A Fast Transient Response Single Phase Active Power Filter
01 Nov 2005-pp 1-6
TL;DR: In this article, a fast dynamic response single phase active power filter is proposed, compensating the nonlinear load by improving the power factor to the desired value and also eliminating the harmonics.
Abstract: In this paper a fast dynamic response single phase active power filter is proposed. The method proposed, compensates the non-linear load by improving the power factor to the desired value and also eliminates the harmonics. The scheme is shown to work for both types compensation i.e. power factor correction plus harmonic elimination and harmonic elimination only under sinusoidal and non-sinusoidal supply voltage conditions. The active power filter (compensator) is realized using a single-phase voltage source inverter operated in a hysteresis current control mode. The method is validated through digital simulation results using MATLAB. The results have been shown with ideal and practical compensator with an emphasis on dynamic performance.
Citations
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TL;DR: A comparative study of different algorithms for extracting reference compensating current for single-phase shunt active power filter finds different type of approaches, both direct and indirect methods, in detail.
Abstract: A comparative study of different algorithms for extracting reference compensating current for single-phase shunt active power filter is presented. The paper discusses different type of approaches, both direct and indirect methods, in detail. The performance of these algorithms is investigated giving an emphasis to the transient performance of the active power filter.
31 citations
Cites methods from "A Fast Transient Response Single Ph..."
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TL;DR: In this article, a simple control scheme of single-phase shunt active power filter for current harmonics and reactive power compensation of linear and non-linear loads, is proposed, which is based on uncomplicated reference source current generation and fuzzy logic based dc bus voltage regulation methods.
Abstract: In this paper, a simple control scheme of single-phase shunt active power filter for current harmonics and reactive power compensation of linear and non-linear loads, is proposed. Simplicity of the proposed control scheme is based on uncomplicated reference source current generation and fuzzy logic based dc bus voltage regulation methods. Thus, complex computations are not needed. To indicate reactive power and current harmonics compensation capability in both transient and steady state, leading and lagging power factor linear loads and uncontrolled rectifier and thyristor based ac regulator non-linear loads are connected to the system. The effectiveness of the proposed control technique is verified by the simulation results.
21 citations
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TL;DR: This paper investigates the harmonic content generated by some household appliances and suggests a solution to minimize harmonics by means of active filtering.
Abstract: Due to the increasing trend towards energy saving white goods appliances and the commercial viability of power electronic components, there has been an expansion in the use of solid state electronics and variable frequency drive motors in these applications. However, a major drawback of using such energy efficient loads is the introduction of current harmonics onto the local distribution grid. Furthermore, the proliferation of such devices elevates the supply harmonic content and can potentially impact residential distribution networks. This paper investigates the harmonic content generated by some household appliances and suggests a solution to minimize harmonics by means of active filtering. An active filter circuit was simulated to compare filter performance when used as an active front versus a feeder input compensator.
5 citations
Cites background from "A Fast Transient Response Single Ph..."
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TL;DR: In this paper, the performance of five control techniques for reference currents extraction of D-STATCOM under balanced, unbalanced and distorted voltage condition is compared in Matlab/Simulink environment.
Abstract: The most important concern regarding a power system is the quality of its power. The main cause of most of the issues is nonlinear loads only. D-STATCOM has turned out to be a good solution to solve this problem because of its ability to compensate reactive power and harmonic components demand of the nonlinear loads. This paper presents comprehensive analysis of comparison the performance of five control techniques for reference currents extraction of D-STATCOM under balanced, un-balanced and distorted voltage condition. The algorithms to be compared are symmetrical components based algorithm, IRP theory, generalized IRP theory, SRF method, and synchronous detection method respectively those are widely used in D-STATCOM. These all algorithms have been simulated in Matlab/Simulink environment. The theoretical study and simulation testing shows the performance and accuracy of considered algorithms in case of balanced unbalanced and distorted source voltage conditions.
