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Dissertations / Theses on the topic 'Active power filters (APFs)'

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Published: 5 June 2025
Last updated: 1 August 2025

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1

Al-Bayaty, Hussein Kamal Anwer. "Novel methods of utilization, elimination, and description of the distortion power in electrical circuits." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/10646.

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Firstly, this thesis investigates the electrical power harmonics in an attempt to utilize harmonic current and its distortion power in a novel idea to reconvert the distortion power into useful power. This is done, in order to feed different DC or AC loads in single and three-phase power system by using passive or active filters and accordingly, develop a new topology of hybrid active power filter (HAPF). In addition, this circuit can be considered as a power factor corrector (PFC) because it reduces the total harmonic distortion (THD) and improves the power factor (PF). Secondly, this thesis
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2

Yunus, Haroon Iqbal. "Single phase active power filters." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/13282.

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3

Koozehkanani, Ziaddin Daie. "Active filters : a unified approach." Thesis, Brunel University, 1996. http://bura.brunel.ac.uk/handle/2438/5196.

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The increase in the occurrence of non-linear loads in power systems has caused considerable concern to power utilities and manufacturers of power electronics equipment. To alleviate the problems caused by generation of current harmonics, there has been considerable interest in the use of active filters. This thesis presents a unified approach to the design of active filter configurations. It is shown that this approach offers a systematic method of classifying existing structures and it can be used for developing new circuits.
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4

Yiauw, K. H. "An investigation of shunt active power filters." Thesis, Swansea University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636711.

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Electrical power quality has grown from obscurity to a major issue due to the wide use of non-linear power electronic loads in many applications. Passive filters have been extensively used to prevent harmonics from entering the power system. However, there are many disadvantages and hence active power filters provide an alternative solution to the passive filters. Active power filters have the advantages over the passive filters such as low cost, smaller physical size and are able to compensate for randomly varying harmonic currents. In this thesis, Shunt active power filters have been employe
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5

Odavic, Milijana. "Predictive control for multilevel active power filters." Thesis, University of Nottingham, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.765261.

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6

Phinney, Joshua W. (Joshua William) 1973. "Filters with active tuning for power applications." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86779.

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7

Watson, Robert V. "Mains power quality improvement using active filters." Thesis, University of South Wales, 2009. https://pure.southwales.ac.uk/en/studentthesis/mains-power-quality-improvement-using-active-filters(e798030f-aca0-49c1-b85f-c9cb856109bb).html.

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8

Li, Ruomei. "Modelling of active filters for improving power quality." Thesis, University of Bath, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323585.

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9

El-Habrouk, Mohamed. "A new configuration for shunt active power filters." Thesis, Brunel University, 1998. http://bura.brunel.ac.uk/handle/2438/5241.

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This thesis presents a new power circuit configuration to be used in shunt active power filters. A new control algorithm based on the linear voltage control suitable for the proposed circuit is introduced. The system is analysed both in time and frequency domains. The practical implementation of the system proves its suitability for the proposed task. The switching frequency of the proposed circuit is much lower than that in other active filters. The switching losses are then considerably reduced, in addition to the fact that the switching devices can withstand larger values of currents being
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10

Marks, John Hywel. "Predictive control of active power filters using neural networks." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396419.

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11

Zhu, Mingjuan 1975. "Design of feedforward active ripple filters for power converters." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9491.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (leaves 76-77).<br>An active ripple filter is an electronic circuit which cancels or suppresses the ripple current and EMI generated by the power stage of a power converter, thus reducing the passive filtration requirements. This thesis presents the design and evaluation of various current sensing and injection methods for feedforward active filter applications including a Rogowski-Coil sensor, a transformer sensor, a class A injector, and a
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12

Gray, Matthew Alan. "A comparative analysis of proportional-integral compensated shunt active power filters." Master's thesis, Mississippi State : Mississippi State University, 2004. http://library.msstate.edu/etd/show.asp?etd=etd-11092004-083404.

