Relevant bibliographies by topics / Active power filter (APF)

Academic literature on the topic 'Active power filter (APF)'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Active power filter (APF)"

1

Zhou, Xue Song, Da Yan Wang, and You Jie Ma. "An Overview of Active Power Filter." Applied Mechanics and Materials 552 (June 2014): 111–14. http://dx.doi.org/10.4028/www.scientific.net/amm.552.111.

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APF has its outstanding features comparing with PPF, it is a new type harmonic suppression and reactive power compensation device. This paper makes an introduction about two key technologies about APF, and it makes a prediction to the trend of the key technologies. APF is the main harmonic suppression technique at present and in the future. At present, there are large of loads in every industry, such as, electric arc furnace in steel industry, the welder in automotive industry, and these industries are important sectors of the national economy, we can do not stop them running, only installing APF in the appropriate location .Therefore, APF has broad prospects for development in various industries.
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Ma, You Jie, Jian Zhao, and Xue Song Zhou. "Control Methods of Active Power Filter." Advanced Materials Research 317-319 (August 2011): 2342–45. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2342.

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Active power filter (APF) is an important device to compensate harmonic and reactive current in power system control method adopted has a great influence on its performance. The paper introduces several control methods used by APF, including the deadbeat control, single-cycle control, space vector control and so on. After comparing and analyzing their individual advantages and disadvantages, some improvements for APF performance are proposed.
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Zhou, Xue Song, Wei Liu, and You Jie Ma. "The Review of of Active Power Filter." Advanced Materials Research 940 (June 2014): 339–42. http://dx.doi.org/10.4028/www.scientific.net/amr.940.339.

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Harmonics of power system seriously affected the quality of electric power. Active Power Filter (APF) [ which overcomes the shortcomings of passive filter (PF) has become main technology to suppress harmonic. In this paper, development history, key technology, problems and trends of APF are mainly analyzed and reviewed. With development of key technology of APF, it will have a better application prospect.
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Xie, Xi Feng, and Li Ling Zheng. "Design of Single-Phase Active Power Filter." Applied Mechanics and Materials 329 (June 2013): 421–25. http://dx.doi.org/10.4028/www.scientific.net/amm.329.421.

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Aiming at the features of complexity, poor real-time and Low-accuracy of single-phase Active Power Filter (APF), and the problem of impossible parallel computation in the traditional DSP software realization, new design method of APF Based on FPGA is proposed, This paper focuses on the study of the harmonic current detecting method and improves control method of compensate current, it builds an experimental platform with FPGA EP1C12Q240C8 as the controller, the experimental results all support the effectiveness and correctness of the control methods and design methods of APF.
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Cao, Xudong, Shaozhe Zhou, Jingze Li, and Shaohua Zhang. "A DC Voltage Control Strategy for Active Power Filter." Open Electrical & Electronic Engineering Journal 10, no. 1 (December 30, 2016): 166–80. http://dx.doi.org/10.2174/1874129001610010166.

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Active Power Filter (APF) is capable of changing the size and frequency of harmonics as well as changes in reactive power compensation. It is important to control the stability of the DC-link capacitor voltage stability for it. For DC voltage controls of APF, there are two important achievements. First, it is indicated that the control of DC voltage directly affects the compensation performance of APF. Second, the value of DC voltage influences the power loss of APF. This paper firstly introduces the design of the DC voltage controller. Then the relationship between DC voltage and the power loss as well as the compensation performance of APF is analyzed. Finally, a new control scheme with a droop controller is developed to regulate DC voltage.
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Huang, Jiao Ying, Cheng Gao, Hai Wen Yuan, and Hang Zou. "Design and Implementation of an Active Power Filter." Applied Mechanics and Materials 44-47 (December 2010): 1397–401. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1397.

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In order to compensate current harmonic in oil drilling power system, the design, development and experimental investigations of an APF were considered. Based on Fourier transform, a direct harmonic analysis algorithm was designed to identify and track harmonics. Compared with traditional FFT, the proposed algorithm was less dependent on hardware and could be used to for selective harmonic compensation. The laboratory prototype of the APF system was designed and implemented, which was tested in different operating conditions with nonlinear loads to demonstrate its effectiveness and capabilities for harmonic elimination. All experimental results are given and discussed in detail, which validate the proposed APF.
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Li, Tao, and Yong Qiang Liu. "Delay Dependent Stability Analysis of Active Power Filter." Applied Mechanics and Materials 220-223 (November 2012): 1592–97. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.1592.

