scholarly journals ANALYSIS OF ACTIVE HARMONIC COMPENSATION ALGORITHMS FOR GRID-CONNECTED PHOTOVOLTAIC INVERTERS / AKTYVUSIS HARMONIKŲ KOMPENSAVIMAS SAULĖS ELEKTRINIŲ TINKLO INVERTERIAIS – ALGORITMŲ ANALIZĖ

2014 ◽  
Vol 6 (2) ◽  
pp. 188-193
Author(s):  
Andrius Platakis
Keyword(s):  
Distributed Generation ◽  
Control Method ◽  
Active Power ◽  
Harmonic Compensation ◽  
Short Overview ◽  
Comparison Results ◽  
Active Harmonic Compensation

A review of various standards, concerning distributed generation, and different Active Harmonic Compensation (AHC) or Active Power Filtering (APF) methods are presented in this paper. Short overview of each control method is given. The experimentation results from various publications are taken into account evaluating the feasibility of an AHC algorithm to be integrated in a typical commercially available grid-connected Photovoltaic inverter. The comparison results are presented in a table. The results of this paper can be used for further investigation in deciding which particular algorithm to try to implement and experiment with. Pateikta standartų, taikomų paskirstytosioms elektrinėms jungti į žemos įtampos elektros skirstomuosius tinklus, apžvalga. Išnagrinėtas aktyvusis harmonikų kompensavimo (AHK) aspektas, esantis šiuose standartuose. Pateikti harmonikų limitai, kuriuos turi atitikti jungiamos į žemos įtampos elektros tinklą paskirstytosios elektrinės. Apžvelgti skirtingi AHK metodai, pateikta kiekvieno algoritmo analizė. Atsižvelgiant į galimybę AHK įgyvendinti šiuo metu komerciškai gaminamuose saulės elektrinių tinklo inverteriuose (SETI), tarpusavyje palyginti skirtingi AHK pagal algoritmų skaičiavimo intensyvumą, daviklių skaičių, topologiją, maksimaliai kompensuojamų harmonikų skaičių ir priklausomybę nuo apkrovos tipo.

Distributed Generation Control Method for Active Power Sharing and Self-Frequency Recovery in an Islanded Microgrid

2017 ◽  
Vol 32 (1) ◽  
pp. 544-551 ◽  
Author(s):  
Yun-Su Kim ◽  
Eung-Sang Kim ◽  
Seung-Il Moon
Keyword(s):  
Distributed Generation ◽  
Control Method ◽  
Active Power ◽  
Power Sharing ◽  
Islanded Microgrid ◽  
Generation Control

scholarly journals Modeling and Analysis of a Multilevel Parallel Hybrid Active Power Filter

2016 ◽  
Vol 6 (3) ◽  
pp. 976-981 ◽  
Author(s):  
T. Demirdelen ◽  
R. I. Kayaalp ◽  
M. Tumay
Keyword(s):  
Reactive Power ◽  
Control Method ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Compensation ◽  
Modeling And Analysis ◽  
Control Approach ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Parallel Hybrid

This paper introduces a new control approach for the Multilevel Parallel Hybrid Active Power Filter (M-PHAPF) which can compensate harmonics and variable reactive power demand of loads by controlling the DC link voltage adaptively in medium voltage applications. By the means of this novel control method, M-PHAPF obtains a better and more efficient performance in the compensation of harmonics and reactive power compared to when using conventional control methods. The performance and stability of the proposed method are verified with a simulation model realized in PSCAD/EMTDC with different case studies. The simulation results demonstrate that harmonic compensation performance meets the requirements of the IEEE-519 standard.

Distributed Generation Inverter as APF in Dual APF DG interfacing Scheme

2017 ◽  
Vol 8 (3) ◽  
pp. 1441
Author(s):  
Yadiki Rajendra Babu ◽  
C. Srinivasa Rao
Keyword(s):  
Power Quality ◽  
Distributed Generation ◽  
Active Power ◽  
Harmonic Compensation ◽  
Active Power Filters ◽  
Power Filters ◽  
Electrical Engineers ◽  
Quality Issues ◽  
Compensating Devices

<span>Power quality issues are the most concerned area for electrical engineers in these modern days due to indusrtrialization and advancements in electronics. Harmonics are one of the power quality issues that deteriorated the quality of source components delivered to load. Active power filters (APF) are the compensating devices used to mitigate harmonics. Distributed generation (DG) became a trendline due to economical, technical and environmental reasons. This paper presents the harmonic compensation using dual APF sharing compensating signals while active power is fed from distributed generation to grid. DG inverter acts as an interface between DG system and grid to feed active power from DG to grid. In this context, the DG inverter acts both as inverter and APF, used as inverter to invert supply from DG and feeds grid for specified time and also as APF for harmonic compensation thereafter along with dual APF. The proposed system is developed and results are obtained using MATLAB/SIMULINK software. Results are shown for DG inverter feeding active power to grid and also acting as APF. Dual APF characteristics are also shown.  </span>

New Control Method of Active Power Quality Compensator with Reduced-Capacity Three-Leg Inverter for Electrified Railways

2009 ◽  
Vol 129 (9) ◽  
pp. 907-913
Author(s):  
Norio Ishikura ◽  
Eiji Hiraki ◽  
Toshihiko Tanaka
Keyword(s):  
Power Quality ◽  
Control Method ◽  
Active Power ◽  
Electrified Railways

scholarly journals Disturbance compensation-based output feedback adaptive control for shape memory alloy actuator system

2021 ◽  
Vol 18 (1) ◽  
pp. 172988142199399
Author(s):  
Xiaoguang Li ◽  
Bi Zhang ◽  
Daohui Zhang ◽  
Xingang Zhao ◽  
Jianda Han
Keyword(s):  
Adaptive Control ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Control Method ◽  
Control Law ◽  
Reference Trajectory ◽  
Disturbance Compensation ◽  
Comparison Results ◽  
Control Scheme ◽  
Actuator System

Shape memory alloy (SMA) has been utilized as the material of smart actuators due to the miniaturization and lightweight. However, the nonlinearity and hysteresis of SMA material seriously affect the precise control. In this article, a novel disturbance compensation-based adaptive control scheme is developed to improve the control performance of SMA actuator system. Firstly, the nominal model is constructed based on the physical process. Next, an estimator is developed to online update not only the unmeasured system states but also the total disturbance. Then, the novel adaptive controller, which is composed of the nominal control law and the compensation control law, is designed. Finally, the proposed scheme is evaluated in the SMA experimental setup. The comparison results have demonstrated that the proposed control method can track reference trajectory accurately, reject load variations and stochastic disturbances timely, and exhibit satisfactory robust stability. The proposed control scheme is system independent and has some potential in other types of SMA-actuated systems.

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