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13

LaWhite, Leif E. (Leif Eric). "Active filters for 1 MHz power circuits under strict ripple limitations." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/35336.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.<br>Title as it appeared in Massachusetts Institute of Technology Graduate List, February 1987: Active filters for high frequency power circuits under strict ripple limitations.<br>Bibliography: leaf 85.<br>by Leif E. LaWhite.<br>M.S.
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14

Sun, Bo. "A FPGA-based power electronics controller for three-phase four-wire hybrid active power filters." Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2547180.

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15

Lavopa, Elisabetta. "A novel control technique for active shunt power filters for aircraft applications." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12049/.

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The More Electric Aircraft is a technological trend in modern aerospace industry to increasingly use electrical power on board the aircraft in place of mechanical, hydraulic and pneumatic power to drive aircraft subsystems. This brings major changes to the aircraft electrical system, increasing the complexity of the network topology together with stability and power quality issues. Shunt active power filters are a viable solution for power quality enhancement, in order to comply with the standard recommendations. The aircraft electrical system is characterized by variable supply frequency in t
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16

Ng, Chong H. "Control of active filters to attenuate harmonic resonance in power distribution networks." Thesis, Northumbria University, 2007. http://nrl.northumbria.ac.uk/1440/.

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Harmonic resonance occurs when the network equivalent shunt harmonic capacitive reactance is associated with the network series harmonic inductive reactance. When such resonance occurs, it amplifies harmonic components with frequency close to the resonance point. Solutions used to solve harmonic resonance problems can be divided into two main categories. One is to reduce the content of harmonic components in the network (e.g. by using active or passive harmonic filters, etc.) and the other is to remove the resonance stimulating factor by shifting away the resonance frequency to a non-critical
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17

Narayanasamy, Balaji. "Impedance Mismatching Based Design of Passive and Active EMI Filters for Power Converters." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461252861.

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18

Song, Byeong-Mun. "Voltage Balancing Techniques for Flying Capacitors Used in Soft-Switching Multilevel Active Power Filters." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/30026.

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This dissertation presents voltage stabilization techniques for flying capacitors used in soft-switching multilevel active power filters. The proposed active filter has proved to be a solution for power system harmonics produced by static high power converters. However, voltage unbalance of the clamping capacitors in the active filter in practical applications was observed due to its unequal parameters. Thus, the fundamentals of flying capacitors were characterized dealing with voltage balancing between flying capacitors and dc capacitors under practical operation, rather than ideal conditions
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19

Todeschini, Grazia. "Wind Energy Conversion Systems based on DFIG Technology used as Active Filters: Steady-State and Transient Analysis." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-dissertations/97.

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This thesis deals with the performance of a Wind Energy Conversion System operating as a power generator and Active Filter simultaneously. As a power generator, the Wind Energy Conversion System converts wind energy into electric energy; as an Active Filter, it sinks the harmonic currents injected by Non-Linear Loads connected at the same feeder. Three control systems are developed to ensure the described operation; a specific study regarding the compensation of the triplen harmonics is carried out; Doubly-Fed Induction Generator derating is defined; and an engineering economic analysis is per
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Gous, Marthinus Gerhardus Faculin. "Shunt active power filtering algorithms for unbalanced, non-linear loads." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53589.

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Thesis (MScEng)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: This thesis presents the design and implementation of shunt active power filtering algorithms for unbalanced, non-linear loads. A three-phase four-wire topology is developed in the dqO space. Based on this development an accurate dynamic system model, taking into account the effect of the neutral inductor is developed. The synchronous reference frame technique is expanded to enable the isolation of the zero sequence current component into its instantaneous active and reactive current components. Additionally a predi
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21

Wu, Mingfei. "Active Methods for Addressing the Instability Problem between Constant Power Loads and their LC Input Filters in DC Power Systems." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13938.

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Constant power loads (CPLs) have negative impedance characteristic. This characteristic can degrade the stability margin of the whole system when the CPL operates with other circuits, typically, an LC input filter. The stability of the CPL and the LC input filter can be determined by the impedance stability criterion. Many active methods have been proposed to stabilize the interaction between LC input filters and CPLs. Compared with the mature study of active methods for stabilization of inverter based CPLs and LC input filters, there are few active methods proposed for stabilization of DC/DC
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22

Lok, Io Keong. "Study of soft-switching techniques on three-level three-phase four-wire active power filters." Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2493512.