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The active power filter (APF) is a dynamic harmonic filtering equipment. The time delay is unavoidable and it has a great negative influence on the stability of the APF system. Based on the introduction of its topology and control strategy, the mathematical model of APF with time delay is built. And the model is a time delay systems with bounded nonlinearity, so a new delay dependent stability criteria is derived and formulated in the form of linear matrix inequality (LMI). The maximum allowed time delay is solved, and the relationships between it and some other parameters are investigated and simulated. The result can be as a reference in the future work.
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ZHOU, LIDAN, MUHAMMAD MANSOOR KHAN, FEIFENG JI, GANG YAO, DA XIE, CHEN CHEN, and JOAN SHU. "ON USING LINEAR PERIODICALLY RESETTING FILTER IN CURRENT CONTROL LOOP FOR ACTIVE POWER FILTER." Journal of Circuits, Systems and Computers 15, no. 04 (August 2006): 615–39. http://dx.doi.org/10.1142/s0218126606003192.

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Among linear control techniques, deadbeat control has been widely accepted as a feasible current control technique as far as the digital signal processor (DSP) implementation of active power filter (APF) is concerned. This control technique uses high gain on the error measured at one sample, to control the error ideally to zero by the next sample. The high gain makes the control very sensitive to any error or noise in the measurements, which is always there in electrical systems. Especially, the periodic noise in parallel implementation of an inverter or APF demands a higher order filter at the current transducer output, which affects the dynamic response of the system. Recently, few papers have reported the results about the use of linear periodically resetting integrators (LPRI) as filter in some electronic applications. This paper is an attempt to generalize the idea of LPRI and here we introduce the notion of linear periodically resetting filter (LPRF). The frequency characteristics of an LPRF are analyzed. Possible application of these filters in current control is studied. It is shown that these filters can be adopted to improve the performances of a current loop in APF.
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Osman, Dygku Aniqnatasa Awg, Rahimi Baharom, Dalina Johari, Muhamad Nabil Hidayat, and Khairul Safuan Muhammad. "Development of active power filter using rectifier boost technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 3 (September 1, 2019): 1446. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1446-1453.

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<span>The development of active power filter (APF) using rectifier boost technique has been identified to compensate for the pulsating nature of the distorted supply current waveform of non-linear load. In this work, investigation is carried out on the operation of rectifier without any filters function. This is then extended to operate the rectifier converter with an active power filter function. APF function is implemented by enabling the closed-loop control using standard proportional integral control to rectify the distorted supply current to become continuous, sinusoidal and in-phase with the supply voltage waveform. Consequently, the total harmonic distortion (THD) level was reduced to meet the acceptable limit defined in the standard of IEEE-519 1992. The selected simulation results obtained from MATLAB/Simulink are presented to justify the proposed filter structure.</span>
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Zhang, Yong Feng, Xin Gong Cheng, Xi Ju Zong, Qing Qing Miu, Xiao Hong Chen, Yan Liang Wang, and Gang Chen. "The Switched Control of Single Phase Active Power Filter." Advanced Materials Research 383-390 (November 2011): 7515–20. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7515.

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This paper proposes a novel control approach for single phase active power filter (APF) based on switched system theory, since the switching performance of APF. The switched model of APF is established by means of switching function. On this basis, the switched system error model is obtained. After that, a quadratic Lyapunov function is design to determine the switched control law. The switched control can make the switched system asymptotically stable and compensate the distorted current caused by the nonlinear load current. The effectiveness and rationality of the proposed approach is confirmed by the simulation result compared with the linear voltage control approach.
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Dissertations / Theses on the topic "Active power filter (APF)"

