ◽  
pp. 3146-3154
Author(s):  
Mohammad Sadegh Orfi Yeganeh ◽  
Mohammad Sarvi ◽  
Frede Blaabjerg ◽  
Pooya Davari
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Variable Frequency ◽  
Multilevel Inverters ◽  
Harmonic Injection ◽  
Injection Pulse

scholarly journals Research on Modified Hybrid Frequency Modulation Technology of Type-III Asymmetric CHB Multilevel Inverters

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 263
Author(s):  
Manyuan Ye ◽  
Wei Ren ◽  
Qiwen Wei ◽  
Guizhi Song ◽  
Zhilin Miao
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Low Voltage ◽  
Output Line ◽  
Line Voltage ◽  
Multilevel Inverters ◽  
Type Iii ◽  
Hybrid Frequency ◽  
Frequency Pulse

Asymmetric Cascaded H-bridge (ACHB) level inverters can output more voltage waveforms with fewer cascaded units while ensuring the quality of output voltage waveforms, so they have attracted more and more attention. Taking the topology of Type-III asymmetric CHB multilevel inverters as the research object, a Modified Hybrid Frequency Pulse Width Modulation (MHF-PWM) strategy is proposed in this paper. This modulation strategy overcomes the local overshoot of low-voltage unit in the presence of traditional Hybrid Frequency Pulse Width Modulation (HF-PWM), thus completely eliminating the low frequency harmonics in the output voltage waveform of Type-III ACHB nine-level inverters, and the Total Harmonic Distortion (THD) of output line voltage of the modulation strategy is lower than that of PS-PWM strategy in the whole modulation degree, which effectively improves the quality waveform of the output line voltage. At the same time, the strategy can also improve the problems of current backflow and energy feedback caused by the high-voltage unit pouring current to the low-voltage unit, thereby reducing the imbalance of the output power of the high-voltage and low-voltage units. Finally, the Matlab/Simulink simulation model and experimental platform are established to verify the validity and practicality of the modulation strategy.

Certain Investigation on Multilevel Inverters for Photovoltaic Grid Connected System

2016 ◽  
Vol 25 (09) ◽  
pp. 1650108 ◽  
Author(s):  
P. Karuppusamy ◽  
G. Vijayakumar ◽  
S. Sathishkumar
Keyword(s):  
Solar Energy ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Electrical Energy ◽  
Pv System ◽  
Multilevel Inverters ◽  
Dc Power ◽  
Harmonic Content ◽  
Ac Power

This paper presents a photovoltaic (PV) system to convert the solar energy into electrical energy. DC power from PV system is converted into AC power using multilevel inverters. Cascaded H-bridge (CHB) inverter and diode clamped inverter (DCI) are used to convert variable DC power into sinusoidal AC power. Harmonic content is the important part to improve the efficiency of the inverter. Harmonics of CHB inverter and DCI are simulated and analyzed with different pulse width modulation (PWM) techniques.

Fast minimum loss space vector pulse‐width modulation algorithm for multilevel inverters

2014 ◽  
Vol 7 (6) ◽  
pp. 1590-1602 ◽  
Author(s):  
Yilmaz Sozer ◽  
David A. Torrey ◽  
Aparna Saha ◽  
Hung Nguyen ◽  
Nathaniel Hawes
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Minimum Loss ◽  
Space Vector ◽  
Multilevel Inverters

scholarly journals Advanced Fan Controller Using Atmega 1284P

2018 ◽  
Vol 18 (2) ◽  
pp. 43-47
Author(s):  
F.G. Apostol ◽  
G. Predusca
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Source Code ◽  
Manual Control ◽  
The Internet ◽  
Operating Parameters ◽  
Monitoring And Control ◽  
Mode Of Operation ◽  
Maximum Temperatures ◽  
And Control

AbstractThe project aims at creating a monitoring and control circuit in a desktop or complex system with the possibility to set the operating parameters. The project allows automatic and manual control of a certain number of fans using Pulse Width Modulation (PWM) control by the user or automatically by the system monitoring thresholds of minimum and average temperatures (also set by the user within the code). The system was designed with the following options: audible and visual alert when reaching maximum temperatures; time display, PWM percentage and three temperatures shown on a 16x2 LCD; the system-acquired data is then transmitted to a website. Additional features include the possibility of setting a color inside the system, also used as an alert as well as a color adjustment function by sound (for a musical lightshow). The mode of operation is based on the source code written in the Arduino IDE 1.6.3 software with the help of free libraries and free codes provided on the internet.

scholarly journals Performance evaluation and comparison of diode clamped multilevel inverter and hybrid inverter based on PD and APOD modulation techniques

2019 ◽  
Vol 8 (2) ◽  
pp. 143
Author(s):  
N. Susheela ◽  
P. Satish Kumar
Keyword(s):  
Pulse Width ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Number Of Components ◽  
Modulation Techniques ◽  
Modulation Methods

<p>The popularity of multilevel inverters have increasing over the years in various applications without use of a transformer and has many benefits. This work presents the performance and comparative analysis of single phase diode clamped multilevel inverter and a hybrid inverter with reduced number of components. As there are some drawbacks of diode clamped multilevel inverter such as requiring higher number of components, PWM control method is complex and capacitor voltage balancing problem, an implementation of hybrid inverter that requires fewer components and less carrier signals when compared to conventional multilevel inverters is discussed. The performance of single phase diode clamped multilevel inverter and hybrid multilevel inverter for seven, nine and eleven levels is performed using phase disposition, alternate phase opposition disposition sinusoidal pulse width modulation techniques. Both the multilevel inverter are implemented for the above mentioned multicarrier based Pulse Width Modulation methods for R and R-L loads.  The total harmonic distortion is evaluated at various modulation indices. The analysis of the multilevel inverters is done by simulation in matlab / simulink environment.</p>

scholarly journals A Simplified PWM Technique for Reduced Switch Count Multilevel Inverter

2018 ◽  
Vol 9 (3) ◽  
pp. 711
Author(s):  
Adireddy Ramesh, ◽  
O. Chandra Sekhar ◽  
M. Siva Kumar
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Low Cost ◽  
High Harmonic ◽  
Harmonic Distortion ◽  
Wave Form ◽  
Medium Voltage ◽  
Multilevel Inverters ◽  
Voltage Application ◽  
Protection Circuits

<p>Penetration of multilevel inverters (MLI) in to high power and medium voltage application has been increasing because of its advantages. The conventional two levels inverter has high harmonic distortion which gives poor power quality. Lot of topologies has been developed to overcome the drawbacks of a two level inverter. These topologies include more number of switching devices which increases the design complexity and cost. The optimum design of inverter requires less number of switches with better quality in waveform. In this paper, a symmetrical five level and seven levels inverter configuration with simplified pulse width modulation technique is proposed. This proposed inverter requires less switches, less protection circuits along with low cost and size. The analysis of the inverter circuits is done by using Matlab/Simulink software. The synthesized staircase wave form is shown and total harmonic distortion (THD) is also measured.</p>

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