Analysis, design and digital implementation of a shunt active power filter with different schemes of reference current generation

Chauhan, Siddharthsingh K.; Shah, M. T.; Tiwari, Ram Ratan; Tekwani, P. N.

doi:10.1049/iet-pel.2013.0113

Cited by 113 publications

(74 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, it is also needed to provide synchronization angle for phase conversion process (Park transformation) of SRF-based harmonic extraction algorithms, as mentioned in Section 3.1.1. The existing techniques include phase-locked loops (PLLs) [19,23], zero-crossing detectors (ZCDs) [33,84], and ANN-based synchronizers [57]. SAPFs are widely known to work with balanced systems and ideal source voltages [20,57,85] because their main function is to mitigate harmonic currents generated by nonlinear loads.…”

Section: Synchronizer Algorithmmentioning

confidence: 99%

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

et al. 2017

View full text Add to dashboard Cite

Current harmonics is one of the most significant power quality issues which has attracted tremendous research interest. Shunt active power filter (SAPF) is the best solution to minimize harmonic contamination, but its effectiveness is strictly dependent on how quickly and accurately its control algorithms can perform. This manuscript reviews various types of existing control algorithms which have been employed for controlling operation of SAPF. Harmonic extraction, DC-link capacitor voltage regulation, current control and synchronizer algorithms are examined and discussed. The most relevant techniques which have been applied for each control algorithm are described and contrasted in an organized manner to identify their respective strengths and weaknesses. It is found that the applied control algorithms differ in two conditions: (1) the condition where harmonic current distortion is treated by the SAPF in the presence of non-ideal source voltage; and (2) the condition where multilevel inverter is employed as the circuit topology of SAPF.

show abstract

Section: Synchronizer Algorithmmentioning

confidence: 99%

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Reference current can be extracted using either time domain techniques like Instantaneous Reactive Power (p-q) theory, Synchronous Reference Frame (d-q) theory and perfect harmonic cancellation or frequency domain techniques like Discrete Fourier Transform (DFT) [8] …”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Current Injection Techniques for Shunt Active Power Filter

Ikramullah

Ashraf

Rehman

2018

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Abstract. Shunt Active Power Filter (SAPF) can be used for compensation of current harmonics generated by non-linear loads. The process involves an injection of equal but opposite current to mitigate the distortion current supplied back by nonlinear load to the voltage supply. Thus, the injected current will shape the supply current to a sinusoidal. SAPF consists of signal processing part and injection part. Processing part generates reference current wave and the injection part injects the reference current parallel to the load. In this paper a comparison is made between three different control strategies for current injection in threephase three-wire shunt active power filter. The current injection is performed by generating gate pulses pattern for the voltage source inverter using a suitable controller. In this paper three control techniques are compared including Hysteresis Current Control (HCC), Delta Modulation Control (DMC) and One Cycle Control (OCC). The performance of these techniques is evaluated by the accuracy of the injected current in parallel to the load by comparing the required current to be injected and the measured value of the injected current. The performance is also evaluated by measuring Total Harmonic Distortion (THD) of the source current before and after compensation. The results are evaluated and compared using Matlab/Simulink. IntroductionWith the advancement of technology, the dependency on the electrical energy has been increased greatly. The performance efficiency of different electric apparatus is directly affected by power quality. The power-quality problem is identified by a distortion in the voltage waveform of the power source from a sine wave, or in the amplitude from an established reference level [1]. Different types of disturbances that affect the power quality are voltage fluctuations, voltage sags, voltage unbalance, transients and harmonics [2].Harmonics is known to be a major issue out of all power quality problems [3]. Harmonics in the power system are increasing rapidly due to the large scale use of power electronics equipment. Harmonics can be defined as currents or voltages which are integer multiples of fundamental frequency [4]. Harmonic currents are caused by nonlinear loads connected with the distribution system. These current harmonics will be responsible for power factor reduction, power system voltage fluctuations, decrease in efficiency and interference during communications. The Harmonic currents are increasing dramatically in all residential, commercial, and industrial installations as the nonlinear loads are increasing rapidly over the past few years. Different methods [5] like K-rated transformers, separate neutral conductors, zigzag autotransformers, phase shifting, series line inductors and harmonic filters are employed for mitigation of harmonics.

show abstract

“…Most research works on SAPF adopt a general two-level voltage source inverter (VSI) topology [12][13][14]. However, multilevel inverters which have been reported to be superior to conventional two-level inverters [15][16][17] in term of output voltage quality (less harmonic distortions), are acknowledged as better alternative.…”

Section: Introductionmentioning

confidence: 99%

A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Conditions

et al. 2017

View full text Add to dashboard Cite

Abstract:In this paper, a refined reference current generation algorithm based on instantaneous power (pq) theory is proposed, for operation of an indirect current controlled (ICC) three-level neutral-point diode clamped (NPC) inverter-based shunt active power filter (SAPF) under non-sinusoidal source voltage conditions. SAPF is recognized as one of the most effective solutions to current harmonics due to its flexibility in dealing with various power system conditions. As for its controller, pq theory has widely been applied to generate the desired reference current due to its simple implementation features. However, the conventional dependency on self-tuning filter (STF) in generating reference current has significantly limited mitigation performance of SAPF. Besides, the conventional STF-based pq theory algorithm is still considered to possess needless features which increase computational complexity. Furthermore, the conventional algorithm is mostly designed to suit operation of direct current controlled (DCC) SAPF which is incapable of handling switching ripples problems, thereby leading to inefficient mitigation performance. Therefore, three main improvements are performed which include replacement of STF with mathematical-based fundamental real power identifier, removal of redundant features, and generation of sinusoidal reference current. To validate effectiveness and feasibility of the proposed algorithm, simulation work in MATLAB-Simulink and laboratory test utilizing a TMS320F28335 digital signal processor (DSP) are performed. Both simulation and experimental findings demonstrate superiority of the proposed algorithm over the conventional algorithm.

show abstract

Analysis, design and digital implementation of a shunt active power filter with different schemes of reference current generation

Cited by 113 publications

References 29 publications

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

Performance Analysis of Current Injection Techniques for Shunt Active Power Filter

A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Conditions

Contact Info

Product

Resources

About