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Control of Distributed Generators and Direct Harmonic Voltage Controlled Active Power Filters for Accurate Current Sharing and Power Quality Improvement in Islanded Microgrids

Hafiz Mudassir Munir, Rami Ghannam, Hong Li, Talha Younas, Noorbakhsh Amiri Golilarz, Mannan Hassan, Abubakar Siddique
2019 Inventions  
First, based on the existing THD level of the PCC voltage, the proposed scheme provides improved voltage compensation and reduction in THD in the islanded microgrid.  ...  Thus, in this paper, the power quality improving method is discussed, with a target of load sharing under the hierarchical control of different DG units and an active power filter (APF) in microgrids.  ...  Special thanks to Chuan Xie and JianXiao Zou to contribute their efforts in reviewing and editing the manuscript.  ... 
doi:10.3390/inventions4020027 fatcat:xsgia2hvmbexfeg3eiparb3p3u

Cooperative control with virtual selective harmonic capacitance for harmonic voltage compensation in islanded microgrids

A. Micallef, M. Apap, C. Spiteri-Staines, J. M. Guerrero
2012 IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society  
Voltage Compensation in Islanded MicroGrids Micallef, A.; Apap, M. ; Spitero-Stanies, C.; Guerrero, Josep M. Abstract -This paper focuses on the islanded operation of microgrids.  ...  Simulation results are presented showing the suitability of the proposed algorithm in dampening the PCC voltage harmonics.  ...  In islanded mode, the inverters participating in regulating the voltage and frequency of the microgrid form a weak grid. Harmonic current flow thus causes voltage distortion to appear at the PCC.  ... 
doi:10.1109/iecon.2012.6389037 dblp:conf/iecon/MicallefASG12 fatcat:hdo6oey36fgxfj7a4omtbyc2rm

Reactive Power Sharing and Voltage Harmonic Distortion Compensation of Droop Controlled Single Phase Islanded Microgrids

Alexander Micallef, Maurice Apap, Cyril Spiteri-Staines, Josep M. Guerrero, Juan C. Vasquez
2014 IEEE Transactions on Smart Grid  
Experimental results were then presented to show the suitability of the proposed algorithms in achieving reactive power sharing and in improving the voltage harmonic distortion at the PCC.  ...  Algorithms with the aim to address the following limitations in islanded operation were proposed: reactive power sharing and reduction of the voltage harmonic distortion at the point of common coupling  ...  Algorithms with the aim to address the reactive power sharing problem and to reduce the voltage THD at the PCC in islanded operation were proposed and verified experimentally.  ... 
doi:10.1109/tsg.2013.2291912 fatcat:phpbcesptjh6rjmofsfwmip4em

An Enhanced Power Sharing Scheme for Voltage Unbalance and Harmonics Compensation in an Islanded AC Microgrid

Yang Han, Pan Shen, Xin Zhao, Josep M. Guerrero
2016 IEEE transactions on energy conversion  
In this paper, an enhanced hierarchical control structure with multiple current loop damping schemes for voltage unbalance and harmonics compensation in ac islanded microgrid is proposed to address unequal  ...  The distributed generation (DG) is properly controlled to autonomously compensate voltage unbalance and harmonics while sharing the compensation effort for the real power, reactive power, unbalance and  ...  CONCLUSION This paper proposes an enhanced power sharing scheme for voltage unbalance and harmonics compensation in an islanded microgrid.  ... 
doi:10.1109/tec.2016.2552497 fatcat:2rhxawldazaabkm4okn6pytotm

Mitigation of Harmonics in Grid-Connected and Islanded Microgrids Via Virtual Admittances and Impedances

Alexander Micallef, Maurice Apap, Cyril Spiteri-Staines, Josep M. Guerrero
2015 IEEE Transactions on Smart Grid  
The paper also considers the harmonic current sharing and resulting voltage harmonics at the PCC during islanded operation of the microgrid.  ...  A capacitive virtual impedance loop was implemented to improve the harmonic current sharing and attenuate the voltage harmonics at the PCC.  ...  The paper also considers the harmonic current sharing and resulting voltage harmonics at the PCC during islanded operation of the microgrid.  ... 
doi:10.1109/tsg.2015.2497409 fatcat:mbe6cducrbelbmltko3lerhybq

