A Versatile Control Scheme for a Dynamic Voltage Restorer for Power-Quality Improvement

Roncero‐Sánchez, Pedro; Acha, E.; Ortega-Calderon, Jose Enrique; Feliú, V.; García-Cerrada, Aurelio

doi:10.1109/tpwrd.2008.2002967

Cited by 147 publications

(47 citation statements)

References 22 publications

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“…In [20] voltage sag detection algorithm and control algorithm synthesis of DVR are proposed. The proposed control scheme includes the grid synchronization algorithm based on the double synchronous reference frame PLL (DSRF-PLL), the reference compensation voltages generation, the shunt converter control algorithm and the series inverter control algorithm.…”

Section: Review Of Proposed Control Schemes For Dynamic Voltage mentioning

confidence: 99%

Dynamic Voltage Restorer and Review of Control Schemes Proposed For Dynamic Voltate Restorer

Patil¹

2014

IOSRJEEE

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Section: Review Of Proposed Control Schemes For Dynamic Voltage mentioning

confidence: 99%

Dynamic Voltage Restorer and Review of Control Schemes Proposed For Dynamic Voltate Restorer

Patil¹

2014

IOSRJEEE

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“…Voltage sags may be caused by switching actions associated with impermanent disconnection of supply, the progression inrush current associated with the commencing of induction motor loads or steady stream of fault currents due to short circuit faults which includes single line to ground fault in a power system (SLG). These kinds of phenomena would probably originate from the customers system or from a public supply network [8,9]. Voltage swells are brief magnifications in root mean square voltage between 1,1 pu and 1,8 pu at the power frequency amounts of time from 0,5 cycles in 1 minute.…”

Section: Introductionmentioning

confidence: 99%

Power quality enhancement in induction motor drives by using custom power device

Manokaran¹

2015

Teh. vjesn.

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Original scientific paper This paper focuses on the advancement of electric power quality tendencies of an induction motor as well as alleviating the consequence on account of the prolonged duration voltage discrepancy and also quite a short time period voltage variance of these kinds of that over voltage, under voltage continuous interruption, impermanent voltage fall together with voltage climb or maybe an entire disappearance of voltage. The proposed alleviating device is a brand new topology of a dynamic voltage restorer (DVR). A DVR is often familiar to alleviating the impact of unusually high voltage variations while making use of a highly effective custom electric power equipment that is to say dynamic voltage restorer. It contains an electric power storage device, filtration systems, voltage source inverters and also injection transformer. There are numerous categories of regulating approaches being employed for mitigation of abnormal voltages. The proposed control approach to DVR will be based upon the 'abc to dqo' conversion methodology employed. The demonstration outcomes can be found in several circumstances of sag, swell and additional harmonic disorder in the supply voltage which exhibits the reimbursement abilities of DVR. The performance of suggested strategy is examined with the aid of computer demonstration through the use of MATLAB/SIMULINK software. Keywords: distribution system; dynamic voltage restorer; power quality; unbalanced and distorted load; voltage sags and swells; voltage source inverter Poboljšanje kvalitete električne energije u pogonima indukcijskih motora uporabom prilagođenog pogonskog uređajaIzvorni znanstveni članak Rad se bavi nastojanjima za poboljšanje kvalitete električne energije indukcijskog motora kao i ublažavanjem posljedica zbog dulje neujednačenosti napona i također kratkog trajanja takvih promjenljivosti napona, stalnih prekida napona, neujednačenog pada i porasta napona ili možda i potpunog nestanka napona. Predloženi uređaj za ublažavanje ovih pojava je sasvim nova topologija dinamičkog obnavljača napona (dynamic voltage restorer (DVR). DVR ublažava djelovanje neuobičajeno velikih promjena napona i koristi visoko učinkovit prilagođen električni uređaj, t.j. dinamički obnavljač napona. Sastoji se od uređaja za akumuliranje električne energije, sustava za filtriranje, pretvarača izvora napona i ispravljača ubrizgavanja. Postoje brojni regulatori za ublažavanje abnormalnih napona. Predloženi pristup DVR-u temeljit će se na primijenjenoj metodologiji konverzije 'abc do dqo'. Primjeri za demonstraciju mogu se naći u nekoliko slučajeva slabljenja, rasta i dodatnog harmonijskog nereda u naponu na kojima se pokazuju mogućnosti DVR-a. Izvršenje predložene strategije ispitano je pomoću demonstracije na računalu uporabom softvera MATLAB/SIMULINK.Ključne riječi: dinamički obnavljač napona; kvaliteta električne energije; neuravnoteženo i izobličeno opterećenje; pad i porast napona; pretvarač izvora napona; sustav raspodjele

