Simulation of power converter control system with compensation of harmonic distortion in output voltage waveform

2015 ◽  
Author(s):  
Alecksey Anuchin ◽  
Vasiliy Kulmanov ◽  
Yuriy Belyakov
Keyword(s):  
Control System ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Voltage Waveform

scholarly journals Comparative Study of Thyristor vs IGBT Based AC-DC Power Converter

2018 ◽  
Vol 17 (3) ◽  
pp. 89-102
Author(s):  
Md. Saiful Islam ◽  
Md. Rifat-Ul-Karim Shovon ◽  
Abdul Goffar Khan
Keyword(s):  
Comparative Study ◽  
Pulse Width ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Wave Shape ◽  
Average Output ◽  
Dc Power ◽  
Voltage Wave ◽  
The Relationship

This paper presents a comparative study of the application of Thyristor versus IGBT in AC-DC controlled power converter. Both simulation and practical experiment have been carried out to test the relationship between the average output voltage (Vdc) with firing angle (α, for Thyristor) and triggering pulse width (, for IGBT). Also the total harmonic distortion (THD) has been observed in both the cases. It is observed that IGBT based power converter introduces more harmonics in the system, in spite of more symmetrical output voltage wave shape.

Comparison of Switching Angle Arrangement Techniques in Single-Phase Boost Multilevel Inverter for Low-THD Operation

2015 ◽  
Vol 793 ◽  
pp. 167-171
Author(s):  
Mohd Aizuddin Yusof ◽  
Yee Chyan Tan ◽  
M. Othman ◽  
S.S. Lee ◽  
M.A. Roslan ◽  
...  
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Solar Photovoltaic ◽  
Voltage Waveform ◽  
Voltage Level ◽  
Software Simulation ◽  
Multilevel Inverters ◽  
Simulation Results

Multilevel inverters are one of the preferred inverter choices for solar photovoltaic (PV) applications. While these inverters are capable of producing AC staircase output voltage waveform, the total harmonic distortion (THD) of the output voltage waveform can become worse if the switching angle of each voltage level is not carefully chosen. In this paper, four switching angle arrangement techniques are presented and the switching angles generated by these techniques are applied to a new single-phase boost multilevel (SPBM) inverter. The performance of 3-, 5-, 7-, 9-and 11-level SPBM inverter having four different sets of switching angles derived using the aforementioned techniques have been evaluated and compared using PSIM software. Simulation results show that one of the techniques is able to produce an output voltage waveform with the lowest THD, whilst the other generates an output voltage waveform with the highest fundamental voltage component.

An Improved ANFIS with Aid of ALO Technique for THD Minimization of Multilevel Inverters

2018 ◽  
Vol 27 (12) ◽  
pp. 1850193 ◽  
Author(s):  
Roy Francis ◽  
D. Meganathan
Keyword(s):  
Output Voltage ◽  
Fitness Function ◽  
Harmonic Distortion ◽  
Objective Functions ◽  
Voltage Waveform ◽  
Swarm Optimization ◽  
Multilevel Inverters ◽  
Optimal Outcomes ◽  
Proposed Model ◽  
Multi Level

In this study, an artificial intelligent (AI) technique is proposed for minimizing the total harmonic distortion (THD) of the multi-level inverter (MLI). An AI technique is a mixture of an ALO and ANFIS, which controls the parameters of the inverter. The innovation of the proposed technique is improving the performance of the MLI, which is reducing the THD based on the output voltage waveform. Normally, the output voltage of the inverter is based on the switching angle of MLI. Then the proposed technique is utilized to optimize the switching angle and THD of the inverter. Here, the ALO is used to analyze the switching angle of the MLI with the aid of the fitness function. ANFIS is familiar with optimizing the switching angle from the ALO algorithm output. By the implementation of the proposed technique, decrease the value of THD in the MLI for gathering the performance of the system. Asymmetrical MLI is used in the proposed model and it wishes to separate DC supply to activate. For skilled activation, the optimal outcomes and the objective functions are well-definite and recognize their restriction similarly. The proposed technique was realized in MATLAB/Simulink platform and compared with the prevailing techniques such as particle swarm optimization (PSO)-ANFIS, genetic algorithm (GA)-Artificial Neural Networks (ANN) and ANN-ALO.