Coordinated virtual resistance and capacitance control scheme for accurate reactive power sharing and selective harmonic compensation in islanded microgrid

Minh-Duc Pham, Hong-Hee Lee
2020 IET Generation, Transmission & Distribution  
Line impedance mismatch and unregulated harmonic currents cause serious problems for an islanded microgrid, such as inaccurate reactive power sharing and voltage distortion at the point of common coupling  ...  Thanks to the proposed control scheme, the PCC harmonic voltage distortion is successfully compensated and power-sharing among DG units is accurately achieved.  ...  When the microgrid is isolated from the main grid, it operates in an islanded mode, and all DG units employ the droop control algorithm to support the load power and maintain a constant microgrid voltage  ... 
doi:10.1049/iet-gtd.2020.0581 fatcat:3y4gfomzy5hz7j5nvpab7h5nwi

Selective virtual capacitive impedance loop for harmonic voltage compensation in islanded MicroGrids

Alexander Micallef, Maurice Apap, Cyril Spiteri-Staines, Josep M. Guerrero
2013 IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society  
Spiteri-Staines, and J. M. Guerrero, "Selective virtual capacitive impedance loop for harmonic voltage compensation in islanded micogrids," in Proc. IEEE IECON 2013, Vienna, 2013  ...  Parallel inverters having LCL output filters cause voltage distortions at the point of common coupling (PCC) in islanded microgrids when non-linear loads are present.  ...  The droop gains for the inverters operating in the islanded microgrid, denoted by m n and n n from (1) and (2) respectively (where the subscript n is an integer denoting an inverter in the microgrid  ... 
doi:10.1109/iecon.2013.6700464 dblp:conf/iecon/MicallefASG13 fatcat:avwemgjigrbpdp5k2vg5qoijbi

A Control Strategy of Islanded Microgrid With Nonlinear Load for Harmonic Suppression

Qiang Chen
2021 IEEE Access  
Active power-frequency (P-f) and reactive power-voltage magnitude (Q-V) droop control is usually applied in the parallel operation of the inverters in islanded microgrid, which can realize the power sharing  ...  A control strategy of islanded microgrid is proposed in this paper against the harmonic circulation of the inverters and the Point of Common Coupling (PCC) voltage harmonic distortion of the microgrid  ...  of the PCC voltage harmonic distortion and affects the power quality of the microgrid.  ... 
doi:10.1109/access.2021.3064413 fatcat:2otnl664ofg5fdqiosugcwhamu

Mitigation of voltage and current harmonics in grid-connected microgrids

Mehdi Savaghebi, Josep M. Guerrero, Alireza Jalilian, Juan C. Vasquez
2012 2012 IEEE International Symposium on Industrial Electronics  
In this paper, a control approach is proposed for selective compensation of main voltage and current harmonics in grid-connected microgrids.  ...  The control system of each DG comprises harmonic compensator, power controllers, voltage and current controllers and virtual impedance loop.  ...  The method of [5] has been proposed for compensation of voltage harmonics in an islanded microgrid. This method is also based on the resistance emulation.  ... 
doi:10.1109/isie.2012.6237331 dblp:conf/isie/SavaghebiGJV12 fatcat:okeahl4prved7pzynpah66th6m

Voltage harmonic distortion compensation with non-linear load power sharing in low-voltage islanded microgrid

Hassan Moussa, Jean-Philippe Martin, Serge Pierfederici, Farid Meibody-Tabar, Nazih Moubayed
2018 Mathematics and Computers in Simulation  
h-harmonic power generated by DG i . h-harmonic positive gain. Selective h-harmonic voltage distortion. !  ...  Proportional h-harmonic distortion gain. " Proportional gain of the harmonic droop. #, Damping factor and cutoff frequency of lowpass filter.  ...  Introduction In an islanded microgrid, Distributed Generation (DG) units use the droop method as a decentralized control to share the active and reactive power in proportion to their rated power [1] -  ... 
doi:10.1016/j.matcom.2018.05.007 fatcat:nfjn33ygbffpto4n6cbdqytbqa

