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Proceedings ArticleDOI

Current and voltage harmonics acquisition and obtaining reference currents for an Single Phase shunt Active Power Filter

TL;DR: In this article, the insulation and conditioning cards for sensors that measure voltage and current signals for to be applied to harmonic control and compensation in an Active Power Filter (APF) are presented.
Abstract: This paper presents the design and implementation of the insulation and conditioning cards for sensors that measure voltage and current signals for to be applied to harmonic control and compensation in an Active Power Filter (APF). Then describes the characteristics and mathematical algorithm in the time domain technique used to obtain the reference current applied to digital control of a Shunt Single Phase Active Power Filter. Finally presents the simulation and integration of the instrumentation system with the algorithm to obtain reference currents implemented in a Digital Signal Processor (DSP) 56F8323 of Freescale®.
Citations
More filters
Journal ArticleDOI
15 Sep 2020
TL;DR: In this paper, a new control strategy to improve the performance of shunt active power filter (SAPF) in three-phase four-wire system when operating under an unbalanced system is presented.
Abstract: This paper presents a new control strategy to improve the performance of shunt active power filter (SAPF) in three-phase four-wire system when operating under an unbalanced system. A control method based on the instantaneous power theory have been used and discussed. On the other side, a threedimensional hysteresis current controller is used to track the compensated current references. This scheme requires the service of a phased-locked loop (PLL) to make the system insensitive to the distortions that are generally present in the utility voltages. The performance of the proposed topology under the used control approach has been finally discussed through the obtained simulation results.

1 citations


Cites background from "Current and voltage harmonics acqui..."

  • ...Active power filters for three-phase systems without neutral conductor have been successfully developed, and nowadays some commercial products are already available [3]....

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Proceedings ArticleDOI
Meijun Mu1, Shihui Liu1, Fei Lin1, Zhongping Yang1, Ikuo Yasuoka2 
01 Aug 2017
TL;DR: In this article, a method of active filter applied to an auxiliary four-quadrant converter of electric locomotive or high speed train is presented, where the auxiliary power supply system is designed to generate an inverse harmonic current at AC side to produce the high frequency compensating current.
Abstract: This paper presents a method of active filter applied to auxiliary four- quadrant converter of electric locomotive or high speed train. In this technique, auxiliary power supply system is designed to generate an inverse harmonic current at AC side to produce the high frequency compensating current. So the auxiliary four- quadrant converter should operate at a high speed with the application of SiC devices. The results and effectiveness of the scheme is verified by simulation.

1 citations


Cites background from "Current and voltage harmonics acqui..."

  • ...While active power filter (APF) has harmonic-rejection capabilities when frequency is fluctuating in system [2]- [4]....

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Proceedings ArticleDOI
01 Sep 2019
TL;DR: Three-level four-legged active power filter based on neutral-point-clamped (NPC) inverter is presented to fulfill the requirement of the active power filtering function under balanced, unbalance and distorted power supply voltages.
Abstract: Reactive and harmonic currents that are being injected in the power supply by nonlinear loads, cause an increasing deterioration of the power system voltages and currents. Whereas active power filter (APF) have been widely used to overcome this problem and to improve the power quality delivered by the power supply. In this paper, three-level four-legged active power filter based on neutral-point-clamped (NPC) inverter is presented. To fulfill the requirement of the active power filtering function under balanced, unbalance and distorted (including 3rd and 5th harmonics) power supply voltages, A control methods based on the instantaneous power theory have been used and discussed. On the otherside, the inverter switching state control has been achieved based on PWM current controller. The performance of the proposed topology under the used control approach has been finally discussed through the obtained simulation results.

Cites background from "Current and voltage harmonics acqui..."

  • ...Unfortunately, the proliferation of these devices are considered to be among the main causes that are leading to several power quality problems, especially the generation of different harmonics components that are contributing in several serious problems, such as [1], [2], [3]:...

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References
More filters
Journal ArticleDOI
TL;DR: In this paper, a new instantaneous reactive power compensator comprising switching devices is proposed, which requires practically no energy storage components, and is based on the instantaneous value concept for arbitrary voltage and current waveforms.
Abstract: The conventional reactive power in single-phase or three- phase circuits has been defined on the basis of the average value concept for sinusoidal voltage and current waveforms in steady states. The instantaneous reactive power in three-phase circuits is defined on the basis of the instantaneous value concept for arbitrary voltage and current waveforms, including transient states. A new instantaneous reactive power compensator comprising switching devices is proposed which requires practically no energy storage components.

3,331 citations

Journal ArticleDOI
TL;DR: This paper presents a comprehensive review of active filter configurations, control strategies, selection of components, other related economic and technical considerations, and their selection for specific applications.
Abstract: Active filtering of electric power has now become a mature technology for harmonic and reactive power compensation in two-wire (single phase), three-wire (three phase without neutral), and four-wire (three phase with neutral) AC power networks with nonlinear loads. This paper presents a comprehensive review of active filter (AF) configurations, control strategies, selection of components, other related economic and technical considerations, and their selection for specific applications. It is aimed at providing a broad perspective on the status of AF technology to researchers and application engineers dealing with power quality issues. A list of more than 200 research publications on the subject is also appended for a quick reference.

