Power Electronic Hybrid System for Load Balancing Compensation and Frequency-Selective Harmonic Suppression

Luo, An; Peng, Shuangjian; Wu, Chuanping; Wu, Jingbing; Shuai, Zhikang

doi:10.1109/tie.2011.2161066

Cited by 92 publications

(49 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, many publications [48-56, 60-74, 80-81, 129] have been reviewed on three-phase power quality conditioners suitable for railway traction with many control strategies. In the three-phase power quality conditioners, active filters can be connected in series, shunt [48][49][50][51][52][53][54][55][56][57], combination of series and shunt called unique power quality conditioners [80][81] and passive filters combined with active filters [60][61][62][63][64][65][66][67][68][69][70][71][72][73][74]129] are being used.…”

Section: State Of the Artmentioning

confidence: 99%

“…Many publications for flicker [39][40]59] and many other publications [57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74] [35,63,64], Multilevel Direct PWM (122) and Prony Algorithms [48] to improve the dynamic and steady state performance of power quality conditioners.…”

Section: State Of the Artmentioning

confidence: 99%

“…Power quality conditioners for railway traction based on topology are classified as passive filter [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33], active filter in series [50,56] shunt [37,38,40,43,46,47,49,51,52,54,55,108] and combination of active filter and passive filters connected in shunt known as hybrid filters [36,43,60,62,63,65,66,67,69,70,71,73,74,107,119], half bridge [112], TCR with fixed capacitors [108,129] TCR with passive …”

Section: Classification Based On Topologymentioning

confidence: 99%

“…Compensating commands for frequency domain are extracted from distorted voltage and current signals through Fourier analysis [56,67,72,73,75] and Lyapunov function [61,62,66]. The harmonic polluted signals are analyzed using Fourier or Lyapunov transformation, and the compensating harmonic components are derived.…”

Section: Compensation Through Frequency Domainmentioning

confidence: 99%

“…The second [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] is about passive filters and designing of the selftuned filters used in railway traction. The third and fourth [57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74] deal with active filters and hybrid active filters used for power quality problems like power factor, reactive power and harmonic compensation in railway traction. The fifth [75][76][77][78][79][80][81] focuses on unified power quality conditioner, which suits various power quality problems such as power factor, reactive power compensation, voltage and load imbalance.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Power Quality Conditioners for Railway Traction—a Review

Gunavardhini¹,

Chandrasekaran²

2016

Automatika

View full text Add to dashboard Cite

Original scientific paperRailway traction is a more stochastic heavy load connected system. Due to the usage of ac-dc converters and ac-ac converters, the various power quality issues become the major problems in the electric system. This paper presents a review on power quality conditioners suitable for Railway traction based on the configuration, components involved and on the technical and economic considerations. More than 120 publications are listed in the reference for quick review. Poboljšanje kvalitete snage za željezničke sustave -pregled istraživanja. Željeznički električni sustav je prilično stohastički sustav s velikim opterečenjem. Zbog korištenja AC/DC i AC/AC pretvarača, problemi s kvalitetom isporučene energije predstavljaju glavne probleme električnih sustava. U ovome radu predstavljen je pregled područja vezano uz poboljšanje kvalitete energije za željezničke sustave ovisno o konfiguraciji, komponentama uključenim te o tehničkim i ekonomskim aspektima. Više od 120 radova navedeno je u popisu literature.Ključne riječi: metode za poboljšanje kvalitete energije, kompenzacija haromonika i reaktivne snage, aktivni filtri, šant hibridni filtar, kvaliteta energije

show abstract

Section: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

Section: Classification Based On Topologymentioning

confidence: 99%

Section: Compensation Through Frequency Domainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Power Quality Conditioners for Railway Traction—a Review

Gunavardhini¹,

Chandrasekaran²

2016

Automatika

View full text Add to dashboard Cite

show abstract

A new hybrid filter based on differential current control method for low-order harmonic suppression in Tokamak power system

Lü

et al. 2017

Int J Energy Res

View full text Add to dashboard Cite

SummaryWith high-power, high-parameter operation of Tokamak device, not only characteristic harmonics but also much noncharacteristic harmonics, especially below the third-order harmonics, present in its power supply system. These low-order harmonics, which further amplified by the capacitive impedance in system, will endanger the reliable operation of Tokamak device and the power supply. Although Tokamak devices have taken some filtering measures, the resonance of low-order harmonics could not be completely prevented. In this paper, a hybrid filter based on differential current control method is proposed, which can effectively increase the filtering capability. The hybrid filter was mainly analyzed and validated in EAST power supply system. The results show that it can restrain the resonance and suppress low-order harmonics in the system and can be extended to large-capacity occasions.KEYWORDS differential current control, hybrid filter, low-order harmonic suppression, Tokamak power system 1 | INTRODUCTION Tokamak, which uses strong magnetic field to confine plasma in the shape of a torus achieving a stable plasma equilibrium, may be the ultimate solution on the energy crisis. The Tokamak devices such as EAST, KSTAR, ASDEX-U and others aim to reach higher plasma current and longer plasma sustaining time under high performance operation (H-mode) during experiments. To achieve such high performance of plasmas, extreme high demand of the power, usually at the order of hundreds of MVA, is required for the power supplies system, as well as the fast transients. 1 Thyristor-based converters are widely selected for the majority of the Tokamak power supplies due to the high current rating and the DC voltage/current characteristics. However, such complex operation mode will directly lead to the asymmetry of the converter firing angles, sharp fluctuations of current amplitude and phase in the AC system, direct current bias of transformer and dynamic harmonic coupling between AC and DC network. 2 These will usually stimulate low-order harmonic in the AC side, for instance, second, third, or even inter harmonics. 3 The power suppliers will draw large reactive power pulses from the grid, and reactive power control is necessary for voltage stabilization and compensation together with filters to eliminate harmonics generated by the power converters. The improper design of the filters will result in the harmonic application in the low frequency (75-135 Hz) domain. These low-order harmonics can jeopardize Tokamak system operation and the security of the grid.

show abstract