Active Power Filter: Review of Converter Topologies and Control Strategies (original) (raw)
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Hybrid Active Power Filter Topologies for Power Quality Improvement: A Review
2019
1M.tech Student, Dept. of Electrical and Electronics Engineering, SSGI Durg-490001, Chhattisgarh, India 2M.tech Student, Dept. of Electrical and Electronics Engineering, SSGI Durg-490001, Chhattisgarh, India 3Assistant Professor, Dept. of Electrical Engineering, SSGI Durg-490001, Chhattisgarh, India ---------------------------------------------------------------------***---------------------------------------------------------------------Abstract –This paper deals with different topologies of hybrid active power filters (HAPF) along with their different control strategies. The use of active power filter and passive filter in the hybrid active power filter technology aids in elimination of harmonics and improvement of power quality where the system consists of non-linear loads. For the detailed analysis of hybrid active power filter to enhance the quality of power more than twelve research papers have been reviewed. The comprehensive study of converter topologies and various control ...
A Review of Active Power Filters InPower System Applications
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Energy, 2014
In recent years there has been considerable interest in the development and applications of active filters, at both distribution and consumer levels, and the need to control reactive power and voltage stability at transmission levels. Active power filters are the emerging devices, which can perform the job of harmonic elimination more effectively. The active power filters are used to filter out higher as well as lower order harmonics in the power system. The report deals with the basic working and classifications of active power filters, its reference signal generation techniques and some of the controlling schemes of APF. One of the key points for a proper implementation of an active filter is to use a good method for current/voltage reference generation. There exist many implementations supported by different theories proposing ever better solutions. This paper introduces some of the commonly used theories. Also for efficient working of active power filter better controlling techn...
A NEW HYBRID ACTIVE POWER FILTER (APF) TOPOLOGY k
In this paper, a new hybrid active power filter topology is presented. A higher-voltage, low-switching frequency IGBT inverter and a lower-voltage high-switching frequency MOSFET inverter are used in combination to achieve harmonic current compensation. The function of the IGBT inverter is to support utility fundamental voltage and to compensate for the fundamental reactive power. The MOSFET inverter fulfills the function of harmonic current compensation. To further reduce cost and to simplify control, the IGBT and MOSFET inverters share the same dc-link via a split capacitor bank. With this approach harmonics can be cancelled over a wide frequency range. Compared to the conventional APF topology, the proposed approach employs lower dc-link voltage and generates less noise. Simulation and experimental results show that the proposed active power filter topology is capable of compensating for the load harmonics.
Current Controllers of Active Power Filter for Power Quality Improvement: A Technical Analysis
Current Controllers of Active Power Filter for Power Quality Improvement: A Technical Analysis, 2015
Non-linear load deteriorates the quality of current waveforms at the point of common coupling of various consumers. Active power filter (APFs) is used to mitigate the most concern harmonic pollution in an electrical network. The controller part is the nucleus of an active power filter configuration. Active power filter performance is affected significantly by the selection of current control techniques. The active filter and its current control must have the capability to track sudden slope variations in the current reference to compensate the distorted current drawn by the voltage source inverter. Therefore, the choice and implementation of the current regulator is more important for the achievement of a satisfactory performance level. In this survey, technical reviews of various types of controllers covering a wide range have been presented. This work also reveals the advantages and disadvantages of the practiced control strategies. The effectiveness of the study will help the researchers to choose the proper control methods for various applications of active power filter. Link to full text journal : https://automatika.korema.hr/index.php/automatika/article/view/572
Active Power Filter For Power Quality Improvement
This paper tells the contamination issues created in power systems due to the non-linear features and fast changing of power electronic equipment. Power quality issues are turning stronger because sensitive equipment will be sorer for market competition reasons, equipment will continue contaminating the system more and more due to cost increase caused by the built-in competition and sometimes for lack of enforced regulations. Active power filter have been developed over the year to solve these problems to improve power quality. Among which Shunt active power filter (SAPF) is used to control the load current harmonics and reactive power compensation. In this work both PI controllers based Fuzzy Logic checked three-phase SAPF to pay tones and reactive power by non-linear load to improve power quality is enforced for three-phased three wire systems. Fuzzy controller is based on linguistic description and does not require a mathematical model of the system. A MATLAB program has been formulated to stimulate the system operation. Various simulation results are demonstrated under steady state considerations and performance of fuzzy and PI controllers is equated. PWM pattern generation is based on carrier less hysteresis based current control to obtain the switching indicates to the voltage sourced PWM converter.
Now-a-days with the advancement of technology, the demand for electric power is increasing at an exponential rate. Many consumer appliances demand quality power continuously for their operation. The performance of the end user equipment is heavily dependent on the quality of power supplied to it. But the quality of power delivered to the end user is affected by various external and internal factors. They are like voltage and frequency variations, faults, outages etc. These power quality problems reduce the life time and efficiency of the equipment. Thus, to enhance the performance of the consumer equipment and also the overall performance of the system these problems should be mitigated. The main affect caused by these problems is the presence of harmonics. This leads to the overheating of the equipment, insulation failure and over speeding of induction motors etc. The solution to overcome these problems is to filter out these harmonics. For this purpose there are many filters topologies present in the literature. In this project a hybrid filter which is a combination of series active filter and shunt passive filter is studied. This project presents the control strategy to control the filter in such a way that the harmonics are reduced. The proposed control strategy is simulated in MATLAB SIMULINK and the results are presented.
A Review of Active Filters for Power Quality Improvement
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.
An Advanced Current Controller Technique Based Active Power Filter for Power Quality Improvement
International Journal of Power System Operation and Energy Management, 2013
Power Quality issues are becoming a major concern for today’s power system engineers. Large scale incorporation of non-linear loads has the potential to raise harmonic voltages and currents in an electrical distribution system to unacceptable high levels that can adversely affect the system. Active power filter (APF) based on power electronic technology is currently considered as the most competitive equipment for mitigation of harmonics and reactive power simultaneously. Instantaneous power theory is used for generation of reference current. This paper presents a comparative study of the performance of three current control strategies namely ramp comparison method, hysteresis current controller (HCC) and Adaptive hysteresis current controller(AHCC) and superiority of AHCC is established. Simulation results for all the method are presented using MATLAB/SIMULINK power system toolbox demonstrating the effectiveness of using adaptive hysteresis band.
Hybrid active power filter: design criteria
Renewable Energy and Power Quality Journal, 2011
The configuration of a series active power filter (APF) and a parallel passive filter (PPF) has proven to be an efficient system for nonlinear load compensation. For this topology, different compensation strategies have been proposed to control the series APF. The most effective strategy determines the APF refrerence voltage as a proportion of the source current harmonics. The proportionality constant in the control algorithm implementation is related to the APF gain and the system dynamics. In this paper, the system state model has been obtained for three control strategies of series APF: voltage proportional to source current harmonics, voltage opposite to the load voltage harmonics and a hybrid strategy which combines both previous. The resulting model analyses provide the information needed to establish design criteria for each strategy, both in terms of harmonic filtering and the system stability. The three strategies were compared in two different situations: sinusoidal supply voltages and distorted supply voltages. Finally, results of an experimental prototype developed for this purpose allowed the proposed analysis to be verified.