scholarly journals Harmonic Research in Direct AC – AC Variable Frequency Power Converter

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1686-1690
Keyword(s):  
Lower Order ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Harmonic Spectrum ◽  
Variable Frequency ◽  
Simulation Studies ◽  
Fixed Frequency ◽  
Voltage Waveform ◽  
The Impact ◽  
Frequency Power

Direct AC-AC converter circuit termed as cyclo-converter converts fixed AC voltage, fixed frequency into variable AC voltage, variable frequency without using intermediate DC link. Cyclo-converter generates considerable harmonics when operated at variable frequency and load. The impact of harmonics is studied at multiples of lower order frequencies and firing angle. Simulation studies are performed and harmonic spectrum, Total Harmonic Distortion (THD) are diagnosed by employing MATLAB/SIMULINK platform. The Hardware prototype is implemented and the voltage waveform, harmonic profile is analyzed in real time using power logger

scholarly journals Generalized Structures for Switched-Capacitor Multilevel Inverter Topology for Energy Storage System Application

2021 ◽  
Vol 11 (3) ◽  
pp. 1319
Author(s):  
Mu Anas ◽  
Adil Sarwar ◽  
Anzar Ahmad ◽  
Afroz Alam ◽  
Shafiq Ahmad ◽  
...  
Keyword(s):  
Output Voltage ◽  
General Structure ◽  
Storage System ◽  
Harmonic Distortion ◽  
Low Frequency ◽  
Energy Storage System ◽  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Voltage Waveform ◽  
Voltage Balancing

The apparent advantages of Multilevel Inverter (MLI) topologies in handling medium and high power with less loss in switching and lower harmonic distortion in an output voltage waveform makes it better than the conventional inverter. However, the MLI topologies utilize a large number of DC power supplies and power semiconductor devices. They also have a higher value of total standing voltage (TSV). Moreover, capacitor voltage balancing problems, self-voltage boosting inability, and complex control techniques require a relook and improvement in their structure. More recently, Switched-Capacitor Multilevel Inverter (SCMLI) topologies have been proposed to overcome the shortcomings of MLIs. In this paper, a generalized structure for a single-phase switched capacitor multilevel inverter (SCMLI) with self-voltage boosting and self-voltage balancing capability is proposed. A detailed analysis of a general structure of SCMLI is presented. The comparative analysis of the structures is carried out with recently reported topologies to demonstrate superiority. An optimized low-frequency modulation controls the output voltage waveform. The simulation and experimental results are included in the paper for single-unit symmetric (9-level voltage) and asymmetric (17-level voltage) configurations.

Performance Analysis of a Half Bridge Cell Based Asymmetrical Multilevel Inverter Topology with Minimum Components

2020 ◽  
Vol 13 (4) ◽  
pp. 531-545
Author(s):  
Abeera D. Roy ◽  
Chandrahasan Umayal
Keyword(s):  
Output Voltage ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Simulation Environment ◽  
Level Control ◽  
Voltage Waveform ◽  
Multilevel Inverters ◽  
Different Types ◽  
Performance Abilities ◽  
Inverter Topology

Background: In Multilevel Inverters (MLI) as the number of level increases, there is a proportionate increase in the count of the semiconductor devices that are employed. Methods: This paper deals with an asymmetrical cascaded H-bridge inverter topology with half bridge cells to produce seven level output voltage waveform. Nearest Level Control (NLM) technique is used to produce the switching pulses. The operating principle of the proposed MLI and its performance abilities is verified through MATLAB/Simulink and a prototype is developed to provide the experimental results. Results: Total Harmonic Distortion (THD) is computed for proposed MLI for different types of loads in simulation environment as well as in the developed hardware prototype. Comparison between the proposed MLI and recent topologies demonstrates the advantageous features. Conclusion: The simulation and hardware results confirm the suitability of the proposed seven level MLI as the total component count, and the requirement of DC sources reduces considerably.