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23

Wang, Lei. "Design and implementation of a three-phase three-wire thyristor controlled LC-coupling hybrid active power filter with low dc-link voltage and wide compensation range." Thesis, University of Macau, 2017. http://umaclib3.umac.mo/record=b3691876.

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24

Lam, Chi Seng. "An adaptive low dc-voltage controlled LC coupling hybrid active power filter in three-phase four-wire power systems." Thesis, University of Macau, 2012. http://umaclib3.umac.mo/record=b2580608.

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25

Borisov, Konstantin A. "Multifunctional voltage source converter for shipboard power systems." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-06042007-142951.

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26

Terciyanli, Alper. "Design And Implementation Of A Current Source Converter Based Active Power Filter For Medium Voltage Applications." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611767/index.pdf.

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This research work is devoted to the design, development and implementation of a Current Source Converter (CSC) based Active Power Filter (APF) for Medium Voltage (MV) applications. A new approach has been proposed to the design of the CSC based APF for reducing the converter kVA rating considerably. This design approach is called the Selective Harmonic Amplification Method (SHAM), and is based on the amplification of some selected harmoniccurrent components of the CSC by the input filter, and the CSC control system, which is specifically designed for this purpose. The proposed SHAM has been i
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27

Klein-Heßling, Annegret Verfasser], Doncker Rik W. [Akademischer Betreuer] [De, and Volker [Akademischer Betreuer] Pickert. "Active DC-power filters for switched reluctance drives during single-pulse operation / Annegret Klein-Heßling ; Rik Wivina Anna de Doncker, Volker Pickert." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1187346535/34.

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28

Klein-Heßling, Annegret [Verfasser], Doncker Rik W. [Akademischer Betreuer] De, and Volker [Akademischer Betreuer] Pickert. "Active DC-power filters for switched reluctance drives during single-pulse operation / Annegret Klein-Heßling ; Rik Wivina Anna de Doncker, Volker Pickert." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1187346535/34.

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29

Liebig, Sebastian. "Optimization of rectifiers for aviation regarding power density and reliability." Doctoral thesis, Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-159936.

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The intentions of the so-called "More Electrical Aircraft" (MEA) are higher efficiency and lower weight. A main topic here is the application of electrical instead of hydraulical, pneumatical and mechanical systems. The necessary power electronic devices have intermediate DC-links, which are typically supplied by a three-phase system with active B6 and passive B12 rectifiers. A possible alternative is the B6 diode bridge in combination with an active power filter (APF). Due to the parallel arrangement, the APF offers a higher power density and is able to compensate for harmonics from several d
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30

Kwak, Sangshin. "Design and analysis of modern three-phase AC/AC power converters for AC drives and utility interface." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2336.

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Significant advances in modern ac/ac power converter technologies and demands of industries have reached beyond standard ac/ac power converters with voltage-source inverters fed from diode rectifiers. Power electronics converters have been matured to stages toward compact realization, increased high-power handling capability, and improving utility interface. Modern ac/ac power converter topologies with various control strategies have been introduced for the further improvements, such as matrix converters, current-fed converters, PWM rectifiers, and active power filters. In this dissertation, s
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31

Malvezzi, Victor Belieiro. "Estudo e projeto de controladores aplicados na malha de controle de corrente de um filtro ativo de potência paralelo." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/1200.

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Este trabalho apresenta o estudo, projeto e implementação de quatro estratégias de controle de corrente de compensação para uma topologia monofásica de Filtro Ativo de Potência Paralelo (FAPP), sendo estas denominadas, controlador PI Clássico no eixo de coordenadas ( ), controlador PI Clássico no eixo de coordenadas ( – ), Controlador PI Ressonante no eixo de coordenadas ( ) e Controlador PI Ressonante no eixo de coordenadas ( ). A tensão no barramento CC é controlada por um controlador PI clássico. O FAPP é composto por um inversor full-bridge conectado a rede elétrica, o qual opera de modo a
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Pigazo, López Alberto. "Método de control de filtros activos de potencia paralelo tolerante a perturbaciones de la tensión de red." Doctoral thesis, Universidad de Cantabria, 2004. http://hdl.handle.net/10803/10632.