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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 works on a new design of active power factor correction (APFC) circuit presenting two circuits with the same design principle: the first design consists of two active switches without an external complex control circuit, while the second design contains a single active switch with an additional control circuit. The main contribution of this circuit is 98% reduction of the inductor's value used in the newly proposed PFC circuit in comparison with the conventional boost converter which may lead to a huge reduction in size, weight and the cost of the new PFC circuit. Also, the active switches depend on a carefully designed switching pattern that results in an elimination of the third order harmonic from the input source current which decreases the value of total current harmonic distortion (THDI) to (14%) and improves the input PF to (0.99). Consequently, the simplicity of the design without requiring a complex control circuit and without a snubber circuit plus the minimum size of inductor, gives the newly proposed circuit the superiority on other PFC circuits. Thirdly, this research aims to describe the distortion power through submitting two novel power terms called effective active power (Pef ) & reactive power (Qef ) terms with a new power diagram called Right-Angled Power Triangle (RAPT) Diagram. In addition, a novel de nition of total apparent power (St) has been submitted in order to illustrate the physical meaning of (St) in non-sinusoidal systems. The new RAPT Diagram is based on the orthogonality law and depends on geometrical summation to describe the relationship between different aspects (apparent-active-reactive) of power, and different components (total-fundamental distortion), drawing a bridge to connect the time domain with the frequency domain in a two-dimensional diagram.
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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 devices. The use of the diode bridge rectifier alone is not permitted due to the highly distorted phase current. The following investigations are dealing with the development of an active power filter for a three-phase supply with variable frequency from 360 to 800 Hz. All relevant components such as inductors, EMC-filters, power modules and DC-link capacitor are designed. A particular focus is put on the customized power module with SiC-MOSFETs and SiC-diodes, which is characterized electrically and thermally. The maximum supply frequency slope has a value of 50 Hz/ms, which requires a high dynamic and robustness on the control algorithm. Furthermore, the content of 5th and 7th harmonics must be reduced to less than 2 %, which demands a high accuracy. To cope with both requirements, a two-stage filter algorithm is developed and implemented in two independent signal processors. Simulations and laboratory experiments confirm the performance and robustness of the control algorithm. This work comprehensively presents the design of aerospace rectifiers. The results were published in conferences and patents
Hauptziele des sogenannten "More Electrical Aircraft" (MEA) sind Effizienzerhöhung und Gewichtseinsparung. Ein Schwerpunkt hierbei ist die Nutzung von elektrischen statt hydraulischen, pneumatischen und mechanischen Systemen. Die notwendigen Leistungselektroniken haben DC-Zwischenkreise, welche mittels aktiven B6 und passiven B12 Gleichrichtern aus dem Dreiphasennetz gespeist werden. Eine mögliche Alternative ist die B6 Diodenbrücke in Kombination mit einem aktiven Netzfilter, welcher aufgrund der parallelen Anordnung eine höhere Leistungsdichte aufweist und darüber hinaus mehrere Geräte gleichzeitig entstören kann. Die alleinige Nutzung einer Diodenbrücke ist aufgrund des hohen Anteils von Stromharmonischen nicht zulässig. Diese Arbeit beschäftigt sich mit der Entwicklung eines aktiven Filters für ein Dreiphasensystem mit variabler Frequenz von 360 bis 800 Hz. Es werden alle relevanten Bauteile wie Induktivitäten, EMV-Filter, Leistungsmodule und Zwischenkreiskondensator ausgelegt. Besonderes Augenmerk liegt auf dem kundenspezifischen Modul mit SiC-Dioden und SiCMOSFETs, welches vollständig elektrisch und thermisch charakterisiert wird. Die Änderung der Netzfrequenz beträgt bis zu 50 Hz/ms, was eine hohe Dynamik und Robustheit von der Filterregelung verlangt. Weiterhin ist im statischen Fall eine hohe Genauigkeit gefordert, da die 5. und 7. Harmonische auf unter 2% geregelt werden müssen. Um beiden Anforderungen gerecht zu werden, wird ein zweistufiger Regelungsalgorithmus entwickelt der auf zwei digitalen Signalprozessoren implementiert wird. Simulationen und Labormessungen bestätigen die Robustheit des Regelungskonzeptes. Diese Arbeit stellt umfassend die Entwicklung von Luftfahrtgleichrichtern dar. Die Ergebnisse wurden in Konferenzen und Patenten veröffentlicht
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Othman, Mohd Ridzal. "DSP-based active power filter." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/6966.

