Pdf active power line conditioners based on symmetrical. Introduction connection of the traditional electrical utility networks with renewable energy sources like pv, wind, diesel engine, fuel cell etc. The control system of the active power filter detects the current on the load side and the system voltage at the connection point in real time, calculates the current required for harmonic compensation. Banerjee, low cost, high performance active effectivenesscost ratio has been developed guided by an itera power line conditioners, in proc. Active power line conditioners aplc are becoming actual solutions in order to improve the power quality in the points where it is needed. Acknowledgment thank you to my lord and savior, jesus christ, who through his grace and mercy. Unified power quality conditioner upqc is one of the cp devices and it mitigates. This proposed upqc system is inject the real power to the transmission line, so the unbalanced voltage is compensate.
The term most often refers to a device that acts in one or more ways to deliver a voltage of the proper level and characteristics to enable load equipment to function properly. This controller can handle nonlinearity and is more robust. Active power line conditioner planning using an enhanced. Recently active power line conditioners aplc or active power filters apf overcome these problems and are designed for compensating the harmonics and suppressing the reactive power simultaneously. Recommendations 47 list of references 49 initial distribution list 51 vui. Active power line conditioners aplc or active power filters apf have become significant for solving power quality problems 12. Power line conditioners take in power and modify it based on the requirements of the machinery to. Voltage quality and power quality factor improvement using. An active power line conditioner is proposed for an aerospace power system that is composed of multiple paralleled power modules. Active harmonic filter harmonic correction unit eaton. In this paper, a new aplc control design based on artificial neural. Trends in active power line conditioners ieee journals. Fpga implementation of digital controller for active power line conditioner using srf theory. Since then, sola has remained at the forefront of ferroresonant power conditioning.
Fig 1 shunt active power line conditioners system the shunt active power line conditioning system contains a cascaded multilevel inverter based active filter, rlfilters, a compensation controller unitcurrent vector in conjunction with pi or pid or fuzzy logic controller and switching signal generator proposed triangularsampling current. An universal active power line conditioner ieee journals. Srf based cascaded multilevel active filter for power line. The following list is the five we think are the best right now. The hybrid converter basically is a power converter bridge with two gtos that transform it into a. Active power designs and manufactures batteryfree flywheel uninterruptible power supply ups systems and energy storage products for missioncritical power applications worldwide from its headquarters and manufacturing plant in austin tx. Proposed project paper is a novel identification disturbances signal quantities technique and then to verify the performance of the proposed identification. The active power and reactive power are calculated by averaging the voltagecurrent product at the fundamental frequency 50 hz, shown in figure 11. Voltage sag also called a dip is a brief decrease in the rms line voltage of. In this paper the attention is paid to parallel aplcs 1,2 that compensate the current demanded by a nonlinear load injecting a predetermined correction current. Design and implementation of shunt active power line. Pi, pid and fuzzy logic controlled cascaded voltage source.
The controller is the most significant part of the apf and. Pll synchronization with pid controller based shunt active. Its broad approach offers a journey that will allow power engineering professionals. Conventional pi and pid controllers have been used to extract the fundamental component of the load current thus facilitating reduction of harmonics.
However, the actual design of active power line conditioner was proposed by gyugyi and strycula in 1976. The shunt aplc system is used for harmonics and reactive power compensation due to nonlinear loads. Pdf universal and reconfigurable to ups active power. Active power line conditioning aplc is a relatively new concept that can potentially correct network distortion caused by power electronic loads by injecting equalbutopposite distortion at. Aplcs are essentially arranged into two sorts, specifically, single stage 2wire association, threestage 3wire and 4wire association arrangements to meet the. In the present work we combine pi and flc techniques for efficient power line conditioning. Design, simulation and implementation for improving power quality presents a rigorous theoretical and practical approach to active power line conditioners, one of the subjects of most interest in the field of power quality. Power protection and conditioning steven engineering. The power circuit of a general active power line conditioner aplc is based on series and shunt power converters that share a single dc link. The upqc unified power quality conditioner is utilized to compensate the power quality problem.
A power conditioner also known as a line conditioner or power line conditioner is a device intended to improve the quality of the power that is delivered to electrical load equipment. Leaders in batteryfree flywheel ups systems active power. Pdf fpga implementation of digital controller for active. Performance investigation of active power line conditioner. Active power line conditioners research and markets. This article describes the application of a hybrid power converter as an active line conditioner. Pdf the power circuit of a general active power line conditioner aplc is based on series and shunt power converters that share a single. This research paper presents a novel controller that uses pi in conjunction with fuzzy logic controller for active power line conditioner. However, there was almost no advance in active power line conditioners beyond a laboratory testing stage, because circuit technology was too. The ac voltage controller as nonlinear load and two confi.