Consensus‐based distributed control scheme for PCC voltage harmonic mitigation and enhanced power sharing in islanded microgrids

Minh‐Duc Pham, Hong‐Hee Lee
2021 IET Generation, Transmission & Distribution  
In the islanded microgrid, it is necessary to distribute the harmonic powers correctly among generators and mitigate the voltage harmonics at the point of common coupling (PCC) for effective microgrid  ...  To simultaneously improve the microgrid voltage quality and share the distortion powers, a consensus-based distributed powersharing scheme is proposed along with PCC harmonics mitigation.  ...  Analysing of PCC voltage harmonic mitigation and harmonic power sharing In order to analyse the islanded microgrid easily, the simplified equivalent circuit of two generators is established using the Thevenin  ... 
doi:10.1049/gtd2.12207 fatcat:clfcz2z7craupas73akhl3mlpi

Selective compensation of voltage harmonics in grid-connected microgrids

Mehdi Savaghebi, Juan C. Vasquez, Alireza Jalilian, Josep M. Guerrero, Tzung-Lin Lee
2013 Mathematics and Computers in Simulation  
In this paper, a novel approach is proposed for selective compensation of main voltage harmonics in a gridconnected microgrid.  ...  The control system design is discussed in detail. The presented simulation results demonstrate the effectiveness of the proposed method in compensation of the voltage harmonics to an acceptable level.  ...  The idea of resistance emulation is originally proposed in [2] for active power filters. A method for compensation of voltage harmonics in an islanded microgrid has been presented in [24] .  ... 
doi:10.1016/j.matcom.2012.05.015 fatcat:56erdhao6rfx3itcy7qcqn3fxi

Virtual admittance loop for voltage harmonic compensation in microgrids

Cristian Blanco, David Reigosa, Juan Carlos Vasquez, Josep M. Guerrero, Fernando Briz
2015 2015 IEEE Energy Conversion Congress and Exposition (ECCE)  
The use of the virtual admittance concept for harmonic and/or unbalance compensation in microgrids when multiple inverters operate in parallel is proposed in this paper.  ...  in current control mode (e.g. current regulated voltage source inverters, VSI-CCM).  ...  content and unbalances from the PCC voltage in islanded microgrids.  ... 
doi:10.1109/ecce.2015.7309764 fatcat:b7vjxjui5rhfdbr64pfmayhboy

Virtual Admittance Loop for Voltage Harmonic Compensation in Microgrids

Cristian Blanco, David Reigosa, Juan C. Vasquez, Josep M. Guerrero, Fernando Briz
2016 IEEE transactions on industry applications  
The use of the virtual admittance concept for harmonic and/or unbalance compensation in microgrids when multiple inverters operate in parallel is proposed in this paper.  ...  in current control mode (e.g. current regulated voltage source inverters, VSI-CCM).  ...  content and unbalances from the PCC voltage in islanded microgrids.  ... 
doi:10.1109/tia.2016.2547362 fatcat:f5flpgsr2ncrncdcwlvrj3zrfa

Hierarchical control for voltage harmonics compensation in multi-area microgrids

Mohammad M. Hashempour, Mehdi Savaghebi, Juan C. Vasquez, Josep M. Guerrero
2015 2015 IEEE 10th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)  
Based on the secondary control, voltage compensation of Points of Common Coupling (PCCs) of multi-area microgrid is carried out by DGs.  ...  In this paper, the power quality of multi-area microgrids is addressed. For this, Active Power Filters (APFs) and Distributed Generators (DGs) inverters are used.  ...  In this line, the present paper considers voltage harmonic compensation of islanded microgrids.  ... 
doi:10.1109/demped.2015.7303723 fatcat:44npvr4fbnazjgy5qfuaebscvm
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