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Harmonics in systems are conventionally suppressed using passive tuned filters, which have practical limitations in terms of the overall cost, size and performance, and these are particularly unsatisfactory when large number of harmonics are involved Active power filtering is an alternative approach in which the filter injects suitable compensation currents to cancel the harmonic currents, usually through the use of power electronic converters. This type of filter does not exhibit the drawbacks normally associated with its passive counterpart, and a large number of harmonics can be compensated by a single unit without incurring additional cost or performance degradation. This thesis investigates an active power filter configuration incorporating instantaneous reactive power theory to calculate the compensation currents. Since the original equations for determining the reference compensation currents are defined in two imaginary phases, considerable computation time is necessary to transform them from the real three-phase values. The novel approach described in the thesis minimises the required computation time by calculating the equations directly in terms of the phase values i. e. three-phase currents and voltages. Furthermore, by utilising a sufficiently fast digital signal processor ( DSP ) to perform the calculation, real-time compensation can be achieved with greater accuracy. The results obtained show that the proposed approach leads to further harmonic suppression in both the current and voltage waveforms compared to the original approach, due to considerable reduction in the computation time of the reference compensation currents.
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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 compensación global más utilizadas en compensadores activos y se propone un método de compensación global basado en la norma IEEE Std. 1459-2000. Se realiza un estudio comparativo de las diferentes estrategias de compensación global. Para la obtención de un compensador selectivo, se proponen dos métodos diferentes para la descomposición de las corrientes de carga y la obtención de las corrientes de compensación. El primer método está basado en la utilización de las conductancias por fase y la conductancia equivalente del sistema trifásico. El segundo se basa en la descomposición de potencias propuesta en la IEEE Std. 1459-2000. Se presenta un análisis de cada uno de los métodos propuestos. Se presenta el análisis del sistema completo para la implementación del compensador selectivo propuesto. El sistema de control incluye, la utilización de la técnica de la ventana deslizante para la obtención de las corrientes de referencia, el desarrollo de un regulador de corriente de bajo coste computacional, el diseño del regulador para el control del bus dc y el desarrollo de un nuevo modulador vectorial tridimensional 3D-3B SVPWM. Finalmente, se presentan los resultados de simulación y experimentales del sistema de compensación diseñado, para diferentes tipos de cargas y condiciones de alimentación. Parte de estos resultados han sido presentados, entre otras, en las siguientes publicaciones: " S. O
Orts Grau, S. (2008). 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 [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/3797
Palancia
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Cheng, Louis. "Efficient DSP-based active power filter." Thesis, Teesside University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410837.

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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 devices. The use of the diode bridge rectifier alone is not permitted due to the highly distorted phase current. The following investigations are dealing with the development of an active power filter for a three-phase supply with variable frequency from 360 to 800 Hz. All relevant components such as inductors, EMC-filters, power modules and DC-link capacitor are designed. A particular focus is put on the customized power module with SiC-MOSFETs and SiC-diodes, which is characterized electrically and thermally. The maximum supply frequency slope has a value of 50 Hz/ms, which requires a high dynamic and robustness on the control algorithm. Furthermore, the content of 5th and 7th harmonics must be reduced to less than 2 %, which demands a high accuracy. To cope with both requirements, a two-stage filter algorithm is developed and implemented in two independent signal processors. Simulations and laboratory experiments confirm the performance and robustness of the control algorithm. This work comprehensively presents the design of aerospace rectifiers. The results were published in conferences and patents.
Hauptziele des sogenannten "More Electrical Aircraft" (MEA) sind Effizienzerhöhung und Gewichtseinsparung. Ein Schwerpunkt hierbei ist die Nutzung von elektrischen statt hydraulischen, pneumatischen und mechanischen Systemen. Die notwendigen Leistungselektroniken haben DC-Zwischenkreise, welche mittels aktiven B6 und passiven B12 Gleichrichtern aus dem Dreiphasennetz gespeist werden. Eine mögliche Alternative ist die B6 Diodenbrücke in Kombination mit einem aktiven Netzfilter, welcher aufgrund der parallelen Anordnung eine höhere Leistungsdichte aufweist und darüber hinaus mehrere Geräte gleichzeitig entstören kann. Die alleinige Nutzung einer Diodenbrücke ist aufgrund des hohen Anteils von Stromharmonischen nicht zulässig. Diese Arbeit beschäftigt sich mit der Entwicklung eines aktiven Filters für ein Dreiphasensystem mit variabler Frequenz von 360 bis 800 Hz. Es werden alle relevanten Bauteile wie Induktivitäten, EMV-Filter, Leistungsmodule und Zwischenkreiskondensator ausgelegt. Besonderes Augenmerk liegt auf dem kundenspezifischen Modul mit SiC-Dioden und SiCMOSFETs, welches vollständig elektrisch und thermisch charakterisiert wird. Die Änderung der Netzfrequenz beträgt bis zu 50 Hz/ms, was eine hohe Dynamik und Robustheit von der Filterregelung verlangt. Weiterhin ist im statischen Fall eine hohe Genauigkeit gefordert, da die 5. und 7. Harmonische auf unter 2% geregelt werden müssen. Um beiden Anforderungen gerecht zu werden, wird ein zweistufiger Regelungsalgorithmus entwickelt der auf zwei digitalen Signalprozessoren implementiert wird. Simulationen und Labormessungen bestätigen die Robustheit des Regelungskonzeptes. Diese Arbeit stellt umfassend die Entwicklung von Luftfahrtgleichrichtern dar. Die Ergebnisse wurden in Konferenzen und Patenten veröffentlicht.
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Sedighy, Mohammad. "A robust VSC-based shunt active power filter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0002/NQ41307.pdf.