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“…Therefore, control strategies such as predictive control [4], sliding mode [5] and robust control [6] are used in order to control injected voltage. Also in [7] and [8] are used H ∞ controller and a controller based on iteration are used for having better operation in steady and transient states respectively. Also emotional controller is implemented as an adaptive controller in [9] for DVR control.…”

Section: Introductionmentioning

confidence: 99%

Modifying Power Quality's Indices of Load by Presenting an Adaptive Method based on Hebb Learning Algorithm for Controlling DVR

et al. 2014

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Original scientific paperHaving electricity with high quality is one of the more important aims in electrical systems. Disturbances in distribution systems can change voltage waveform. There are some methods to prepare high power quality for sensitive loads. In this research we use "Dynamic Voltage Restorer" to compensate the harmful effects of disturbances on voltage. Since power systems fundamentally have complicated dynamic behavior, especially during faults, "Hebb" learning self-tuning controller, which is a powerful adaptive controller, has been used. In order to improve the performance of this controller from point of view of power quality's indices, such as flash and sensitive load voltage THD, a new structure is proposed for this controller with fuzzification method. Simulation results indicate better operation of the system for the case of proposed controller. Voltage sag and harmonics in faulty conditions are both improved by the proposed controller. According to simulation results, it works better than both classical PI controller and conventional Hebb learning controller.Key words: DVR, Sensitive load, Power quality, Fuzzy membership function, Multi-objective Hebb learning algorithm, Self-tuning controller Promjena indikatora kvalitete električne energije trošila predstavljanjem adaptivne metode za upravljanje DVR-om zasnovane na Hebbovom algoritmu učenja. Jedan od važnijih ciljeva elektroenergetskog sustava visoka je kvaliteta električne energije. Poremećaji u distribucijskom sustavu mogu neželjeno izmijeniti valni oblik napona. Postoji nekoliko metoda kako osigurati visoku kvalitetu energije za osjetljiva trošila. U istraživanju koristimo "dinamičku obnovu napona" za kompenziranje štetnih efekata poremećaja u naponu. Kako energetski sustavi u osnovi imaju složeno dinamičko ponašanje, posebno tijekom kvarova, korišten je vrlo moćan adaptivni regulator: "Hebbov" samopodešavajući regulator sa sposobnošću učenja. Da bi se unaprijedilo vladanje spomenutog regulatora s aspekta indikatora kvalitete energije kao što su parcijalna izbijanja i THD osjetljivog trošila, predložena je nova struktura regulatora s uključenim metodama neizrazite logike. Simulacijski rezultati pokazuju bolji rad sustava uz korištenje predloženog regulatora. Regulator smanjuje propade napona i poboljšava harmonični sastav sustava u kvarnim uvjetima. Rezultati simulacija tako er pokazuju bolje ponašanje u odnosu na uobičajeni PI regulator te konvencionalni Hebbov regulator s učenjem.

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A Versatile Control Scheme for a Dynamic Voltage Restorer for Power-Quality Improvement

Cited by 147 publications

References 22 publications

Dynamic Voltage Restorer and Review of Control Schemes Proposed For Dynamic Voltate Restorer

Dynamic Voltage Restorer and Review of Control Schemes Proposed For Dynamic Voltate Restorer

Power quality enhancement in induction motor drives by using custom power device

Modifying Power Quality's Indices of Load by Presenting an Adaptive Method based on Hebb Learning Algorithm for Controlling DVR

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