scholarly journals A Multi–Objective Optimization for Performance Improvement of the Z–Source Active Power Filter

2016 ◽  
Vol 67 (5) ◽  
pp. 358-364 ◽  
Author(s):  
Seyed Mohsen Hosseini ◽  
Yousef Alinejad Beromi
Keyword(s):  
Negative Impact ◽  
Active Power Filter ◽  
Active Power ◽  
Multi Objective Optimization ◽  
Power Losses ◽  
Multi Objective ◽  
Switching Power ◽  
Power Filter ◽  
Multi Objective Genetic Algorithm ◽  
Boost Factor

Abstract The high power dissipation is one of the most important problems of the z-source inverter (ZSI). By using an appropriate optimization scheme, the losses can be significantly reduced without any negative impact on the other characteristics of the inverter. In this paper, a multi-objective optimization is implemented in order to reduce the ZSI total losses as well as to improve the z-source active power filter (APF) performance. The optimization is focused on the four important objectives including power losses of the Z-source APF, the initial cost of the system components, the voltage and current ripples, and the boost factor of the z-source network. For these purposes, the multi-objective genetic algorithm (MOGA) is employed. The numerical and simulation results are presented to evaluate the optimization performance. The results show that a good balance can be achieved between the switching power losses, the voltage-current ripple levels, the component costs and the boost factor using the optimized parameters.

A New Referenced Signal Detection Method Adaptive to Multi-Objective Control of Active Power Filter

2011 ◽  
Vol 128-129 ◽  
pp. 465-468
Author(s):  
Gui Ying Liu ◽  
Shi Ping Su
Keyword(s):  
Signal Detection ◽  
Detection Method ◽  
Orthogonal Transformation ◽  
Active Power Filter ◽  
Active Power ◽  
Theory Analysis ◽  
Multi Objective ◽  
Power Filter ◽  
Objective Control ◽  
Generalized Orthogonal

That the control objectives of active power filter are diversified is an import measure to improve application efficiency of active power filter. This paper puts forward a new referenced signal detection method based on generalized orthogonal transformation, and expatiates of the basic theory of generalized orthogonal transformation and detection principles and their realization methods of all kinds of referenced signals. Finally, simulative results are given. Theory analysis and simulative results show validity of the proposed detection method.

scholarly journals A Novel Multilevel Controller

Electronics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1222
Author(s):  
Hanying Gao ◽  
Xiangnan Liu ◽  
Mingjie Ren ◽  
Shuai Feng ◽  
Zhiying Li
Keyword(s):  
Harmonic Distortion ◽  
Active Power Filter ◽  
Voltage Control ◽  
Active Power ◽  
Structure Topology ◽  
Switching Power ◽  
Power Filter ◽  
Capacitor Voltage ◽  
Important Means ◽  
And Control

Active power filter is an important means to improve power quality, and power topology is an important part of active power filter. Therefore, the research on power topology has important practical value. This paper proposes a simple-structure topology that employs eight switching power devices, two capacitors, and eight diodes to realize nine-level voltage output. The proposed topology can effectively reduce the volume and weight of the device and achieve multilevel output. Simultaneously, a compound control strategy, consisting of integrated phase voltage control and cell capacitance voltage control, is proposed for unit voltage equalization control. Finally, taking the three-phase active power filter as the research object, simulation and experimental verification are carried out with the proposed topology. The results show that the proposed topology and control scheme are feasible, and in the case of sudden load change, the fluctuation of capacitor voltage V1 is less than 3 V, the fluctuation of capacitor voltage V2 is less than 1 V, and the THD (Total Harmonic Distortion) of the phase current is well suppressed to 3.84%.

Criteria for selection of current or voltage source converter in shunt active power filter structure

2019 ◽  
Vol 16 (5) ◽  
pp. 660-669
Author(s):  
Ali Zafari ◽  
Mohammad Firoozian ◽  
Seyyed Jafar Fazeli Abelouei ◽  
Ahmad Azadi Hematabadi
Keyword(s):  
Current Source ◽  
Active Power Filter ◽  
Active Power ◽  
Voltage Source ◽  
Main Question ◽  
Power Losses ◽  
Shunt Active Power Filter ◽  
Content Type ◽  
Power Filter ◽  
Simulation Results

Purpose Votage source converter (VSC) based or current source converter (CSC) based shunt active power filter (SAPF)? It is the main question in harmonic elimination project using SAPF.This paper presents some criteria based on which the designer can decide which type of filter is more suitable for implementation of the project according to the nature and characteristics of the project. Design/methodology/approach Owing to the importance of cost and power losses criteria, relevant equations will be formulated and comparative analysis will be carried out between conventional structures based on CSC or VSC. For validation of analyses, simulation results have been studied in the MATLAB–SIMULINK environment. Findings Simulation results have examined two important criteria of power losses and costs. Although the results show the superiority of VSSAPF to CSSAPF in both criteria, this comparison is performed in a general and conventional condition. Using third-order filters of inductive-capacitive-inductive (LCL) type in VSSAPF, using insulated-gate bipolar transistor (IGBT) with reverse-voltage blocking ability in CSSAPF, which eliminates the need to use series diodes, and the use of superconducting technology in the DC-side endpoint in CSSAPF, not only reduce the difference of cost and losses in two schemes but also may lead to the lower costs and losses in CSSAPF than VSSAPF. Originality/value This paper is the result of many years working on active power filter and can be useful for engineers who are engaged in industrial projects.

Sign in / Sign up

Export Citation Format

Share Document