Cross-Connected Source Multilevel Inverter for Active Power Filtering Using Unified Constant-Frequency Integration Control

2017 ◽  
Vol 8 (1) ◽  
pp. 117
Author(s):  
Hairol Jaffar ◽  
Naziha Ahmad Azli
Keyword(s):  
Harmonic Distortion ◽  
Active Power ◽  
Multilevel Inverter ◽  
Nonlinear Loads ◽  
Constant Frequency ◽  
Steady State Condition ◽  
Multilevel Inverters ◽  
Power Filter ◽  
Power Switches ◽  
Different Characteristics

This paper proposes an Active Power Filter (APF) system which utilizes a five-level nonconventional Cross-Connected Source Multilevel Inverter (CCSMI) with a modified Unified Constant-Frequency Integration (UCI) control. The CCSMI consists of six power switches which can produce five output voltage levels. With the use of the CCSMI, the parts count is reduced with equivalent or better performance compared to the use of conventional multilevel inverters. The capability of the proposed system is tested using three types of nonlinear loads with different characteristics. The APF system is simulated under steady-state condition using MATLAB/Simulink. The results obtained show improvement in the supply current Total Harmonic Distortion (THD) with room for enhancement, using the proposed APF system.

scholarly journals Hysteresis Control for Shunt Active Power Filter under Unbalanced Three-Phase Load Conditions

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Z. Chelli ◽  
R. Toufouti ◽  
A. Omeiri ◽  
S. Saad
Keyword(s):  
Reactive Power ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Suppression ◽  
Nonlinear Loads ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Three Phase ◽  
Control Scheme

This paper focuses on a four-wire shunt active power filter (APF) control scheme proposed to improve the performance of the APF. This filter is used to compensate harmonic distortion in three-phase four-wire systems. Several harmonic suppression techniques have been widely proposed and applied to minimize harmonic effects. The proposed control scheme can compensate harmonics and reactive power of the nonlinear loads simultaneously. This approach is compared to the conventional shunt APF reference compensation strategy. The developed algorithm is validated by simulation tests using MATLAB Simulink. The obtained results have demonstrated the effectiveness of the proposed scheme and confirmed the theoretical developments for balanced and unbalanced nonlinear loads.

scholarly journals An Intelligent PI Controller-Based Hybrid Series Active Power Filter for Power Quality Improvement

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Arjun Baliyan ◽  
Majid Jamil ◽  
M. Rizwan ◽  
Ibrahim Alsaidan ◽  
Muhannad Alaraj
Keyword(s):  
Simulation Analysis ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Pi Controller ◽  
Active Power ◽  
Nonlinear Loads ◽  
Harmonic Compensation ◽  
Power Filter ◽  
Synchronous Reference Frame ◽  
Power Quality Improvement

The quality of power that is degrading day by day is an important issue for all the consumers. The important factor for this is harmonics in the voltage and current waveforms which can be resolved by the use of hybrid series active power filter. The combination consists of a series active power filter and a shunt passive filter connected in parallel to the load. The method used in this paper is for the purpose of achieving good harmonic compensation and reduced total harmonic distortion for various types of nonlinear loads as per the standards of IEEE 519. The proposed HSAPF technique uses the synchronous reference frame method for generating the compensating signal with an intelligent PI controller that uses particle swarm optimization (PSO) technique to obtain the required gain values needed to improve the steady state response of the system. The concept of vigorous HSAPF has been authenticated through MATLAB simulation analysis, and the results obtained validate the accuracy of the method for the different load conditions.

scholarly journals A New Interconnection of Micro Grid Distributed Energy Sources using Space Vector Multilevel Inverter

2019 ◽  
Vol 8 (2S3) ◽  
pp. 185-190
Keyword(s):  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Space Vector ◽  
Multilevel Inverters ◽  
Power Resources ◽  
Renewable Power ◽  
Power Switches ◽  
Electric Parameters ◽  
Overall Performance ◽  
Micro Grid

This paper describes on a new compilation of micro grid era the usage of multilevel inverter. In this paper we have linked three renewable resources are parallel like wind turbine, PV cellular and Pico Hydel generator set to deliver strength to a exceptionally small assortment of residential, reputable of business building in a locality. The electricity is generated from renewable power resources and it's far connected to space vector primarily based multilevel inverter. Therefore the power is completely computerized for this reason the strength losses can be less, reduced switching sample losses and grids have the capacity to reply robotically to the versions in electric parameters answerable for the clean functioning of the grid [1]. Moreover, decrease prices of power switches in the new semiconductor technologies as well as the current demand on excessive overall performance inverters required through Renewable Energy Systems (RES) decreased total Harmonic distortion(THD) within the spectrum of switching waveform have extended the programs of Multilevel inverters