The rating of the power converter is based on the magnitude of. Introductionthe universal active power line conditioners aplc, mainly unified power flow controllers upfc and unified power quality conditioners upqc are in a stage of hard research and increasingly applied 151, their possible functions are enlarging and include power flow control 5, 101, compensating current and voltage harmonic, voltage imbalance, reactive power, negative. New trends in active filters for power conditioning citeseerx. Phase active power line conditioners by dcvoltage control this paper analyses the influence of the prescribed dclink voltage on the filtering efficiency, in terms of current harmonic distortion after compensation, in a threephase threewire shunt active power line conditioner.
The compensation control strategy is proposed on active and non active power in the time domain based generalized fryze currents minimization theory. Proceedings of international conference on industrial electronics iecon02. Pdf universal and reconfigurable to ups active power filter. Practical implementation of a threephase active power line conditioner with anns technology. Basic principle of shunt active power line conditioner. The increasing severity of this problem has motivated the development of active power line conditioners aplcs, which are capable of compensating for reactive power and current harmonics. Abstract active power line conditioners, which are classified into shunt and series ones, have been studied with the focus on their practical installation in industrial power systems. A very complete universal line conditioner showing a high m. Upqc can work in zero active power consumption mode, active power. We decided to find the best power conditioners that provide all the attributes listed, as well as being good valueformoney. Pdf an universal active power line conditioner researchgate.
Pcs100 active voltage conditioner avc40 power and voltage. Purchase active power line conditioners 1st edition. Harmonic distorted load control in a microgrid scielo mexico. Aplcs are superior to passive filters in terms of filtering characteristics and also improve the system stability by removing resonance related problems 4. The controller is the most significant part of the apf topology and extensive research is being conducted to improve its control strategy. Shunt active power filter apf or active power line conditioner aplc is designed and implemented for power quality improvements in terms of current harmonics and reactive power compensation.
Harmonic distortion correction using active power line. The basic principle of active power line conditioner was proposed during 1970s. In 1986, a combined system of a shunt active conditioner of rating 900 kva and a shunt passive filter of rating 6600 kva was practically installed to suppress the harmonics produced by a large capacity. In 1986, a combined system of a shunt active conditioner of rating 900 kva and a. An active power filter is mainly composed of incoming line contactor, filter, igbt inverter, and control and protection, as shown in figure 9. The apf has the ability to compensate currentharmonics and reactive power simultaneously 34. Improving compensation performance in three phase active. Harmonics induce malfunctions in sensitive equipment, overvoltage by resonance, increase.
In recen t times power quality issue in industrial as well as manufacturing utilities has become a matter of serious concern due to the intensive use of power electronic equipments. This paper describes a wavelet transform technique to analyze power system harmonics. Pi with fuzzy logic controller based active power line. A novel modular approach to active powerline harmonic filtering in. Pdf design and implementation of shunt active powerline. Adaptivefuzzy controller based shunt active filter for. This paper describes an improved universal active power line conditioner designed to attenuate every disturbance in the electric power system and critical loads, except frequency variations. Active power conditioners to mitigate power quality. The shunt aplc often refers to the compensation in the current harmonics and reactive power. Mitigation of source current harmonics with shunt active. Active power filter an overview sciencedirect topics. Eaton s active harmonic filters, known as harmonic correction units hcu2 provide dynamic harmonic mitigation and power factor correction by actively injecting reactive currents into an electrical distribution system to cancel damaging harmonic currents and supporting power. In the present paper, a generic control concept for.
The widespread use of nonlinear loads in industrial, commercial and. Statcom, shunt active power line conditioner saplc i. A power conditioner is a solid investment that can have some surprising benefits such as an improvement in sound quality for inhome studios. Today, the sinewave output provided by solas ferroresonant power conditioners is essential for any solid state application. In the present paper, a generic control concept for these series and shunt converters is proposed. Akagi, trends in active power line conditioners, power electronics ieee transactions on, vol. Fuzzy logic controlled active power line conditioners for. Active power line conditioners, which are classified into shunt and series ones, have been studied with the focus on their practical installation in industrial power systems. Adalinebased controller for active power line conditioners. A power conditioner is a device intended to improve the quality of the power that is delivered to. Pcs100 avc40 active voltage conditioner is a voltage regulation or stabliser system that protects sensitive industrial and commercial loads from voltage. It is based on the instantaneous real and imaginary power. The active powerline conditioners aplcs are used to compensate the generated harmonics and to correct the load power factor. Fryze power theory with adaptivehcc based active power.
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