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Muthu, Subramanian. "Analysis and control of unified active power filter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37357.pdf.

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Schmit, Andrew Paul. "Hybrid Active Power Filter with Output Impedance Control." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/79684.

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In an ideal world, unwanted or undesirable effects in a system could and would be completely ignored. In fact, this was the case in mid-80s' PC design when an 80286 microprocessor running at a "blazing" 12 MHz was considered leading-edge technology. As technology continued to push the envelope and ever-faster designs were realized, more demanding software packages were developed and utilized efficiently. These increasingly sophisticated software packages in turn allowed designers of all disciplines to test systems of escalating complexity. These more complex models placed a heavier burden on the hardware, prompting a push for better and faster hardware designs. The cycle repeats to this day. As such, we are now in an environment where a 1 GHz microprocessor is considered somewhat dated. More importantly, whereas a small 1 nH (1 billionth of a Henry) inductance in a power delivery path was considered inconsequential a decade ago, it is now a barrier to implementing a design. Similarly, the equivalent series inductance (ESL) of a capacitor plays an increasing (and detrimental) role in the behavior and design of today's VRM (Voltage Regulator Module) design. In fact, it is the ESL of the capacitor that hinders proper voltage regulation at high frequencies by increasing the output impedance beyond a desired level. This dilemma has been recognized and several topologies have been proposed to overcome this problem. One category is improved passive devices, with the latest involving array capacitors to achieve near-zero ESL. As passive devices are almost always preferable to active solutions due to their lower losses, these technologies hold great promise, though they are inherently limited in small-footprint applications. A second category is the addition of active devices, which involves the use of some filtering technique to inject or absorb current during a fast transient by the use of semiconductor switches connected to a power source. These switching-state topologies have been shown to be prone to unstable oscillations, often caused by over-reactions or over-corrections of one transient prompting the opposite switch to engage its power source. The research goal is to develop a methodology to use active filters to more-seamlessly extend the control bandwidth of today's VRM technology. A hybrid active power filter is developed which uses bipolar junction transistors (BJT) in the forward-active region to connect a power supply source to the microprocessor. In this way, the switches are used in a way analogous to a dimmer switch (vs. simply 'on' or 'off'). By proper design of the compensator in the feedback loop, the active power filter can be used to suppress transients in any desired frequency range, limited only by the amplifier's current rating and bandwidth. The compensator design's derivation shows the relationship to the output impedance of the active filter. In essence, we are ‘designing' a capacitor with a very low ESL, having more desirable output impedance vs. frequency relationship than either a capacitor, or a more complicated VRM with an extended bandwidth. Using this design, however, at very high frequencies (i.e., approaching 1 GHz, or one trillion cycles per second) requires state-of-the-art packaging designs to limit unwanted impedances, and also an ultra-wide GHz bandwidth, high-current operational amplifier. Both of these barriers are outside the scope of this research. As is often the case in research efforts, we have not ‘solved' the problem, but have shifted it to a frequency range where the effect isn't problematic. Experimental results show the use of a hybrid power filter with a VRM with Adaptive Voltage Positioning (AVP) can significantly suppress voltage undershoot during fast transient load current changes. In addition, the design is modified to reduce and possibly eliminate bulk output capacitors. This provides a promising alternative to a Voltage Regulator Module with a very high control bandwidth. Lastly, simulations give an estimate of the required IC design to use an APF to augment packaging capacitors.
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Van, Greunen Corneluis Erasmus. "Neutral-point-clamped shunt active filter." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1265.

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Books on the topic "Active power filter (APF)"

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Mossoba, Joseph T. Unit-delay deadbeat control of a high bandwidth active power filter. Ottawa: National Library of Canada, 2001.

