Design of LCL filter for grid-interfaced PV system based on cost minimization

Poongothai, C.; Vasudevan, Krishna

doi:10.1109/pedes.2016.7914283

Cited by 8 publications

(10 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 with desired attenuation factor to be around 20%. Current THD should be lower than 5% to satisfy IEEE 519 standard [36]. The initial approximation of parameters could start from 1 2 = 3, later with some slight tuning.…”

Section: Lcl Filter Designmentioning

confidence: 99%

See 1 more Smart Citation

Synthetical Optimal Design for Passive-Damped LCL Filters in Islanded AC Microgrid

Tang¹,

Zhang²,

Chai³

2021

JEPT

View full text Add to dashboard Cite

In AC microgrid systems, technical issues resulting from the power control effect are the power control method efficiency and the filter resonance since voltage-frequency interference and filtering resonance may cause significant control input reduction and oscillation. A simple and robust solution is to regulate active power flow by adding an optimal passive damping resistor. The optimal LCL filter parameterization process in this paper provides an innovative approach to obtain the optimal quality factor and the optimal damping resistor. The amplitude responses of resonant frequency and high frequency are involved in the cost function. Simulations of various cases are conducted in MATLAB/Simulink. The key advantages of this procedure include flattened admittance peak, weakened high frequency decay, and less damping loss. Through the method in this paper, the optimal passive-damped filter parameters can be calculated in an efficient manner, while the power can be regulated and tracked in a simplified way, and the performance of the control strategy is improved.

show abstract

Section: Lcl Filter Designmentioning

confidence: 99%

“…And later repeat the design procedures. Select the option with the highest attenuation to the switching frequency component [35][36][37][38][39][40][41].…”

Section: Lcl Filter Designmentioning

confidence: 99%

Synthetical Optimal Design for Passive-Damped LCL Filters in Islanded AC Microgrid

Tang¹,

Zhang²,

Chai³

2021

JEPT

View full text Add to dashboard Cite

show abstract

“…According to the parameters in Table I, the simulation is performed with respect to R-L load and sudden change of load. The output filter inductor and output filter capacitor are calculated based on the design and tradeoff between them, and it has a cutoff frequency of 1000 Hz [26]- [28].…”

Section: A R-l Load and Sudden Change Of Loadmentioning

confidence: 99%

A Sliding Mode Controller Based on Robust Model Reference Adaptive Proportional-integral Control for Stand-alone Three-phase Inverter

Esmaeili

Asadi

2021

Journal of Modern Power Systems and Clean Energy

View full text Add to dashboard Cite

This paper proposes a sliding mode controller based on robust model reference adaptive proportional-integral (RMRA-PI) control for a stand-alone voltage source inverter (SA-VSI). The proposed controller has two control loops where the coefficients of PI controller are regulated by the adaptive sliding law. This method is used to regulate the output voltage of the inverter under different load conditions and uncertainty, and adapts the output to the reference model to reduce the total harmonic distortion (THD). In this paper, the stability of the proposed controller is proven by using Lyapunov' s theory and Barbalet's lemma. The proposed controller performs well in voltage regulation such as low THD under sudden load change and uncertainty. Also, the results of the proposed controller are compared with PI controller to show the effectiveness of the presented control system. Index Terms--Robust model reference adaptive proportionalintegral (RMRA-PI) control, stand-alone inverter, three-phase inverter, voltage control, Lyapunov' 's theory.

show abstract

“…Particularly, the current control loop plays an important role, being responsible to regulate the power flow between the source and the mains, besides ensuring grid currents with low harmonic distortion and suitable dynamics (Erickson, 1997;Blaabjerg et al, 2006;IEEE, 2018). Taking into account the switched nature of the inverter, low pass filters are required as interface between converter and grid, being the LCL filter widely used since it provides higher frequency attenuation and smaller size in comparison with the L filter (Poongothai and Vasudevan, 2019).…”

Section: Introductionmentioning

confidence: 99%

Design Procedure of Current Controllers for LCL-filtered Grid-Tied Inverters with Robust Stability Certification

Osório

Koch

Garcı́a

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

View full text Add to dashboard Cite

This paper proposes an alternative design procedure for current control of LCL-filtered grid-tied inverters, taking into account robustness against uncertain and possibly timevarying grid inductances. The control strategy is developed in stationary reference frame, and is based on a partial state feedback, including an active damping scheme of the LCL filter resonance. From the system parameters and the design specifications, analytical expressions for the calculation of the control gains are provided, oriented by a pole placement in discretetime domain. These expressions are obtained neglecting the dynamics of the filter capacitor, including resonant controllers to track sinusoidal references, and taken into account the delay due to digital implementation. To certicate robust stability of the closed-loop system undertime-varying grid inductances, a theoretical analysis based on a Lyapunov function is provided. Time and frequency domain results are presented for a case study, illustrating that the proposed design strategy is able to provide robust control gains leading to grid-injected currents with suitable responses for the entire range of grid inductances considered in the design.

show abstract

Design of LCL filter for grid-interfaced PV system based on cost minimization

Cited by 8 publications

References 16 publications

Synthetical Optimal Design for Passive-Damped LCL Filters in Islanded AC Microgrid

Synthetical Optimal Design for Passive-Damped LCL Filters in Islanded AC Microgrid

A Sliding Mode Controller Based on Robust Model Reference Adaptive Proportional-integral Control for Stand-alone Three-phase Inverter

Design Procedure of Current Controllers for LCL-filtered Grid-Tied Inverters with Robust Stability Certification

Contact Info

Product

Resources

About