Application of a Modified Single-Phase P-Q Theory in the Control of Shunt and Series Active Filters in a 400 Hz Microgrid

Correa, J.M.; Farret, Felix A.; Simões, Marcelo Godoy

doi:10.1109/pesc.2005.1581997

Cited by 23 publications

(16 citation statements)

References 11 publications

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“…Then, by calculating instantaneous powers and letting them flow in an A New Approach Based on Instantaneous Power Theory... M. Ebadian, M. Talebi, R. Ghanizadeh LPF, the harmonic and fundamental components are separated and reference currents are generated for hysteresis band controller. Conventional control systems usually include three main parts: shunt APF control, PLL and series APF control [19][20][21][22][23]. In conventional control systems, a PLL separates the positive sequence component from the unbalanced and distortional voltage of the source.…”

Section: The Proposed Methods Based On P-q Theorymentioning

confidence: 99%

“…Among these control methods, the most important and the most common control methods are the p-q and SRF theories and so far some researches have been carried out to modify these two control approaches [19][20][21]. Although, these two strategies are based on balanced three-phase systems, they can be used for single phase systems too [22,23]. In Some researches, these two control methods are combined to achieve a better performance for UPQC [24,25].…”

Section: Introductionmentioning

confidence: 99%

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A New Approach Based on Instantaneous Power Theory for Improving the Performance of UPQC Under Unbalanced and Distortional Load Conditions

2015

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In order to deal with power quality problems under distortional and unbalanced load conditions, this paper presents a new control method for a four-wire three-phase unified power quality conditioner (UPQC) which is based on instantaneous power p-q theory. The proposed control approach is based on instantaneous power and is optimized by using a self-tuning filter (STF), without using any low-pass filters (LPFs) or phase locked loop (PLL), and without measuring load or filter currents. In this approach, the load and source voltages are used to generate the reference voltages of a series active power filter (APF) and source currents are used to generate the reference currents of a shunt APF. Therefore, the number of times that current is measured is reduced and system performance is improved. The performance of the proposed control approach is evaluated in terms of power factor correction, source neutral current mitigation, load balancing and mitigation of the current and voltage harmonics of distortional and unbalanced loads in a three-phase four-wire system. The results obtained by MATLAB/SIMULINK software show the effectiveness of the proposed control technique in comparison to the conventional p-q method.Key words: Current harmonic mitigation, power quality, source neutral current mitigation, unified power quality conditioner (UPQC), voltage harmonic mitigation Novi pristup za poboljšanje karakteristika UPQC-a tijekom nesimetričnih i distorzijskih uvjeta tereta temeljen na teoriji trenutne snage. U ovom radu prikazana je nova metoda upravljanja za trofazničetverožični UPQC (engl. unified power quality conditioner) temeljena na teoriji trenutne vrijednosti snage koja je prikladna za upravljanje tijekom distorzijskih i nesimetričnih uvjeta na teretu. Predloženo upravljanje temelji se na teoriji o trenutnoj radnoj i jalovoj snazi i optimirano je korištenjem samopodešavajućeg fitera, bez korištenja niskopropusnih filtera ili PLL-a i bez mjerenja struje tereta i filtra. Korišteni su naponi na teretu i napon izvora kako bi se generirala referentna vrijednost napona aktivnog filtra, a struje izvora koriste se za generiranje referentne vrijednosti struje aktivnog filtra. Na taj način smanjen je broj mjerenja struje i sustav ima bolje značajke. Uz predloženi sustav upravljanja testire su mogućnosti korekcije faktora snage, smanjenja neutralne struje izvora, balansiranja tereta, smanjenje harmonika u struji i naponu. Rezultati dobiveni pomoću MATLAB/SIMULINK-a pokazuju učinkovitost predloženog sustava upravljanja.Ključne riječi: smanjenje harmonika u struji, kvaliteta energije, smanjenje neutralne struje izvora, UPQC, smanjenje harmonika u naponu

