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Observer-based grid voltage disturbance rejection for grid connected voltage source PWM converters with line side LCL filters

Nils Hoffmann, Michael Hempel, Michael C. Harke, Friedrich W. Fuchs
2012 2012 IEEE Energy Conversion Congress and Exposition (ECCE)  
This work presents an extended disturbance observer design for grid voltage disturbance rejection of voltage source PWM converters with LCL filters.  ...  The discrete state-space modeling of the LCL filter dynamics is discussed and a step-by-step observer formulation is presented.  ...  CONCLUSION This work presents an extended disturbance observer design for grid voltage disturbance rejection of voltage source PWM converters with LCL filters.  ... 
doi:10.1109/ecce.2012.6342410 fatcat:e4kqehjcnfd6vp23qabvdpyehu

A novel current controller design for grid-integrated PV inverter system

Ayaz Ahmad, L. Rajaji, A. Iqbal
2021 SN Applied Sciences  
To achieve better tracking and disturbance rejection, a DSP-based current controller is designed with LCL filter.  ...  Experimental implementation of the current controller in the DC/AC converter circuits with an LCL filter is done for 5.4 kW to validate and match the simulation model.  ...  A comprehensive design methodology of PR controller with zero steady-state error for single-phase grid-connected system is presented by [29] .  ... 
doi:10.1007/s42452-021-04290-4 fatcat:v7omt4adzvcb3mq2xnqxrvhsgi

A Proportional Resonant Controller for Suppressing Resonance in Grid Tied Multilevel Inverter

Hemakesavulu Oruganti, Subranshu Dash, Chellammal Nallaperumal, Sridhar Ramasamy
2018 Energies  
Photovoltaic (PV) resources are connected to power grid through voltage source inverters. The quality of power output from PV inverter should be in grid compliance of IEEE standard.  ...  PV MLI with grid interface should comply with the grid standard and therefore filters selection and design is critical [17, 18] .  ...  Figure 13 . 13 Bode plot for PI-D control of grid connected inverter with LCL filter. Figure 13 . 13 Bode plot for PI-D control of grid connected inverter with LCL filter.  ... 
doi:10.3390/en11051024 fatcat:nkox7shhuffohi53xtm3axwxnq

A single-phase current-source inverter with active power filter for grid-tied PV systems

I. T. Roman, L. S. Silva
2012 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)  
A systematic mathematical design procedure for PR controller parameters along with active damping factor is presented and the overall control system leads to a considerably low value of grid current THD  ...  In this work, a PV based inverter consists of a Trans-Z-Source network performing as DC-DC power conversion level, is connected to the grid through a LCL filter.  ...  In this work a control scheme for a PV based Trans-Z-Source inverter which is connected to the grid through LCL filter is proposed and also a systematic method for designing the controller parameters and  ... 
doi:10.1109/pedg.2012.6254025 fatcat:oxurroqdave4xmdapnzfrargf4

Design of Optimal LLCL Filter with an Improved Control Strategy for Single Phase Grid Connected PV Inverter

K. Arulkumar, D. Vijayakumar, K. Palanisamy
2018 International Journal of Power Electronics and Drive Systems  
The control strategy is improved with feedback linearization in order to avoid the glitches in inverter control and is verified with prototype grid connected PV inverter.  ...  Particularly, it reduces the switching ripple much better than LCL filter, with a decrease in volume of the inductance. The filter design is also developed for the operation of stiff grid.  ...  ACKNOWLEDGEMENTS This work has been supported by power system research laboratory (TT-344), School of Electrical Engineering, VIT University, Vellore.  ... 
doi:10.11591/ijpeds.v9.i1.pp114-125 fatcat:v5jwjlonrfcglpe4567dzx5yhy

Observer-Based Current Control for Converters with an LCL Filter: Robust Design for Weak Grids

F. M. Mahafugur Rahman, Usama Riaz, Jarno Kukkola, Mikko Routimo, Marko Hinkkanen
2018 2018 IEEE 9th International Symposium on Sensorless Control for Electrical Drives (SLED)  
This paper deals with state-feedback current control for power converters, which are equipped with an LCL filter and connected to a weak grid.  ...  The grid-side current is measured and other states needed by the current controller are estimated using a reduced-order observer. The control system is designed directly in the discrete-time domain.  ...  ACKNOWLEDGMENT The authors gratefully acknowledge ABB Oy, the Finnish Foundation for Technology Promotion, and the Walter Ahlström Foundation for the financial support.  ... 
doi:10.1109/sled.2018.8486047 fatcat:7tchsevxojfozaqflicbzhtd3i

Design of a grid adaptive controller for PWM converters with LCL filters

Markus Andresen, Marco Liserre, Friedrich W. Fuchs, Nils Hoffmann
2015 IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society  
The system resonance frequency of a grid connected inverter with LCL filter depends on the filter parameters and the time varying grid impedance.  ...  The actual grid impedance is estimated by an extended Kalman filter (EKF) and a Luenberger observer allows to use the same number of voltage and current sensors as in conventional PI controllers.  ...  INTRODUCTION Grid-connected PWM voltage source converters with LCL filters are widely used to feed decentralized produced energy into the electrical distribution grid [1] .  ... 
doi:10.1109/iecon.2015.7392671 dblp:conf/iecon/AndresenLFH15 fatcat:fqmoaihzdvcfbdbjcghnghor2q

Online grid-adaptive control and active-filter functionality of PWM-converters to mitigate voltage-unbalances and voltage-harmonics - a control concept based on grid-impedance measurement

