Design and simulation of four-leg based three-phase four-wire shunt active power filter

Barva, Akash V.; Bhavsar, Priyank R.

doi:10.1109/iccict.2018.8325868

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…The reverse current produced by the inverter is introduced into the system to compensate for the harmonic currents; these currents are obtained using the p-q theory. To achieve neutral current compensation, two main topologies are used: (i) inverters to generate voltages; (ii) Inverters with two midpoint capacitors and a four-arm inverter (used as an active filter) (Barva et al 2018;Kumar et al 2022;Collins et al 2022;Zhang et al 2022;Challa et al 2022). Mainly, the four-wire shunt active filters, with three phases, have three branches with two switches controlled by the PWM technique and the fourth leg is on standby and has two switches controlled by the PWM technique.…”

Section: Description and Modeling Of The Studied Microgrid Systemmentioning

confidence: 99%

A four-line active shunt filter to enhance the power quality in a microgrid

Mostefa

Belalia

Lantri

et al. 2023

Int. J. Renew. Energy Dev.

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In recent years, power quality has become a major concern for electric network managers. Active filtering control schemes ensure improved power quality of the electric network and are able to maintain a desired voltage level at the point of connection, regardless of the current absorbed by nonlinear loads. Harmonics can cause vibrations, equipment distortion, losses and sweatiness in transformers. The main objective of this work is to enhance the quality of energy in a microgrid consisting of 100 kW photovoltaic (PV) system and a 50 kW battery storage connected to nonlinear and unbalanced loads. This paper proposes a the four-arm parallel active filter with a on Proportional-Integral (PI) controller to mitigate the harmonic problems in a microgrid. In addition, an algorithm has been designed to eliminate the neutral current. The identification function is one of the most particular approach for extracting harmonics, it involves providing a current reference imposed by the active filter in order to carry out the filtering operation. Both the performance and the quality of the current harmonic compensation's depend strongly on the strategy adopted for the generating the current reference. In this work, the instantaneous power strategy p-q is chosen outstanding the simplicity and effectiveness in implementation. The proposed control strategy has been tested under simulations and the results have shown good tracking of the references and a significant reduction in the Total Harmonic Distorsion (THD) level under highly unbalanced conditions of the nonlinear loads. The current THD is reduced from 43.64 before filtering to 3.74% after the application of the four-arm filter, following the recommendations of IEEE-519 standard (THD less than 5%).

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Section: Description and Modeling Of The Studied Microgrid Systemmentioning

confidence: 99%

A four-line active shunt filter to enhance the power quality in a microgrid

Mostefa

Belalia

Lantri

et al. 2023

Int. J. Renew. Energy Dev.

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“…Formula (22) is subjected to Laplace transform, and the solvedẑ 1 ,ẑ 2 ,ẑ 3 are brought into Formula (21) to obtain Formula (23). The system is regarded as a subsystem with two inputs and one output, where the inputs are r and y and the outputs are u.…”

Section: Frequency Domain Analysismentioning

confidence: 99%

“…However, the construction of nonlinear functions and complex parameters tuning limits the widespread use of nonlinear ADRC in industry. To this end, ADRC has been simplified to linear form (LADRC) in [18] and has been used in power systems and power electronics [19][20][21].The above method only considers that current distortion is not severe, but most of the loads are nonlinear in practical production. If grid-connected current control strategy is used in the power system without harmonic suppression, the power quality at PCC will not meet the standards set by the International Electrotechnical Commission (IEC).…”

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A Novel Strategy Based on Linear Active Disturbance Rejection Control for Harmonic Detection and Compensation in Low Voltage AC Microgrid

et al. 2019

Energies

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In an AC microgrid, harmonic distortion is mainly caused by power electronic equipment and nonlinear loads. In this paper, linear active disturbance rejection control (LADRC) is used to control the fundamental current at the point of common coupling (PCC). Meanwhile, an active power filter (APF) is added to eliminate the harmonic current generated by the nonlinear loads. The tracking differentiator (TD) in active disturbance rejection control (ADRC) serves as a low-pass filter (LPF) in the harmonic detection algorithm of APF. Compared to traditional harmonic detection algorithms, the improved strategy solves the contradiction between rapidity, accuracy, and overshoot of filtering. LADRC has good performance of disturbance rejection, internal decoupling, and accessible parameters tuning. It can observe the internal uncertainty and external disturbance of the system as the total disturbance through the extended state observer (ESO), and compensate it in time through state feedback to make the system achieve the desired performance. The abilities of resonance suppression for LCL-type filter and internal decoupling of LADRC demonstrates its advantages through frequency domain analysis and simulation. The proposed strategy was simulated in MATLAB/SIMULINK and realized in the experimental hardware platform, and the effectiveness of the proposed strategy is approved.

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“…Devido a maior abrangência e aceitabilidade das topologias VSC convencionais [57][58][59][60], que fazem uso de um capacitor para composição do elo CC, nesta dissertação ter-se-á apenas aplicações e estudos em conversores com esta estratégia de conversão.…”

Section: Fig 34 -Diagrama De Um Filtro Ativo Shunt Do Tipo Vscunclassified

Uma contribuição à aplicação dos filtros ativos em sistemas elétricos de potência

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Agradeço primeiramente a Deus, pela força, graças e bênçãos concedidas ao longo de minha vida. Aos meus pais Júlio César e Kennia Márcia, bem como meu irmão Vinícius, pelo apoio, carinho e suporte durante todo este trajeto. A minha namorada, Beatriz, pelo carinho, suporte, força e alegrias proporcionadas sempre. Ao professor, orientador e amigo Ivan Nunes Santos, pela confiança, comprometimento, apoio e amizade, que ajudaram a idealizar e realizar esse trabalho. Aos amigos do Núcleo de Qualidade de Energia Elétrica e demais laboratórios de pesquisa, em especial os de maior convivência no dia a dia:

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Design and simulation of four-leg based three-phase four-wire shunt active power filter

Cited by 12 publications

References 11 publications

A four-line active shunt filter to enhance the power quality in a microgrid

A four-line active shunt filter to enhance the power quality in a microgrid

A Novel Strategy Based on Linear Active Disturbance Rejection Control for Harmonic Detection and Compensation in Low Voltage AC Microgrid

Uma contribuição à aplicação dos filtros ativos em sistemas elétricos de potência

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