2,311 citations


"Current and voltage harmonics acqui..." refers background in this paper

  • ...Los Filtros Activos de Potencia (FAP) en derivación son sistemas electrónicos de potencia que han sido diseñados para compensar armónicos de corriente, su topología y esquema de control han permitido que además compensen potencia reactiva, desequilibrio en las cargas, corrientes en neutros, desequilibrios de tensión, regulación de voltaje, parpadeo de voltaje y caídas o sobretensiones en la red [1,2,5]....

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Book
01 Jan 2007
TL;DR: The p-q theory in three-phase, four-wire Shunt Active Filters as discussed by the authors has been applied to power flow control in power electronics equipment and has been shown to be useful in many applications.
Abstract: Preface. 1. Introduction. 1.1. Concepts and Evolution of Electric Power Theory. 1.2. Applications of the p-q Theory to Power Electronics Equipment. 1.3. Harmonic Voltages in Power Systems. 1.4. Identified and Unidentified Harmonic-Producing Loads. 1.5. Harmonic Current and Voltage Sources. 1.6. Basic Principles of Harmonic Compensation. 1.7. Basic Principles of Power Flow Control. References. 2. Electric Power Definitions: Background. 2.1. Power Definitions Under Sinusoidal Conditions. 2.2. Voltage and Current Phasors and the Complex Impedance. 2.3. Complex Power and Power Factor. 2.4. Concepts of Power Under Non-Sinusoidal Conditions -Conventional Approaches. 2.5. Electric Power in Three-Phase Systems. 2.6. Summary. References. 3 The Instantaneous Power Theory. 3.1. Basis of the p-q Theory. 3.2. The p-q Theory in Three-Phase, Three-Wire Systems. 3.3. The p-q Theory in Three-Phase, Four-Wire Systems. 3.4. Instantaneous abc Theory. 3.5. Comparisons between the p-q Theory and the abc Theory. 3.6. Summary. References. 4 Shunt Active Filters. 4.1. General Description of Shunt Active Filters. 4.2. Three-Phase, Three-Wire Shunt Active Filters. 4.3. Three-Phase, Four-Wire Shunt Active Filters. 4.4. Shunt Selective Harmonic Compensation. 4.5. Summary. References. 5 Hybrid and Series Active Filters. 5.1. Basic Series Active Filter. 5.2. Combined Series Active Filter and Shunt Passive Filter. 5.3. Series Active Filter Integrated with a Double-Series Diode Rectifier. 5.4. Comparisons Between Hybrid and Pure Active Filters. 5.5. Conclusions. References. 6 Combined Series and Shunt Power Conditioners. 6.1. The Unified Power Flow Controller (UPFC). 6.2. The Unified Power Quality Conditioner (UPQC). 6.3. The Universal Active Power Line Conditioner (UPLC). 6.4. Summary. References. Index.

2,038 citations


"Current and voltage harmonics acqui..." refers background in this paper

  • ...A continuación se describe el método de obtención de corrientes de referencia implementados para el control del FAP propuesto: el método de obtención de corrientes de referencia que utiliza la teoría de la potencia activa y reactiva instantánea p-q [8,9]....

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Journal ArticleDOI
TL;DR: In this article, the authors present the present status of active filters based on state-of-the-art power electronics technology, and their future prospects and directions toward the 21st Century, including the personal views and expectations of the author.
Abstract: Attention has been paid to active filters for power conditioning which provide the following multifunctions: reactive power compensation; harmonic compensation; flicker/imbalance compensation; and voltage regulation. Active filters in a range of 50 kVA-60 MVA have been practically installed in Japan. In the near future, the term "active filters" will have a much wider meaning than it did in the 1970s. For instance, active filters intended for harmonic solutions are expanding their functions from harmonic compensation of nonlinear loads into harmonic isolation between utilities and consumers, and harmonic damping throughout power distribution systems. This paper presents the present status of active filters based on state-of-the-art power electronics technology, and their future prospects and directions toward the 21st Century, including the personal views and expectations of the author.

1,700 citations

Journal ArticleDOI
01 Sep 2000
TL;DR: There has been considerable interest in the development and applications of active filters because of the increasing concern over power quality, at both distribution and consumer levels, and the need to control reactive power and voltage stability at transmission levels as mentioned in this paper.
Abstract: There has been considerable interest in the development and applications of active filters because of the increasing concern over power quality, at both distribution and consumer levels, and the need to control reactive power and voltage stability at transmission levels. The existing approaches are classified and assessed to provide a framework of references for both researchers in this field and for generators, suppliers and consumers of electrical power who are, or may be, concerned about the problems associated with power quality and are considering installing active filters for their particular sets of problems.

668 citations


"Current and voltage harmonics acqui..." refers background in this paper

  • ...Los Filtros Activos de Potencia (FAP) en derivación son sistemas electrónicos de potencia que han sido diseñados para compensar armónicos de corriente, su topología y esquema de control han permitido que además compensen potencia reactiva, desequilibrio en las cargas, corrientes en neutros, desequilibrios de tensión, regulación de voltaje, parpadeo de voltaje y caídas o sobretensiones en la red [1,2,5]....

    [...]