LCL-filter design for grid-connected PCS using total harmonic distortion and ripple attenuation factor

2010 ◽  
Author(s):  
Min-Young Park ◽  
Min-Hun Chi ◽  
Jong-Hyoung Park ◽  
Heung-Geun Kim ◽  
Tae-Won Chun ◽  
...  
Keyword(s):  
Filter Design ◽  
Attenuation Factor ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Lcl Filter

scholarly journals LCL Filter Design for Grid-connected PCS Using Total Harmonic Distortion and Ripple Attenuation Factor

2010 ◽  
Vol 15 (3) ◽  
pp. 235-243 ◽  
Author(s):  
Jong-Hyoung Park ◽  
Min-Hun Chi ◽  
Heung-Geun Kim ◽  
Tae-Won Chun ◽  
Eui-Cheol Nho
Keyword(s):  
Filter Design ◽  
Attenuation Factor ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Lcl Filter

Decoupled Control Strategy of Grid Interactive Inverter System with Optimal LCL Filter Design

2013 ◽  
Vol 14 (5) ◽  
pp. 477-486 ◽  
Author(s):  
B. Chitti Babu ◽  
Anup Anurag ◽  
Tontepu Sowmya ◽  
Debati Marandi ◽  
Satarupa Bal
Keyword(s):  
Control Strategy ◽  
Reactive Power ◽  
Filter Design ◽  
Dynamic Performance ◽  
Harmonic Distortion ◽  
Voltage Source ◽  
Lcl Filter ◽  
Current Harmonics ◽  
Switching Losses ◽  
Active And Reactive Power

Abstract This article presents a control strategy for a three-phase grid interactive voltage source inverter that links a renewable energy source to the utility grid through a LCL-type filter. An optimized LCL-type filter has been designed and modeled so as to reduce the current harmonics in the grid, considering the conduction and switching losses at constant modulation index (Ma). The control strategy adopted here decouples the active and reactive power loops, thus achieving desirable performance with independent control of active and reactive power injected into the grid. The startup transients can also be controlled by the implementation of this proposed control strategy: in addition to this, optimal LCL filter with lesser conduction and switching copper losses as well as core losses. A trade-off has been made between the total losses in the LCL filter and the Total Harmonic Distortion (THD%) of the grid current, and the filter inductor has been designed accordingly. In order to study the dynamic performance of the system and to confirm the analytical results, the models are simulated in the MATLAB/Simulink environment, and the results are analyzed.

scholarly journals Reducing of total harmonic distortion by simulating passive filters to suppress harmonic currents with the case: Faculty of Engineering Building, Universitas Kristen Indonesia Jakarta

2021 ◽  
Vol 878 (1) ◽  
pp. 012060
Author(s):  
A D T Prasetyo ◽  
E M Silalahi ◽  
S Stepanus ◽  
B Widodo ◽  
R Purba
Keyword(s):  
Filter Design ◽  
Short Circuit ◽  
Harmonic Distortion ◽  
Maximum Load ◽  
Total Harmonic Distortion ◽  
Laboratory Equipment ◽  
Harmonic Currents ◽  
Measurement Results ◽  
Passive Filters ◽  
Sinusoidal Current

Abstract Today’s electrical appliances use power electronics to save electricity. However, this equipment generates non-sinusoidal current, causing wave defect, expressed as total harmonic distortion (THD). As the %THD increases, the greater risk of equipment damage. For this reason, the research was carried out in the Faculty of Engineering Building, Universitas Kristen Indonesia Jakarta (FT UKI Jakarta) where there are many load combinations such as computers, various types of lights, laboratory equipment such as transformers, electric motors and so on. The research was conducted using quantitative method. Data collection is carried out directly in the main panel. Based on the measurement results, the calculation of the maximum load current (IL) and short circuit (ISC) is carried out. Through these values, it can be seen that whether the odd dominant harmonic values and orders meets the IEEE 519-2014 standards or not. Calculations and analysis of the measurement results have shown that the %THDI in the FT UKI building has not meet the standard. Therefore, it is necessary to simulate the filter design to reduce the %THDI, so that the results can meets the IEEE 519-2014 standard, which is below 5%.

scholarly journals Fast Adaptive Robust Differentiator Based Robust-Adaptive Control of Grid-Tied Inverters with a New L Filter Design Method

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 360
Author(s):  
Tariq Kamal ◽  
Murat Karabacak ◽  
Fuat Kilic ◽  
Frede Blaabjerg ◽  
Luis M. Fernández-Ramírez
Keyword(s):  
Control System ◽  
Filter Design ◽  
Design Method ◽  
Time Derivative ◽  
Harmonic Distortion ◽  
Robust Adaptive Control ◽  
Total Harmonic Distortion ◽  
Experimental Result ◽  
Control Input ◽  
Filter Design Method

In this research, a new nonlinear and adaptive state feedback controller with a fast-adaptive robust differentiator is presented for grid-tied inverters. All parameters and external disturbances are taken as uncertain in the design of the proposed controller without the disadvantages of singularity and over-parameterization. A robust differentiator based on the second order sliding mode is also developed with a fast-adaptive structure to be able to consider the time derivative of the virtual control input. Unlike the conventional backstepping, the proposed differentiator overcomes the problem of explosion of complexity. In the closed-loop control system, the three phase source currents and direct current (DC) bus voltage are assumed to be available for feedback. Using the Lyapunov stability theory, it is proven that the overall control system has the global asymptotic stability. In addition, a new simple L filter design method based on the total harmonic distortion approach is also proposed. Simulations and experimental results show that the proposed controller assurances drive the tracking errors to zero with better performance, and it is robust against all uncertainties. Moreover, the proposed L filter design method matches the total harmonic distortion (THD) aim in the design with the experimental result.

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