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Section: The Proposed Methods Based On P-q Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Approach Based on Instantaneous Power Theory for Improving the Performance of UPQC Under Unbalanced and Distortional Load Conditions

2015

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“…Fig. 4 shows the most popular UPQC system configuration to compensate the power quality problems in single-phase twowire (1P2W) supply system consisting of two H-bridge inverters (total eight semiconductor switches) [11], [23], [37], [40], [41], [53], [55], [64], [76], [79], [86], [104], [107], [145], [146], [150], [155], [156], [163]. It represents the VSI-based 1P2W UPQC topology.…”

Section: A Physical Structurementioning

confidence: 99%

“…The UPQC controller based on this modified pqr theory can be found in [49], [63], [70], [82], [116], [131], and [147]. Furthermore, both three-phase pq and three-phase dq theories have been modified such that the advantages offered by these methods are widen for single-phase APFs [172], [173] including single-phase UPQC systems [37], [55], [79], [94], [107], [108], [130].…”

Section: Control Techniques For Upqcmentioning

confidence: 99%

Enhancing Electric Power Quality Using UPQC: A Comprehensive Overview

Khadkikar¹

2012

IEEE Trans. Power Electron.

610

275

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This paper presents a comprehensive review on the unified power quality conditioner (UPQC) to enhance the electric power quality at distribution levels. This is intended to present a broad overview on the different possible UPQC system configurations for single-phase (two-wire) and three-phase (three-wire and four-wire) networks, different compensation approaches, and recent developments in the field. It is noticed that several researchers have used different names for the UPQC based on the unique function, task, application, or topology under consideration. Therefore, an acronymic list is developed and presented to highlight the distinguishing feature offered by a particular UPQC. In all 12 acronyms are listed, namely, UPQC-D, UPQC-DG, UPQC-I, UPQC-L, UPQC-MC, UPQC-MD, UPQC-ML, UPQC-P, UPQC-Q, UPQC-R, UPQC-S, and UPQC-VA m in . More than 150 papers on the topic are rigorously studied and meticulously classified to form these acronyms and are discussed in the paper.Index Terms-Active power filter (APF), harmonic compensation, power quality, reactive power compensation, unified power quality conditioner (UPQC), voltage sag and swell compensation.

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“…Among the these control methods, the most important and common control methods are p-q and SRF theories and so far some research have been done to modify these two control theory [19][20][21][22]. However, these two strategies based on balanced three phase systems can be used for single phase systems [23,24]. In Some research, these two control methods combined for better performance of UPQC [25,26].…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of UPQC under unbalanced and distortional load conditions: A new control method

Ghanizadeh

Ebadian²

2015

JAIDM

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This paper presents a new control method for a three-phase four-wire Unified Power Quality Conditioner (UPQC) to deal with the problems of power quality under distortional and unbalanced load conditions. The proposed control approach is the combination of instantaneous power theory and Synchronous Reference Frame (SRF) theory which is optimized by using a self-tuning filter (STF) and without using load or filter currents measurement. In this approach, load and source voltages are used to generate the reference voltages of series active power filter (APF) and source currents are used to generate the reference currents of shunt APF. Therefore, the number of current measurements is reduced and system performance is improved. The performance of proposed control system is tested for cases of power factor correction, reducing source neutral current, load balancing and current and voltage harmonics in a three-phase four-wire system for distortional and unbalanced loads. Results obtained through MATLAB/SIMULINK software show the effectiveness of proposed control technique in comparison to the conventional p-q method.

show abstract

Application of a Modified Single-Phase P-Q Theory in the Control of Shunt and Series Active Filters in a 400 Hz Microgrid

Cited by 23 publications

References 11 publications

A New Approach Based on Instantaneous Power Theory for Improving the Performance of UPQC Under Unbalanced and Distortional Load Conditions

A New Approach Based on Instantaneous Power Theory for Improving the Performance of UPQC Under Unbalanced and Distortional Load Conditions

Enhancing Electric Power Quality Using UPQC: A Comprehensive Overview

Improving the performance of UPQC under unbalanced and distortional load conditions: A new control method

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