N. Hoffmann, F. W. Fuchs, L. Asiminoaei
2011 2011 IEEE Energy Conversion Congress and Exposition  
and to improve the voltage-quality at the converters connection point.  ...  This work presents a control concept for a PWMconverter switching with medium-low frequencies (2.5 kHz) based on grid-impedance measurement to adapt the converters control online to variable grid-conditions  ...  Thøgersen and M. Hempel for their valuable contributions to the theoretical and practical analysis.  ... 
doi:10.1109/ecce.2011.6064182 fatcat:m3bkf7priffsncp6s3obn3fxpu

Design and Implementation of a Robust Current Controller for Single-Phase Inverters Connected Electrical Network via a damped LCL filter for Renewable Energy Systems

J.A. Borges, M. V. B. Mendonca, F.A.M. Moura, M. R. M. C. Albertini
2018 The Renewable Energies and Power Quality Journal (RE&PQJ)  
This paper deals with the design and implementation of a current controller for a single-phase voltage-fed inverter connected via an LCL filter.  ...  In this proposal, a single-phase micro-inverter connected to the power grid based on a complete bridge topology and the effects presented by the inclusion of a notch filter in the external voltage control  ...  In this paper, we discuss the design and implementation of a current controller for a single-phase inverter powered and connected through an LCL filter, see the configuration used in figure 1 .  ... 
doi:10.24084/repqj16.263 fatcat:nonik6exwrc3pkm2ru5x4srhhu

A New Robust Control for Grid Connected Photovoltaic Systems Based on Active Disturbance Rejection Control

Abdeldjabar Benrabah, Farid Khoucha, Ali Raza, Dianguo Xu
2019 Journal of Electrical Systems  
The aim of this study is to improve the stability performance of grid connected photovoltaic (PV) systems with LCL filters.  ...  Moreover, the LCL filter resonance is actively damped with a minimum complexity in the controller design, and without any adaptive algorithm.  ...  Secondly, the ADRC technique was applied for LCL filtered grid connected inverter control.  ... 
doaj:400fc4d6cccb4ade8870affcc20109cf fatcat:gb5oaiwi6zc7ndviu63zvgj4e4

Parameter Design and Power Flow Control of Energy Recovery Power Accumulator Battery Pack Testing System

Long Bo, Kil To Chong
2013 Journal of Electrical Engineering and Technology  
Firstly, operation principle and related parameter design for the system are illustrated. Secondly, control strategy of the composite power converter for PABPTS is analyzed in detail.  ...  the power grid with high efficiency.  ...  Unlike conventional power converter, such as VSC (voltage source converter)-based grid connected or CSC (current source converter)-based grid connected systems, power isolation in high power battery testing  ... 
doi:10.5370/jeet.2013.8.4.787 fatcat:alnaeljm6rc4dfx7rwwoaxd4lm

Observer-Based State-Space Current Control for a Three-Phase Grid-Connected Converter Equipped With an LCL Filter

Jarno Kukkola, Marko Hinkkanen
2014 IEEE transactions on industry applications  
This paper presents a state-space current control method for active damping of the resonance frequency of the LCL filter and setting the dominant dynamics of the converter current through direct pole placement  ...  A state observer is used, whereupon additional sensors are not needed in comparison with the conventional L filter design.  ...  Routimo for his comments, and ABB Oy, Walter Ahlström Foundation, and Finnish Foundation for Technology Promotion for the financial support.  ... 
doi:10.1109/tia.2013.2295461 fatcat:h2tmtitxwrdfdercemftuwkakm

Observer-based state-space current control for a three-phase grid-connected converter equipped with an LCL filter

Jarno Kukkola, Marko Hinkkanen
2013 2013 IEEE Energy Conversion Congress and Exposition  
This paper presents a state-space current control method for active damping of the resonance frequency of the LCL filter and setting the dominant dynamics of the converter current through direct pole placement  ...  A state observer is used, whereupon additional sensors are not needed in comparison with the conventional L filter design.  ...  Routimo for his comments, and ABB Oy, Walter Ahlström Foundation, and Finnish Foundation for Technology Promotion for the financial support.  ... 
doi:10.1109/ecce.2013.6646865 fatcat:y7zsqrcz3rghnps7qtmtaajn6a

Harmonic Mitigation in Three-Phase Power Networks with Photovoltaic Energy Sources

Mohammad Amin Chitsazan
2017 American Journal of Electrical Power and Energy Systems  
Methods and techniques described in this paper are particularly suitable for grid-connected PV power systems.  ...  An LCL filter for connection of an inverter to the grid is often used to reduce harmonics generated by the inverter.  ...  with state observer [13] .  ... 
doi:10.11648/j.epes.20170605.12 fatcat:vo5yszma7zemrpgvtmh6i553hi

Grid Stability Analysis with LCL Filter using 1-phase Inverter

2020 International journal of recent technology and engineering  
Interfacing of renewable sources with solid state non linear switching devices cause the harmonics and other disturbances on the grid.  ...  The LCL filter will reduce these harmonics and increase the quality of the grid. The application of LCL filter for weak grids is very significant in the sense of stability..  ...  Normally Non conventional sources are interfaced with grid using solid state power converters and firing controllers whether their generation type is either DC or AC .Grid stability maintenance is very  ... 
doi:10.35940/ijrte.e6865.018520 fatcat:d6zamztf5fgizesjgglaedsn2u
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