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An Improved Current Control Strategy for a Grid-Connected Inverter under Distorted Grid Conditions

Ngoc Lai, Kyeong-Hwa Kim
2016 Energies  
This paper presents an improved current control strategy for a three-phase grid-connected inverter under distorted grid conditions.  ...  To overcome such a challenge, an improved current control scheme is proposed for a grid-connected inverter, in which the fundamental and harmonic currents are independently controlled by a proportional-integral  ...  The main objective of this paper is to present a robust current control scheme for a three-phase grid-connected inverter under abnormal grid conditions like the distorted grid.  ... 
doi:10.3390/en9030190 fatcat:ee2dlmworrcdppnoecc7wq5ioi

Ultra Capacitor Based Sensorless Current Control of Grid Connected Inverter for Power Quality Improvement

M.Ramya Kiranmayee
2012 IOSR Journal of Electrical and Electronics Engineering  
This paper also presents a modified adaptive Kalman filter for sensorless current control of a three-phase inverter-based distributed generation system.  ...  This paper presents ultra capacitor based sensorless current control of a threephase inverter-based distributed generation system. a robust control scheme for high power quality grid connection of inductor-capacitor-inductor  ...  Three-Phase Current-Controlled Grid-Connected Vsi With Lcl Filter A.  ... 
doi:10.9790/1676-0311834 fatcat:kz2dixyl3jg3xddgfi2es7r57m

Review of three-phase inverters control for unbalanced load compensation

Raef Aboelsaud, A. Ibrahim, Alexander G. Garganeev
2019 International Journal of Power Electronics and Drive Systems  
<span>In the microgrid systems, three-phase inverter becomes the main power electronic interface for renewable distributed energy resources (DERs), especially for the islanded microgrids in which the power  ...  The main purpose of this paper is to represent an overview of the control strategies of various inverters for unbalanced load compensation</span>  ...  Per phase-based control strategy The per-phase control strategy can be only applied on the three phase four wire inverters which provide a neutral connection.  ... 
doi:10.11591/ijpeds.v10.i1.pp242-255 fatcat:4aim5vr43bgpjjz6dzmxcczx5e

Power Quality Improvement for Grid Connected Inverters under Distorted and Unbalanced Grids

Hyun-Sou Kim, Jung-Su Kim, Kyeong-Hwa Kim
2016 Journal of Power Electronics (JPE)  
A power quality improvement scheme for grid connected inverters, even in the presence of the disturbances in grid voltages due to harmonic distortions and three-phase imbalance, is presented for distributed  ...  The control objective is to force the inverter currents to follow their references with robustness even under external disturbances in grid voltages.  ...  Fig. 1(b) shows the equivalent circuit of a grid connected inverter with a grid connection in the synchronous reference frame.  ... 
doi:10.6113/jpe.2016.16.4.1578 fatcat:yxcslbrwrfcdrgkbqmkthgpzq4

Voltage-controlled of a three-phase current source inverter in islanded operation

Syahrul Ashikin Azmi, Grain Philips Adam, Siti Rafidah Abdul Rahim
2019 Indonesian Journal of Electrical Engineering and Computer Science  
This paper presents the performance of a three-phase current source inverter (CSI) in island mode voltage-controlled operation.  ...  However, less investigation has been done with regards to the performance of CSI especially on its control system for island and grid-connected photovoltaic system.  ...  On the other hand, since all the three phases are controlled independently, PR control is expected to give more robust performance for unbalanced loads compared to PI synchronous dq-frame control.  ... 
doi:10.11591/ijeecs.v16.i1.pp156-164 fatcat:ifoupzek4fhrbdyvfiuha5tihu

Grid current regulation of a three-phase voltage source inverter with an LCL input filter

E. Twining, D.G. Holmes
2003 IEEE transactions on power electronics  
A synchronous frame PI current regulation strategy is used for the outer grid current control loop.  ...  This paper proposes a robust strategy for regulating the grid current entering a distribution network from a three-phase VSI system connected via a LCL filter.  ...  the current into the grid using schemes such as synchronous frame controllers, Predictive Current deadbeat control, or hysteresis-based strategies.  ... 
doi:10.1109/tpel.2003.810838 fatcat:ynyuopmwzvfw3kpydukccvs7qe

FIXED POINT IMPLEMENTATION OF GRID TIED INVERTER IN DIGITAL SIGNAL PROCESSING CONTROLLER

Shuvangkar Shuvo, Eklas Hossain, Ziaur Rahman Khan
2020 IEEE Access  
Synchronous Reference Frame Phase Locked Loop (SRF-PLL) is chosen for performing grid synchronization. The feasibility of the hardware model is verified by performing simulations on Simulink.  ...  A current controlled Voltage Source Inverter(VSI) is used in the paper and a PI controller is suggested for current error compensation.  ...  Thus, for grid connected application, current control is recommended. The current controller for controlling current in the grid connected inverters are vastly classified according to Figure 4 .  ... 
doi:10.1109/access.2020.2993985 fatcat:w5fvvozwkjbfvftrj4onyg53se

Digital Control Techniques Based on Voltage Source Inverters in Renewable Energy Applications: A Review

Sohaib Tahir, Jie Wang, Mazhar Baloch, Ghulam Kaloi
2018 Electronics  
In [29], a spatial repetitive control technique is implemented for controlling the current in a single-phase inverter.  ...  topology, reference frames, filters, as well as control strategy.  ...  Reference Frames Control systems are implemented in either a single phase or a three-phase synchronous reference frame.  ... 
doi:10.3390/electronics7020018 fatcat:ixmj4fw64faqfclz5jb34b4rpa