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La utilización de filtros activos paralelo mejora la eficiencia del suministro eléctrico mediante la modificación de las características de la forma de onda de las corrientes de línea. Trabajos de investigación anteriores destacan la complicada estructura de los controladores empleados en este tipo de soluciones y su sensibilidad a la distorsión de la onda de tensión en el punto donde se realiza su conexión. El objetivo fundamental de esta tesis es el desarrollo de un controlador para filtros activos de potencia tolerante a desequilibrios de tensión, huecos de tensión y armónicos de tensión
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33

Liebig, Sebastian. "Optimization of rectifiers for aviation regarding power density and reliability." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2014. https://monarch.qucosa.de/id/qucosa%3A20187.

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The intentions of the so-called "More Electrical Aircraft" (MEA) are higher efficiency and lower weight. A main topic here is the application of electrical instead of hydraulical, pneumatical and mechanical systems. The necessary power electronic devices have intermediate DC-links, which are typically supplied by a three-phase system with active B6 and passive B12 rectifiers. A possible alternative is the B6 diode bridge in combination with an active power filter (APF). Due to the parallel arrangement, the APF offers a higher power density and is able to compensate for harmonics from several d
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34

Orts, Grau Salvador. "Sistema de compensación mediante filtro activo de potencia con sistema de obtención de las corrientes de referencia selectivo utilizando control 3D-3B SVPWM de la etapa de potencia. Aplicación a sistemas industriales a 4 hilos." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/3797.

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Esta tesis doctoral trata acerca de los sistemas de compensación activos de conexión en paralelo utilizados para la mejora de la calidad del suministro eléctrico, y de la eficiencia energética en las redes eléctricas de distribución y en las instalaciones, a cuatro hilos. En la presente tesis se desarrolla un nuevo filtro o compensador activo de potencia con la capacidad de seleccionar los fenómenos a compensar, incluyéndose además algunas propuestas que, aplicadas a estos sistemas de compensación, permiten mejorar las prestaciones finales obtenidas. Se presentan las estrategias de compensaci
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35

Beaulieu, Steeve. "Étude et mise au point d'un filtre actif d'harmoniques en vue d'améliorer la qualité de l'alimentation électrique /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2007. http://theses.uqac.ca.

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Thèse (M.Eng.) -- Université du Québec à Chicoutimi, 2007.<br>La p. de t. porte en outre: Mémoire présenté comme exigence partielle de la maîtrise en ingénierie. CaQCU Bibliogr.: f. [121]-124. Document électronique également accessible en format PDF. CaQCU
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36

Guerreiro, Joel Filipe 1988. "Design and implementation of a multilevel active power filter for more electric aircraft variable frequency systems = Aplicação de filtros ativos multiníveis em sistemas elétricos de aeronaves em regime de frequência variável." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259303.

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Orientador: José Antenor Pomilio<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-25T18:11:11Z (GMT). No. of bitstreams: 1 Guerreiro_JoelFilipe_M.pdf: 10178060 bytes, checksum: 342fb378bb2d1fd88084a0360e541d24 (MD5) Previous issue date: 2014<br>Resumo: Filtros Ativos de Potência Aeronáuticos (FAPA) são geralmente utilizados para melhoria da Qualidade da Energia em Sistemas Elétricos de Potência Aeronáuticos (SEPA). Os FAPA compensam os harmônicos de corrente, aumentam o fator de potência e m
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Furtado, Pablo Carlos de Siqueira. "Controle de um filtro ativo de potência bifásico a três fios utilizando a teoria p-q monofásica." Universidade Federal de Juiz de Fora (UFJF), 2014. https://repositorio.ufjf.br/jspui/handle/ufjf/4163.