A New Structure of the Nine Level Inverter Used as Active Power Filter with a Reduced Number of Swiches

2018 ◽  
Vol 9 (1) ◽  
pp. 198
Author(s):  
Fethi Chouaf ◽  
Salah Saad
Keyword(s):  
Reactive Power ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Switching Losses ◽  
Harmonic Currents ◽  
Proposed Model ◽  
Power Switches

In the scope of this work, a new structure of the nine level inverter is proposed using a reduced number of power switches. This inverter is used as a shunt active power filter to compensate harmonic currents and the reactive power. The modeling and simulation of the proposed model were carried out in Matlab/Simulink environment. The simulation results show that the filtering performances were achieved despite the reduction of the switches number. It was found that the current waveform becomes purely sinusoidal with a reduction in the harmonic distortion rate (THD) to 2.68%. This implies good compensation of both harmonics and reactive power with a power factor closer to unity. Reducing the switches number allows reducing the switching losses and lowering the duration of the applied voltage supported by the semiconductors. The proposed topology also allows to get simple structure of the inverter with a reduced cost.

Comparison Of Inverters’ Performance As Active Power Filters With Unified Constant–Frequency Integration Control

2012 ◽  
Author(s):  
Pei Yi Lim ◽  
Naziha Ahmad Azli
Keyword(s):  
Active Power Filter ◽  
Active Power ◽  
Multilevel Inverter ◽  
Constant Frequency ◽  
Harmonic Compensation ◽  
Matlab Simulink ◽  
Current Harmonics ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Application

Penapis Kuasa Aktif (PKA) terkenal dengan kebolehannya memampas harmonik arus dalam talian kuasa. Pelbagai jenis konfigurasi PKA telah dicadangkan dalam tempoh beberapa dekad yang lalu, tetapi jarang terdapat artikel yang mempertimbangkan kebolehan PKA meningkatkan tahap struktur pembinaannya. Artikel ini akan membandingkan operasi penyongsang biasa yang berbentuk H dengan Penyongsang Pelbagai Aras Struktur Bermodul (PPASB) yang dikawal oleh kaedah kawalan Pengamilan Disatukan Berfrekuensi Tetap (PDBT). Kelebihan struktur penyongsang baru tersebut dapat dipertambahkan peringkatnya untuk kegunaan kuasa yang lebih tinggi. Ciri–ciri setiap penyongsang tersebut akan dibincangkan dan keputusan simulasi berdasarkan MATLAB/SIMULINK juga dicatatkan. Kata kunci: Penapis kuasa aktif, penyongsang–H, penyongsang pelbagai aras struktur bermodul, pengamilan disatukan berfrekuensi tetap, pemampasan harmonik Active Power Filter (APF) is well known for its capability of compensating current harmonics in power lines. Vast varieties of APF configurations were proposed for the past few decades, but not many papers consider the expansion capability of APFs. This article presents the comparison of performance for the conventional single level H–bridge inverter and Modular Structured Multilevel Inverter where both are controlled by Unified Constant-Frequency Integration (UCI) control scheme. The latter inverter structure is more flexible to be expanded to suit higher power application. Characteristics of each topology are discussed and the simulation results based on MATLAB/SIMULINK are presented. Key words: Active power filter, H–bridge inverter, multilevel inverter, unified constant–frequency integration control, harmonic compensation

scholarly journals Harmonic Reduction of Shunt Active Power Filter using SVPWM

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1183-1188
Keyword(s):  
Reactive Power ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Fine Tuning ◽  
Switching Frequency ◽  
Nonlinear Loads ◽  
Large Power ◽  
Power Filter ◽  
Passive Filters

waveforms of voltage and current are distorted and requirement of reactive power increase due to developing use of non-linear and time-varying loads. Harmonic distortion is recognized to be sources of a number of problems, such as increase in power losses, unnecessary heating, harmonic resonances in the utility, communication obstruction, flash and clear noise, inaccurate operation of susceptible loads [1, 2]. Conventionally, LC tuned passive filters absorb generated vocal currents due to nonlinear loads. Their primary benefit is more reliability with reduced cost. However, passive filters have a number of demerits like which may be the source of harmonic interface with the utility system, in the existence of inflexible value of fine-tuning LC filter is necessary and could not meet the predetermined harmonic current restrictions [3, 4]. This gives the inspiration to the exploration of an active power filter methodology, which is sensibly viable, cost valuable and can gather the suggested standard for large power nonlinear loads. Due to the high rating and large switching-frequency constraint of the Pulse Width Modulation (PWM) inverters are used for high-power applications

scholarly journals Comparison of New Multilevel Inverter Topology with Conventional Topologies Used for Induction Heating System