4 citations
Cites background from "A Fast Transient Response Single Ph..."
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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®.
3 citations
Cites background from "A Fast Transient Response Single Ph..."
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References
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TL;DR: In this paper, an active power filter for single-phase power systems which are comprised of multiple nonlinear loads is presented. But the spectral performance of the active filter is not evaluated.
Abstract: This paper presents active power filters for single-phase power systems which are comprised of multiple nonlinear loads. The paper provides background on the operation of the filter, the details of the power circuit, the details of the control design, representative waveforms, and spectral performance for a filter which supports a 384 W AC controller and a 900 W uncontrolled bridge rectifier. Experimental data indicate that the active filter typically consumes 3% or less of the average load power, suggesting that a parallel filter is an efficient compensation approach. The spectral performance shows that the active filter brings the system into compliance with IEC-555 for decision frequencies in excess of 30 kHz. A discussion is presented outlining an alternative single-phase active filter which uses two controllable switches and is based on a half-bridge topology. >
210 citations
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01 May 1996
TL;DR: In this article, a simplified control method for the single-phase active power filter is proposed, which has the advantages of using only one current sensor, a simple control circuit and low implementation cost.
Abstract: A simplified control method for the single-phase active power filter is proposed. This method has the advantages of using only one current sensor, a simple control circuit and low implementation cost. A model of this method is derived. A prototype is also developed to demonstrate the performance of this method. The test results show that the proposed active power filter has the expected performance.
181 citations
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01 Jan 1996
TL;DR: In this article, an active power filter (APF) is proposed to control the voltage of an energy-storage capacitor, which employs a new control method, using an integration and sampling technique, to simplify the calculation algorithm for load current.
Abstract: The paper presents an active power filter (APF) circuit which employs a new control method, using an integration and sampling technique, to simplify the calculation algorithm for the real fundamental component of load current. In addition, a new simple control scheme, based on the energy balance concept, is proposed to control the voltage of an energy-storage capacitor. Since the energy change in the energy-storage capacitor can be compensated in the next cycle, and a larger DC bus voltage ripple can be tolerated if a sampling technique is used, a relatively smaller energy storage capacitor is required. The advantages of this APF circuit are simplicity of control circuits, low cost (a smaller energy-storage capacitor) and good transient response. In theory, the time delay for the compensation of reactive power and harmonic currents is zero. The feasibility of this theory is veriffied by using a PSPICE simulation and experimental results.
180 citations
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TL;DR: A simple and effective method for calculating the reference current necessary to feed a shunt active power filter to compensate the power factor and harmonic currents generated by a nonlinear load is described.
Abstract: A basic criterion that determines the behavior of an active power filter is the method of calculating the reference current. There are many ways of generating this reference, but the methods are generally complex and hard to tune. This paper describes a simple and effective method for calculating the reference current necessary to feed a shunt active power filter to compensate the power factor and harmonic currents generated by a nonlinear load. Simulations and experimental results are presented, showing that the proposed circuit may operate at frequencies ranging from 40 to 65 Hz without adjustment.
140 citations
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TL;DR: In this article, a control strategy of the single-phase active filter using a novel d-q transformation is proposed, which is implemented by using Hilbert transform, by which the instantaneous single phase voltage and current are converted into complex vectors (analytic signals) on the instantaneous basis.
Abstract: In this paper, a control strategy of the single-phase active filter using a novel d-q transformation is proposed This d-q transformation is implemented by using Hilbert transform, by which the instantaneous single-phase voltage and current are converted into complex vectors (analytic signals) on the instantaneous basis Since the fundamental components of voltages and currents are converted into DC components on the d-q coordinate both in the steady and transient states, the harmonics of voltages and currents can be obtained precisely through the low-pass filer installed on the d-q coordinate This results in the economical active filter with a small capacitor suppressing the DC bus voltage fluctuation because the fundamental power can be fully removed from the active filter input
135 citations
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