Coordinated control of multifunctional inverters for voltage support and harmonic compensation in a grid-connected microgrid

Mousavi, Seyyed Yousef Mousazadeh; Jalilian, Alireza; Savaghebi, Mehdi; Guerrero, Josep M.

doi:10.1016/j.epsr.2017.10.016

Cited by 49 publications

(18 citation statements)

References 31 publications

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“…On other hand, the multifunctional CCM inverters are proposed for harmonics compensation in microgrids and distribution systems [25][26][27][28][29][30][31]. In [29,30], the harmonics compensation is achieved by direct compensation of the non-linear load harmonic current. The methods of [28,29] can be applied only when non-linear loads and DG interfacing inverters are near to each other.…”

Section: Introductionmentioning

confidence: 99%

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Secondary‐control‐based harmonics compensation scheme for voltage‐ and current‐controlled inverters in islanded microgrids

Mousavi

Jalilian

Savaghebi

et al. 2020

IET Renewable Power Generation

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Section: Introductionmentioning

confidence: 99%

“…The methods of [28,29] can be applied only when non-linear loads and DG interfacing inverters are near to each other. Using virtual impedance is proposed in [30,31] for harmonics compensation. In this method, harmonics compensation is achieved by measuring voltage and creating a low impedance path for harmonics current.…”

Section: Introductionmentioning

confidence: 99%

Secondary‐control‐based harmonics compensation scheme for voltage‐ and current‐controlled inverters in islanded microgrids

Mousavi

Jalilian

Savaghebi

et al. 2020

IET Renewable Power Generation

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“…To resolve this issue, DC micro-grids have attracted the attention of the researchers [9][10][11][12][13]. Furthermore, skin effect losses are not present in DC micro-grids and the control of DC micro-grids is less complex as compared to AC micro-grids, where issues of frequency regulation and synchronization, flow of reactive power, unwanted harmonics and unbalanced load are the key issues [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Fixed Frequency Sliding Mode Control of Power Converters for Improved Dynamic Response in DC Micro-Grids

2018

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The rapid decrease in conventional energy resources and their harmful impact on the environment has brought the attention of the researchers towards the use of renewable energy technologies. The renewable energy systems are connected to Direct Current (DC) micro-grids via power electronic converters where the load conditions are unknown and network parameters are uncertain. These conditions call for the use of robust control techniques such as Sliding Mode Control (SMC) in order to regulate the grid voltage. However, SMC has a drawback of operating the power converter at variable switching frequency which results in degrading the power quality. This paper introduces a fixed frequency sliding mode controller that does not suffer from this predicament. A novel double integral type switching manifold is proposed to achieve voltage regulation of a DC micro-grid, in the presence of unknown load demands and un-modeled dynamics of the network. Rigorous mathematical analysis is carried out for the stability of the closed loop system and the technique is experimentally validated on position of a DC micro-grid using a specially designed test rig. For benchmarking purposes, a conventional Proportional Integral (PI) controller is also implemented. An improvement of 2.5% in rise time, 6.7% in settling time and reduction of voltage dip by 31.7% during load transaction is achieved as compared to the PI controller. The experiment confirms the hypothesis that fixed frequency SMC shows better performance than its counterpart in the phase of introduced disturbances.

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“…The concept of using multifunctional inverters has been suggested by some researchers. In this concept, not only the generated power of distributed generator (DG) can be injected to the grid or MG via proper control of inverter but also compensation of nonlinear and unbalanced loads effects can be achieved . In previous studies, the DG units are not modeled and a constant DC source is used as DG units.…”

Section: Introductionmentioning

confidence: 99%

Power quality enhancement and power management of a multifunctional interfacing inverter for PV and battery energy storage system

Mousavi

Jalilian

Savaghebi

et al. 2018

Int Trans Electr Energ Syst

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Summary In this paper, the control of an interface inverter for application of a hybrid photovoltaic and battery energy storage system (BESS) is proposed. The control system of the inverter consists of 2 parts including power quality enhancement and active power control. A control approach for battery state of charge and power management is proposed for improving the performance of BESS and load leveling purpose. Furthermore, to prevent the BESS from frequently charge and discharge during a day, the discharge of it can be controlled by operator or microgrid central controller. The power quality enhancement function of the proposed method mitigates the effect of the unbalance and nonlinear loads within the microgrid on the 3‐phase 4‐wire grid. The simulation results show that by using the multifunctional inverters, the unbalance and harmonics of the loads are compensated; furthermore, the neutral current, which is drawn from the grid, is competently compensated. The simulation results show that by using the proposed power management system, the load leveling and charge and discharge management of battery energy storage considering the battery limitation for the sake of extending the battery service life are achieved.

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Coordinated control of multifunctional inverters for voltage support and harmonic compensation in a grid-connected microgrid

Abstract: In this paper, a coordinated harmonic compensation and voltage support scheme is presented for distributed generations' (DGs') interface inverters in a resistive

Cited by 49 publications

References 31 publications

Secondary‐control‐based harmonics compensation scheme for voltage‐ and current‐controlled inverters in islanded microgrids

Secondary‐control‐based harmonics compensation scheme for voltage‐ and current‐controlled inverters in islanded microgrids

Fixed Frequency Sliding Mode Control of Power Converters for Improved Dynamic Response in DC Micro-Grids

Power quality enhancement and power management of a multifunctional interfacing inverter for PV and battery energy storage system

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