Model Predictive Control for Shunt Active Power Filter in Synchronous Reference Frame

A.K. Al-Othman, M.E. AlSharidah, Nabil A. Ahmed, Bader. N. Alajmi
2016 Journal of Electrical Engineering and Technology  
The three phase load currents are transformed into synchronous rotating reference frame in order to reduce the order of the control system.  ...  This paper presents a model predictive control for shunt active power filters in synchronous reference frame using space vector pulse-width modulation (SVPWM).  ...  The single step predictive model of the active power filter output current in synchronous reference frame is reduced to d and d components for a balanced three phase system.  ... 
doi:10.5370/jeet.2016.11.2.405 fatcat:br3ezcaf2bdmlbhi3xhl3klbue

Control techniques for three-phase four-leg voltage source inverters in autonomous microgrids: A review

Mohammad Reza Miveh, Mohd Fadli Rahmat, Ali Asghar Ghadimi, Mohd Wazir Mustafa
2016 Renewable & Sustainable Energy Reviews  
Afterwards, the most up to date control techniques for three-phase four-leg VSIs operating in islanded microgrid from the reference frame point of view are described.  ...  Lastly, a comparative analysis is carried out where the benefits and drawbacks of each strategy are assessed, and then some suggestions are put forward for the future research.  ...  Synchronous dqo reference frame control structure The synchronous dqo reference frame is one of the well-known control structures for control of power electronic inverters in Fig. 16 .  ... 
doi:10.1016/j.rser.2015.10.079 fatcat:lxecapmcarhkpcuvridjjltbye

A Review on Integration of PV to the Grid using Current Control Techniques

Ankur Sharma
2019 International Journal for Research in Applied Science and Engineering Technology  
Grid connected voltage source inverters are essential for the integration of the distributed energy resources.  ...  However, because of its own characteristics different from conventional power generation grid connected PV power station and its security, stability, reliable operation become new challenges which power  ...  The three measured output phase currents are converted to dq components using synchronous reference frame transformation and compared to the respective reference values (ig,dq,ref ).  ... 
doi:10.22214/ijraset.2019.6374 fatcat:nmourefnfrh7zplatxrckiz5ce

A Comprehensive Motivation of Multilayer Control Levels for Microgrids: Synchronization, Voltage and Frequency Restoration Perspective

Ronald Jackson, Shamsul Aizam Zulkifli, Mohamed Benbouzid, Suriana Salimin, Mubashir Hayat Khan, Garba Elhassan, Erum Pathan
2020 Applied Sciences  
A future prediction from the authors' point of view is also provided to acknowledge which control is adequate to be adopted in proportion to their products applications and a possibility technique for  ...  The comprehensive studies of grid synchronization strategies also overviewed and analyzed under balanced and unbalanced grid conditions.  ...  Acknowledgments: The authors would like to give acknowledgement to the Advanced Control in Power Converter research group for essential assistance.  ... 
doi:10.3390/app10238355 fatcat:g3rclaj2dnaqrjajib4f34r7py

Model Predictive Current Control of Grid Connected PV Systems

Satya Ravi Rai, Jaya Kumar S V, Keerthi Deepika K
2016 Indonesian Journal of Electrical Engineering and Computer Science  
It is then fed to a 3-phase inverter. The inverter used is a 3-phase two-level inverter implemented with a Model Predictive Control strategy.  ...  Model of the system is considered in order to predict the control variables. Optimum switching state is selected by minimizing the cost function for each sampling period.  ...  Three phase voltage of grid connected inverter The grid connected inverter current waveform for 10amps Current Current Model Predictive Current Control of Grid Connected PV Systems (RS Ravi Sankar) Total  ... 
doi:10.11591/ijeecs.v2.i2.pp285-296 fatcat:weue5ifdxfgulg5invbanaqq2q

Frequency-Adaptive Current Controller Design Based on LQR State Feedback Control for a Grid-Connected Inverter under Distorted Grid

Rizka Bimarta, Thuy Vi Tran, Kyeong-Hwa Kim
2018 Energies  
This paper proposes a frequency-adaptive current control design for a grid-connected inverter with an inductive–capacitive–inductive (LCL) filter to overcome the issues relating to both the harmonic distortion  ...  To implement full-state feedback control for a grid-connected inverter with an LCL filter, all the state variables should be available.  ...  System Model of an LCL-Filtered Grid-Connected Inverter Modeling of a Grid-Connected Inverter in the Synchronous Reference Frame Whereas the SRF is used for the current controller design, the stationary  ... 
doi:10.3390/en11102674 fatcat:iwg5kyzy65eyfb7rhyl26yffvq

Mitigation of Converter-Grid Resonance, Grid-Induced Distortion, and Parametric Instabilities in Converter-Based Distributed Generation

Yasser Abdel-Rady Ibrahim Mohamed
2011 IEEE transactions on power electronics  
This paper presents a robust interfacing scheme for distributed generation (DG) inverters featuring robust mitigation of converter-grid resonance at parameter variation, gridinduced distortion, and current-control  ...  First, a predictive current controller with time-delay compensation is adopted to control the grid-side current with high-bandwidth characteristics to facilitate higher bandwidth disturbance rejection  ...  MODELING AND ANALYSIS OF THREE-PHASE CURRENT-CONTROLLED GRID-CONNECTED VSI WITH LCL FILTER A system topology of a grid-connected current-controlled VSI with a T-type LCL filter is depicted in Fig. 1 ,  ... 
doi:10.1109/tpel.2010.2070878 fatcat:5ptppttwmvakzo7npjetmh6r4a
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