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Othman, Mohammad Ridzal. DSP-based active power filter. 1998.

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An Adaptive Hysteresis Band Current Controlled Shunt Active Power Filter. Hyderabad, India: ASDF International, 2017.

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Book chapters on the topic "Active power filter (APF)"

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Massoud, Ahmed M., Shehab Ahmed, and Ayman S. Abdel-Khalik. "Active Power Filter." In Power Electronics for Renewable Energy Systems, Transportation and Industrial Applications, 534–72. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118755525.ch17.

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Ramos, Germán A., Ramon Costa-Castelló, and Josep M. Olm. "Shunt Active Power Filter." In Digital Repetitive Control under Varying Frequency Conditions, 101–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37778-5_7.

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Sozański, Krzysztof. "Selected Active Power Filter Control Algorithms." In Digital Signal Processing in Power Electronics Control Circuits, 199–275. London: Springer London, 2017. http://dx.doi.org/10.1007/978-1-4471-7332-8_5.

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Sozański, Krzysztof. "Selected Active Power Filter Control Algorithms." In Digital Signal Processing in Power Electronics Control Circuits, 145–204. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5267-5_4.

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Chuquipiondo, Roger, Christian Flores Vega, and Julien Noel. "Parallel Adaline for Active Power Filter." In Proceedings of the 6th Brazilian Technology Symposium (BTSym’20), 703–12. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75680-2_78.

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Camilo, Fernando M., Sonia F. Pinto, Jose Fernando Silva, and Duarte M. Sousa. "Pulsed Power Current Source Inverter Based Active Power Filter." In Lecture Notes in Electrical Engineering, 283–92. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-10380-8_27.

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Gong, Fen, Xiangyang Xia, Shiwu Luo, and Feng Zhou. "High-Capacity Hybrid Active Power Filter for the Power Substation." In Advances in Intelligent and Soft Computing, 95–100. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25185-6_13.

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Mulla, M. A., R. Chudamani, and A. Chowdhury. "Performance Analysis of Series Hybrid Active Power Filter." In Lecture Notes in Electrical Engineering, 327–38. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6190-2_25.

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Chen, Zhaoling, Mingyang Wei, Guohai Liu, and Zhiling Liao. "Novel Current Control Method for Active Power Filter." In Electrical, Information Engineering and Mechatronics 2011, 499–507. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2467-2_58.

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Li, Lan, Hai Chen, and Xiaoxia Cao. "Deadbeat Control Technique Applied to Active Power Filter." In Informatics in Control, Automation and Robotics, 75–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25992-0_10.

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Conference papers on the topic "Active power filter (APF)"

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Zehao Zhou, Yufei Li, Yifan Yang, Xiangwei Huang, and Zheng Chen. "Application of 20kV high-voltage active power filter (APF)." In 2012 China International Conference on Electricity Distribution (CICED). IEEE, 2012. http://dx.doi.org/10.1109/ciced.2012.6508434.

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Shamala, N., and C. Lakshminarayana. "Performance enhancement in active power filter (APF) by FPGA implementation." In 2017 International Conference on Electrical, Electronics, Communication, Computer, and Optimization Techniques (ICEECCOT). IEEE, 2017. http://dx.doi.org/10.1109/iceeccot.2017.8284607.

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Cateriano Yáñez, Carlos, Jörg Richter, Georg Pangalos, Gerwald Lichtenberg, and Javier Sanchís Saez. "Active Power Filter Shape Class Model Predictive Controller tuning by Multiobjective Optimization." In CARPE Conference 2019: Horizon Europe and beyond. Valencia: Universitat Politècnica València, 2019. http://dx.doi.org/10.4995/carpe2019.2019.10166.