Multipurpose Power Converter for Non-Grid-Connected Microsystems

2015 ◽  
Vol 16 (2) ◽  
pp. 165-179 ◽  
Author(s):  
Panagis N. Vovos ◽  
Konstantinos G. Georgakas
Keyword(s):  
Fuzzy Control ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Low Frequency ◽  
Power Converter ◽  
Single Type ◽  
Switching Frequency ◽  
Load Step ◽  
Harmonic Content

Abstract The aim of this paper is to present a multipurpose converter, appropriate for non-grid-connected microsystems, which are prone to harmonic distortion. The converter suppresses harmonics by injecting mirror harmonics in the modulation stage. An important property is that it continuously monitors and significantly reduces the harmonic content without the use of active or passive low-frequency filters. This is under constant switching frequency, no matter if the harmonics are mainly created by the source, the loads or even its own operation. The converter is regulating output voltage using typical fuzzy control. The two types of control (harmonic and voltage) do not seem to affect each other during operation. Furthermore, it can supply either dc or ac loads from a dc source. The versatility of the converter is a useful property for remote or mobile micropower systems, where neither sources nor loads are of a single type. The converter has been tested successfully for a combination of harmonic-injecting electric appliances and various load step changes.

scholarly journals Design and Analyses of Multi-Carrier Pulse Width Modulation Techniques for Double Level Circuit Based Cascaded H-Bridge Multilevel Inverter

2021 ◽  
Vol 23 (2) ◽  
pp. 131-136
Author(s):  
Aneel Kumar Maheshwari ◽  
Mukhtiar Ahmed Mahar ◽  
Abdul Sattar Larik ◽  
Abdul Hameed Soomro
Keyword(s):  
Power Quality ◽  
High Power ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Voltage Waveform ◽  
Switching Losses ◽  
Symmetrical Model ◽  
Multi Level ◽  
Phase Arrangement

The paper introduces the cascaded H-Bridge multi-level inverter with single-phase arrangement connected series with full-bridge inverter and CHBMLI configuration integrated with Double level circuit is proposed to reduce the harmonic distortion to get high power quality. In the proposed configuration, a half-bridge inverter has been implemented to increase the output voltage waveform nearly twice as compared with the conventional Cascaded H-Bridge MLI. For high Power quality, the output voltage waveform with the reference of sinusoidal, the phase opposition disposition carrier arrangement has been utilized in PWM for producing gate pulse of switches. The high waveform of output voltage achieved with the less no of switches, less % THD distortion, less conduction and switching losses. The purposed symmetrical model of CHBMLI is successfully verified using MATLAB based on simulation with DLC configuration.

scholarly journals SIMULINK/MODELSIM CO-SIMULATION AND FPGA REALIZATION OF SPWM CONTROLLER FOR THREE PHASE MULTILEVEL INVERTER

2013 ◽  
pp. 254-259
Author(s):  
AMALA MINU C K ◽  
DARSANA VIJAY
Keyword(s):  
Harmonic Analysis ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Voltage Source ◽  
Voltage Waveform ◽  
Simulink Model ◽  
Proposed Model ◽  
Three Phase ◽  
Different Levels

In this project a design of application-based adaptable level three-phase diode clamped multilevel voltage source inverter is proposed. The inverter is designed in a fussy manner, that different levels of the inverter can be designed and simulated in a single circuit. Using select input he level switching of inverter is done. A Mat lab/Simulink model of the proposed design is modeled and simulated, with the gating signals generated using FPGA. A Phase opposition disposition sinusoidal PWM (PODSPWM) algorithm is used for generation of gating signals. The harmonic analysis of the output voltage waveform for each levels of inverter is done separately and using proposed model, verified the result. A comparison of total harmonic distortion of different levels of inverter is done. The t o t a l harmonic distortion is very low for higher level inverter. The FPGA implementation of gating signals for the proposed model is done using Xilinx Spartan 3 XCS400PQ208.

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