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
More filters
05 Jun 2006
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..."
...d) Method 4-Fourier transforms method In [12]-[13] the authors present Fourier transform based algorithm for generating the reference source current....
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01 Jan 2009
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.
22 citations
TL;DR: In this article, a 3-phase shunt active power filter (SAPF) is designed for compensation of harmonics resulted in the feeder current owing to the customer side nonlinearity.
Abstract: Shunt active power filter (SAPF) belongs to the class of custom power devices (CPDs) and offers compensation to harmonics originated owing to customer side nonlinear loads, reactive power and unbalance in the distribution power networks functioning in current control mode (CCM). The performance of a SAPF as a harmonic compensator entirely relies on the control technique i.e. the precise detection of the harmonic current components of load that are necessary to be compensated. In the present work, a 3-phase SAPF, inspired by a Lyapunov function based control approach, has been designed for compensation of harmonics resulted in the feeder current owing to the customer side nonlinearity. A control law is determined in the proposed strategy which makes the derivative of the Lyapunov function consistently a negative one for an entire set of stable states. The DC-link capacitor voltage is regulated at constant reference through the proportional-integral (PI) controller. In this method rating of the shunt active power filter is considerably reduced than the other two broadly employed conventional methods. Furthermore, the harmonic compensation efficacy of the proposed Lyapunov function based SAPF is compared with the one based on other two conventional approaches under four different system scenarios namely a simple nonlinear load with and without utility side voltage distortion, a modified IEEE 13 bus test distribution system loaded with a 3-phase chopper fed direct current (DC) motor drive at a single bus and last especially for increasing the harmonic-constrained penetration level of renewable energy. Results obtained through simulation performed in MATLAB/Simulink shows that total harmonic distortion (THD) of source current and dynamic, as well as steady-state performance with Lyapunov function based controller, is significantly improved than the other two conventional methods. Also, the robust compensation performance of the SAPF empowers it to deal with the high penetration of renewable energy.
18 citations
01 Feb 2016
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.
6 citations
Cites background from "A Fast Transient Response Single Ph..."
...The increasing importance of efficiency of distribution system has resulted in constant growth of use of devices for example drives of variable-speed motor and shunt capacitors connection for improvement of power-factor to minimize transmission losses [2-4]....
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03 May 2015
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..."
...The DC capacitor must be precharged from supply to maintain its voltage close to the supply reference value [11]...
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...Active filters are relatively new and different topologies are being proposed [11] [12] [13] [14] [15]....
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References
More filters
TL;DR: Simulation results indicate that the signal processing unit can provide the required signals for APF to perform filtering/compensation within the transient period of 2 to 3 cycles.
Abstract: A signal processing system for extraction of harmonic and reactive current components is introduced and its performance is evaluated. The extraction system is adopted as part of the control system of a single-phase active power filter (APF) to provide the required signals for harmonic filtering and reactive power compensation. Performance of the overall system is evaluated based on digital time-domain simulation studies. The APF control system including the signal processing algorithms are implemented in Matlab/Simulink Fixed-Point Blockset to accommodate bit-length limitation which is a crucial factor in digital implementation. The power system including the APF, load and the supply system are simulated with the PSCAD/EMTDC software to which the Matlab-based control model is interfaced. The simulation results indicate that the signal processing unit can provide the required signals for APF to perform filtering/compensation within the transient period of 2 to 3 cycles.
112 citations
07 Nov 2002
TL;DR: The theory of instantaneous reactive power compensation of single-phase circuits is presented in this paper, which is a general case of well-known pq theory and it is usable in single phase as well as three phase circuits.
Abstract: The theory of instantaneous reactive power compensation of single-phase circuits is presented. This theory is a general case of well-known pq theory and it is usable in single-phase as well as three-phase circuits. A new definition of instantaneous active and reactive powers in single-phase circuits that is based on space vector concept is also presented. The principle of operation is explained using analytical analysis. The validity of the presented method and its comparison with original pq theory is studied through simulation results.
94 citations
TL;DR: In this paper, a least compensation current technique was proposed to detect the harmonic and reactive current for active power filters and a novel active power filter based on the least compensated current control was proposed.
Abstract: A new least compensation current technique to detect the harmonic and reactive current for active power filters is presented in this paper. With the technique, a novel active power filter based on the least compensated current control is proposed, in which the measurement of harmonic and reactive current and the generation of compensated current are completed in the same closed-loop. Compared with the existing control methods of active power filter, the proposed method has simpler structure, quicker dynamic, higher reliability and better compensation performance. Simulating and experimental results are provided that verified theoretical predictions and demonstrate the effectiveness of the proposed control method and circuit configuration.
72 citations
28 Oct 2002
TL;DR: In this article, a new definition of single-phase instantaneous active power p(t) and reactive power q(t), is used in control circuits, and the principle of operation is explained using analytical and simulation results.
Abstract: The single-phase pq theory is used for instantaneous reactive power and current harmonics compensation of single-phase loads. A new definition of single-phase instantaneous active power p(t), and reactive power q(t), is used in control circuits. Generation of reference compensating current of single-phase active filter is based on canceling the alternating component of p(t) for harmonic compensation and q(t) for reactive power compensation. The principle of operation is explained using analytical and simulation results.
67 citations
02 Apr 2002
TL;DR: In this paper, a new method of analysis, synthesis and experimentation of single-phase power active filters is proposed, which is based on the idea that the ordinary single phase quantity can be complemented by a fictitious second phase, so that both of them will create orthogonal system, as is usual in three-phase systems.
Abstract: The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. Using a new particular transformation theory the ordinary single-phase system can be transformed into equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented by fictitious second phase, so that both of them will create orthogonal system, as is usual in three-phase systems. Application of above theory makes possible to use complex methods of analysis as instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. The paper shows some examples of the simulation verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single-phase active parallel filter.
54 citations