2022 ◽  
Vol 18 (1) ◽  
pp. 48-57
Author(s):  
Aws Al-Jrew ◽  
Jawad Mahmood ◽  
Ramzy Ali
Keyword(s):  
Induction Heating ◽  
Harmonic Distortion ◽  
Heating System ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Switching Losses ◽  
Power Switches ◽  
The Cost ◽  
Inverter Topology ◽  
Induction Heating System

In this article, a comparison of innovative multilevel inverter topology with standard topologies has been conducted. The proposed single phase five level inverter topology has been used for induction heating system. This suggested design generates five voltage levels with a fewer number of power switches. This reduction in number of switches decreases the switching losses and the number of driving circuits and reduce the complexity of control circuit. It also reduces the cost and size for the filter used. Analysis and comparison has been done among the conventional topologies (neutral clamped and cascade H-bridge multilevel inverters) with the proposed inverter topology. The analysis includes the total harmonic distortion THD, efficiency and overall performance of the inverter systems. The simulation and analysis have been done using MATLAB/ SIMULINK. The results show good performance for the proposed topology in comparison with the conventional topologies.

scholarly journals GA Based Selective Harmonic Elimination for Multilevel Inverter with Reduced Number of Switches: An Experimental Study

2019 ◽  
Vol 25 (3) ◽  
pp. 10-17
Author(s):  
Enes Bektas ◽  
Hulusi Karaca
Keyword(s):  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Load Voltage ◽  
Medium Voltage ◽  
Multilevel Inverters ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination ◽  
Power Switches ◽  
First Time

In power electronic applications, especially high power and medium voltage, multilevel inverters (MLIs) have been commonly used. MLIs ensure high quality load voltage and lower Total Harmonic Distortion (THD) than traditional inverter. In this paper, a multilevel inverter structure with reduced number of power switches is proposed. The proposed multilevel inverter is lower costed than conventional MLI. Also, a Genetic Algorithm (GA) based Selective Harmonic Elimination (SHE) technique has been used for the first time in the proposed MLI structure with reduced number of switches. The proposed GA based SHE technique computes the optimum switching angles by solving nonlinear harmonic equations of multilevel inverter. Both Isochronous switching (IS) and SHE techniques have been applied to proposed MLI to demonstrate the effectiveness of the GA based SHE technique. Simulation and experimental results for 7, 11 and 13-level have been obtained. Results of 11-level inverter is analysed and given in detail. Results have clearly proved that desired order harmonics in proposed MLI topology can be eliminated by using GA based SHE technique and lower THD on the load voltage has been provided.

scholarly journals Performance of three-phase three-wire cascaded H-bridge multilevel inverter-based shunt active power filter

2020 ◽  
Vol 11 (3) ◽  
pp. 1430
Author(s):  
Musa Yusup Lada ◽  
Mohd Amran Mohd Radzi ◽  
Jasronita Jasni ◽  
Hashim Hizam ◽  
Auzani Jidin ◽  
...  
Keyword(s):  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Multilevel Inverter ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Three Phase ◽  
Direct Current Control ◽  
Indirect Current Control

<span lang="EN-US">Multilevel inverter (MLI) becomes more significant in Active Power Filter (APF) application due to capability to its produce low harmonic output current in which at the same time improving performance of APF. Among the topologies of MLI, Cascaded H-Bridge (CHB) is the most popular topology with less power devices requirement and simple design. MLI CHB is also capable to produce possible output voltage at twice of the number of DC source which in this case of APF is the best suited topology to replace with the conventional six -step inverter. This paper presents the performance of three- phase three-wire CHB MLI used in Shunt Active Power Filter (SAPF) based on Direct Current Control (DCC) and Indirect Current Control (ICC) schemes. Both schemes are developed and verified in MATLAB/Simulink. The simulation results show that both current control algorithms are capable to mitigate load current with Total Harmonic Distortion below than the permissible value based on IEEE 519 standard.</span>

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