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Oliveira, Caio Gomes de. "Estudo sobre conservação de energia eletrica e qualidade de energia eletrica." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259103.

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Orientadores: Fujio Sato, Ernesto Ruppert Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-14T19:28:59Z (GMT). No. of bitstreams: 1 Oliveira_CaioGomesde_M.pdf: 16585052 bytes, checksum: 61d70f191de8c032a8ab39cdcf8c652c (MD5) Previous issue date: 2009<br>Resumo: Este trabalho trata de dois temas de grande relevância, principalmente nos últimos anos, na área de energia elétrica: a conservação e a qualidade da energia elétrica. Os estudos são baseados em dados de grandezas elétricas colet
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Zimmermann, Cristiano Porporatti. "Controladores repetitivos aplicados a filtros ativos de potência sob variações de carga e de frequência da rede." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/1749.

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Este trabalho apresenta o desenvolvimento e adaptação de técnicas para minimizar os efeitos das variações de carga e de frequência da rede em controladores repetitivos aplicados a filtros ativos de potencia. Para minimizar os efeitos provenientes de sinais aperiódicos decorrentes da conexão ou desconexão de cargas não lineares é elaborada uma técnica que diferencia cargas lineares de não lineares. Esta técnica opera de forma a só reinicializar o controlador quando o erro devido ao transitório for de valor considerável ou quando ocorrer a transição de carga não linear para linear. Também é dese
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40

Alvarenga, Marcos Balduino de 1967. "Estratégia de modulação PWM aplicada em conversores multiníveis tipo cascata simétrica para o balanceamento das tensões nos barramentos CC e minimização das comutações." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260864.

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Orientador: José Antenor Pomilio<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-23T00:46:30Z (GMT). No. of bitstreams: 1 Alvarenga_MarcosBalduinode_D.pdf: 18917931 bytes, checksum: a0630621c255135a8bf5fd49974daea6 (MD5) Previous issue date: 2013<br>Resumo: Esta tese apresenta contribuições para o emprego de inversor multinível em cascata simétrica como filtro ativo de potência. O balanceamento das tensões nos barramentos CC é feito a partir de informação de um único bit obtido em cada módulo do
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Villalva, Marcelo Gradella 1978. "Estudo e aplicação de filtros ativos paralelos para sistemas trifasicos com quatro fios." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258788.

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Orientador: Ernesto Ruppert Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-04T17:39:56Z (GMT). No. of bitstreams: 1 Villalva_MarceloGradella_M.pdf: 5074196 bytes, checksum: 39f4e09d9f1f624c909a5ee7f2d3fa4d (MD5) Previous issue date: 2005<br>Resumo: o tema da qualidade de energia elétrica adquiriu grande importância em anos recentes. O número crescente de cargas baseadas em conversores eletrônicos criou a preocupação com a distorção harmônica em sistemas de energia elétrica. Qualidad
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42

Santos, Raphael Jorge Millnitz dos. "Condicionador unificado de qualidade de energia dual com controle simplificado." Universidade do Estado de Santa Catarina, 2012. http://tede.udesc.br/handle/handle/1857.

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Made available in DSpace on 2016-12-12T17:38:31Z (GMT). No. of bitstreams: 1 (Final).pdf: 65790 bytes, checksum: e733029dada465cd658278f93c2fc5fa (MD5) Previous issue date: 2012-02-28<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This work introduces a dual unified power quality conditioner (iUPQC) made by two active filters, the series and the parallel. The parallel active filter is voltage controlled, responsible for maintaining the sinusoidal, regulated, balanced and harmonic free load voltage. The series active filter is responsible for draining a sinusoidal and harmo
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43

Poure, Philippe. "Contribution à l'étude du filtrage dynamique d'un réseau électrique à l'aide d'une machine synchrone commandée par les grandeurs rotoriques." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL004N.