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As the share of renewable energy sources (RES) in distribution grids increases, several power quality challenges arise. Due to its intermittent nature, RES lead to voltage and frequency fluctuations in the grid that affect power quality. Moreover, as RES are connected via power converters, there is also a higher harmonic distortion pollution introduced by the switching power electronics involved, (Liang, 2017). A proven solution is the implementation of Active Power Filters (APF), which are able to compensate the unbalanced, harmonic, and reactive components of a load under different supply conditions. In order to achieve the desired compensation characteristics, the selection of an appropriate control strategy is critical, (Kumar &amp; Mishra, 2016). Classic APF control strategies achieve said goals, although with struggles under changing load scenarios with limitations on their operational modes, (Weihe, Cateriano Yáñez, Pangalos, &amp; Lichtenberg, 2018).This paper proposes the use of an advanced model-based control method, i.e. Model Predictive Control (MPC), to improve the performance of APF devices. Model-based control methods allow for better performance when the model of the plant is known before hand or through measurements, the MPC extends this further by introducing a cost function that ensures optimal operation even under constraints, (Maciejowski, 2002). References Kumar, P., &amp; Mishra, M. K. (2016). A comparative study of control theories for realizing APFs in distribution power systems. 2016 National Power Systems Conference (NPSC), 1–6. https://doi.org/10.1109/NPSC.2016.7858905 Liang, X. (2017). Emerging Power Quality Challenges Due to Integration of Renewable Energy Sources. IEEE Transactions on Industry Applications, 53(2), 855–866. https://doi.org/10.1109/TIA.2016.2626253 Maciejowski, J. M. (2002). Predictive Control with Constraints. Pearson education. Weihe, K., Cateriano Yáñez, C., Pangalos, G., &amp; Lichtenberg, G. (2018, July). Comparison of Linear State Signal Shaping Model Predictive Control with Classical Concepts for Active Power Filter Design. 167–174. Retrieved from http://www.scitepress.org/PublicationsDetail.aspx?ID=QatbWGUbqSE=&amp;t=1
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Balcells, Josep, Manel Lamich, and Gabriel Capella. "LC coupled shunt active power filter (APF): New topology and control method." In 2007 9th International Conference on Electrical Power Quality and Utilisation. IEEE, 2007. http://dx.doi.org/10.1109/epqu.2007.4424195.

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Marcílio M. dos Santos, Ângelo, Vanessa Siqueira de C. Teixeira, Ricardo Parcelle C. Pacífico, Leonardo P. S. Silva, Marcos Vinícius S. França, and Adson Bezerra Moreira. "Power Control for a Wind Power Generation from SCIG and Harmonic Current Filtering." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1051.

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The main contribution of this paper is to present a proposal for the development of an active power filter (APF) for a wind power generation system connected to the electric grid, using the three-phase induction generator with squirrel cage rotor (SCIG). In the induction generator side converter (IGSC) the power control is done by the magnetizing current and electromagnetic torque in coordinates dq. Thus, the wind system controls the active and reactive powers, as well as performing the active filtering function in the grid currents. Harmonic compensation is performed by an algorithm applied to the grid side converter (GSC). That technique improves the power quality and keeps the voltage at DC bus. The studied system was mathematically modeled and simulated using the Matlab / Simulink software. When SCIG provides 2 kW of active power, the THD from 18,94% (without APF) was reduced to 3,93% for GSC operating with APF function.
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Lamich, M., J. Balcells, D. Gonzalez, and J. Gago. "Three phase four wires LC coupled shunt active power filter (APF): New topology and control." In 2007 European Conference on Power Electronics and Applications. IEEE, 2007. http://dx.doi.org/10.1109/epe.2007.4417626.

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Xu, Lin, and Yang Han. "Effective Controller Design for the Cascaded H-Bridge Multilevel Active Power Filter (APF) for Power Quality Compensation in Distribution Utilities." In 2012 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC). IEEE, 2012. http://dx.doi.org/10.1109/appeec.2012.6306890.

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Papadopoulos, S., C. Klumpner, P. Wheeler, and M. Rashed. "A Hybrid Inverter Solution for Medium Voltage Applications using Series Capacitor and a CSI Active Power Filter (SC-APF)." In 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014). Institution of Engineering and Technology, 2014. http://dx.doi.org/10.1049/cp.2014.0456.

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Hasim, Ahmad Shukri Bin Abu, Syed Mohd Fairuz Syed Dardin, Zulkifilie Bin Ibrahim, Akram Bin Abdul Azid, and Asnor Masuan Bin Ishak. "Comparative Study; Different Types of PWM Control Scheme in Three-Phase Four-Wire Shunt Active Power Filter (APF) Topology." In 2018 International Conference on Electrical Engineering and Computer Science (ICECOS). IEEE, 2018. http://dx.doi.org/10.1109/icecos.2018.8605234.

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Cuili Chen, Zhiqiang Wang, Yulong Zhang, Guofeng Li, and Yan Wu. "A novel passive damping LCL-filter for active power filter." In 2014 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific). IEEE, 2014. http://dx.doi.org/10.1109/itec-ap.2014.6940684.

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Reports on the topic "Active power filter (APF)"

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Thangaraj, Rammohan, Sathish Kumar Shanmugam, Sivachitra Muthusamy, Radhamani Vijayakumar, Asha Aiyappan, and Hariprabhu Manoharan. Power Quality Improvement Based on Shunt Active Filter for Harmonic Suppression Using Neuro-Fuzzy. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, August 2021. http://dx.doi.org/10.7546/crabs.2021.08.12.

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Sela, Hanan, Eduard Akhunov, and Brian J. Steffenson. Population genomics, linkage disequilibrium and association mapping of stripe rust resistance genes in wild emmer wheat, Triticum turgidum ssp. dicoccoides. United States Department of Agriculture, January 2014. http://dx.doi.org/10.32747/2014.7598170.bard.

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The primary goals of this project were: (1) development of a genetically characterized association panel of wild emmer for high resolution analysis of the genetic basis of complex traits; (2) characterization and mapping of genes and QTL for seedling and adult plant resistance to stripe rust in wild emmer populations; (3) characterization of LD patterns along wild emmer chromosomes; (4) elucidation of the multi-locus genetic structure of wild emmer populations and its correlation with geo-climatic variables at the collection sites. Introduction In recent years, Stripe (yellow) rust (Yr) caused by Pucciniastriiformis f. sp. tritici(PST) has become a major threat to wheat crops in many parts of the world. New races have overcome most of the known resistances. It is essential, therefore, that the search for new genes will continue, followed by their mapping by molecular markers and introgression into the elite varieties by marker-assisted selection (MAS). The reservoir of genes for disease and pest resistance in wild emmer wheat (Triticumdicoccoides) is an important resource that must be made available to wheat breeders. The majority of resistance genes that were introgressed so far in cultivated wheat are resistance (R) genes. These genes, though confering near-immunity from the seedling stage, are often overcome by the pathogen in a short period after being deployed over vast production areas. On the other hand, adult-plant resistance (APR) is usually more durable since it is, in many cases, polygenic and confers partial resistance that may put less selective pressure on the pathogen. In this project, we have screened a collection of 480 wild emmer accessions originating from Israel for APR and seedling resistance to PST. Seedling resistance was tested against one Israeli and 3 North American PST isolates. APR was tested on accessions that did not have seedling resistance. The APR screen was conducted in two fields in Israel and in one field in the USA over 3 years for a total of 11 replicates. We have found about 20 accessions that have moderate stripe rust APR with infection type (IT<5), and about 20 additional accessions that have novel seedling resistance (IT<3). We have genotyped the collection using genotyping by sequencing (GBS) and the 90K SNP chip array. GBS yielded a total 341K SNP that were filtered to 150K informative SNP. The 90K assay resulted in 11K informative SNP. We have conducted a genome-wide association scan (GWAS) and found one significant locus on 6BL ( -log p >5). Two novel loci were found for seedling resistance. Further investigation of the 6BL locus and the effect of Yr36 showed that the 6BL locus and the Yr36 have additive effect and that the presence of favorable alleles of both loci results in reduction of 2 grades in the IT score. To identify alleles conferring adaption to extreme climatic conditions, we have associated the patterns of genomic variation in wild emmer with historic climate data from the accessions’ collection sites. The analysis of population stratification revealed four genetically distinct groups of wild emmer accessions coinciding with their geographic distribution. Partitioning of genomic variance showed that geographic location and climate together explain 43% of SNPs among emmer accessions with 19% of SNPs affected by climatic factors. The top three bioclimatic factors driving SNP distribution were temperature seasonality, precipitation seasonality, and isothermality. Association mapping approaches revealed 57 SNPs associated with these bio-climatic variables. Out of 21 unique genomic regions controlling heading date variation, 10 (~50%) overlapped with SNPs showing significant association with at least one of the three bioclimatic variables. This result suggests that a substantial part of the genomic variation associated with local adaptation in wild emmer is driven by selection acting on loci regulating flowering. Conclusions: Wild emmer can serve as a good source for novel APR and seedling R genes for stripe rust resistance. APR for stripe rust is a complex trait conferred by several loci that may have an additive effect. GWAS is feasible in the wild emmer population, however, its detection power is limited. A panel of wild emmer tagged with more than 150K SNP is available for further GWAS of important traits. The insights gained by the bioclimatic-gentic associations should be taken into consideration when planning conservation strategies.
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