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Le développement de l'électronique de puissance est à l’origine de la pollution harmonique croissante des réseaux électriques. Les méthodes classiques de filtrage actif, série et parallèle, sont abondamment étudiées dans la littérature. Dans cette thèse, nous nous intéressons à une autre solution mettant en œuvre une machine synchrone dans le but de bénéficier du gain obtenu lors de la commande de la machine par les grandeurs rotoriques. Une étude analytique du filtrage d'harmoniques à l'aide d'une telle machine est d'abord présentée. Deux cas sont envisagés: soit la machine constitue la sourc
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Nien, Hung-Shou, and 粘紘壽. "Single-Phase Active Power Filters." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/16011375951715284478.

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博士<br>國立中正大學<br>電機工程所<br>94<br>The objective of this dissertation is to develop single-phase two-wire (1f2W) inverter systems for achieving active power filtering. The proposed active power filters (APFs) can be used to filter harmonic currents, compensate reactive power, improve power factor, and par-tially deal with the reactive and harmonic power. They can take into account the nonlinear ef-fect of a filter inductor, and can be modualized into a parallel-APF system. In the dissertation, a voltage-source full-bridge inverter is adopted to serve as the power stage of the discussed APFs. In an
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陳澤民. "Series-type active power filters." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/34002772778140721401.

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Marjovsky, Gustavo. "Instantaneous Power Theory for Active Filtering of High Displacement Power Factor Non-linear Loads." 2011. http://hdl.handle.net/1993/4950.

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Modern industrial plants make use of large numbers of variable frequency drives for a variety process controls. However, a drawback of this technology is that drives are a source of harmonic currents. This work designs and models in PSCAD, an electrical system typically encountered in modern industrial operations, where the load is composed of a large percentage of voltage-source converter drives. Attempts are made to provide mitigation by employing passive shunt harmonic filters. Following the benchmarking of these filters, a shunt active filter, whose control algorithm is based on the Inst
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Chen, Ben-Sheng, and 陳本盛. "Three-Phase Four-Wire Active Power Filters." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/41253884785347453692.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>88<br>In a distribution system, switching power electronic devices, especially all kinds of AC to DC converters, have been widely used in recently years. This causes very serious harmonic pollution problems. In order to reduce the harmonic, passive L-C filters have been widely employed in practice. Since many drawbacks have been observed in passive compensation methods, active filters will be examined in this work. A survey of the literatures on active filters indicate that, while analog circuits are used as the control kernels of the filters in some products and la
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WU, Li-Cheng, and 吳立成. "Development of Three-phase Active Power Filters." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/27228584142741579966.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>87<br>This thesis is concerned with the design and implementation of three-phase active power filter using solid-state switching devices. The proposed shunt active power filter is driven by voltage-source inverter to eliminate current harmonics due to nonlinear load and improve the input power factor. The load instantaneous real and reactive powers are calculated by using the load voltage and current feedback and synchronously rotating axis transformation method. Besides the load average real power and the system losses, the harmonic and reactive power are compensate
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蔡慧如. "Study of three phase active power filters." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/57577700675987184385.

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碩士<br>國立雲林科技大學<br>電機工程系碩士班<br>90<br>Due to the widely applications, such as power electronics, the power pollutions have become the serious problem in the power system. Passive filter was the simplest approach to decrease the current harmonics. However the drawbacks of this scheme are bulky components, fixed compensation characteristics and series and parallel resonance problems. A active power filter based on the power electronic technology has been proposed to improve the power quality. It can not only solve the problems of harmonic elimination and power factor correction but also improve th
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Tricoli, Pietro. "Active power filters: behaviour and performance analysis." Tesi di dottorato, 2006. http://www.fedoa.unina.it/981/1/Tricoli.pdf.

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Negli ultimi anni i dispositivi di elettronica di potenza si sono diffusi in differenti campi di applicazione e per diversi impieghi. L’ampliamento dei loro campi di applicazione è legato alla conoscenza del comportamento dei dispositivi di elettronica di potenza e delle loro prestazioni. Uno dei campi applicativi di maggiore interesse è quello della compensazione dei carichi elettrici, cioè il filtraggio attivo delle armoniche di corrente assorbite, lo sbilanciamento delle correnti e / o la compensazione della potenza reattiva richiesta. Per la realizzazione della compensazione richiesta, è n
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