Dynamic phasors modeling for a single phase two stage inverter

Coronado-Mendoza, Alberto; Pérez‐Cisneros, Marco; Domínguez-Navarro, José A.; Osuna-Enciso, Valentín; Zúñiga-Grajeda, Virgilio; Gurubel, K. J.

doi:10.1016/j.epsr.2016.04.020

Cited by 11 publications

(13 citation statements)

References 15 publications

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“…Grid connected inverters are usually modeled using relationships coming from energy balances [14,19,21] or from equivalent circuits [10]. In the latter case, electrical quantities are sometimes expressed as phasors [22,23].…”

Section: Modeling Approachmentioning

confidence: 99%

Performance Assessment of Large Photovoltaic (PV) Plants Using an Integrated State-Space Average Modeling Approach

et al. 2020

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Distributed power converters represent a technical solution to improve the performance of large or utility-scale photovoltaic (PV) plants. Unfortunately, evaluation of the yield obtained in large PV fields by using distributed converters is a difficult task because of recurring partial unavailability, inaccuracy of power analyzers, operating constraints imposed by the Power Plant Controller and so on. To overcome such issues in real operating scenarios, a new modeling strategy has been introduced and validated in terms of computational complexity and accuracy. This approach is based on the state-space averaging technique which is applied to large PV plants with multiple conversion stages by performing some elaborations in order to get a final integrated model. The new modeling strategy has been tested in MatLab Simulink environment using data coming from a 300 MW PV plant located in Brazil representing the case study of this work. In this plant, one subfield is equipped with central inverters while another is with string inverters. The proposed model, whose accuracy is in the range from 2.2 to 2.7% with respect to the measured energy, effectively supports data analysis leading to a consistent performance assessment for the distributed conversion system. Final results highlight that string inverters ensure a gain of about 2% in terms of produced energy.

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Section: Modeling Approachmentioning

confidence: 99%

Performance Assessment of Large Photovoltaic (PV) Plants Using an Integrated State-Space Average Modeling Approach

et al. 2020

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“…The author also proposed a model of varying frequency system and claimed that DP concept is used in almost all types of electric power systems. DP modelling of single-phase inverter is used to analyse [27] the performance of single-phase inverter. Literature interprets that DP modelling is useful for analysing complex network with interconnected devices that operate with a nominal frequency but operate with multiple internal frequencies.…”

Section: Modelmentioning

confidence: 99%

Mitigation of harmonics and unbalanced source voltage condition in standalone microgrid: positive sequence component and dynamic phasor based compensator with real-time approach

Rane¹,

Wagh²

2019

Heliyon

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Penetration of Distributed Energy Resources (DER) is in high demand to supply power to the load where the grid is not available. Many of these sources are a single phase source used to form standalone Microgrid (MG). Single phase connectivity of these sources results in an unbalanced source voltage condition (UbSVC). Interfacing power electronic devices also inject the harmonics into Point of Common Coupling (PCC) voltage. The effect of this unbalance and harmonics on the operation of standalone MG is analysed in this paper in a twofold manner. One at a reduced power transfer from DER to load and the other is an error produced in Phase Locked Loop (PLL) operation. Positive Sequence Component (PSC) based and Dynamic Phasor (DP) based compensation techniques are proposed in this paper to mitigate the effect of UbSVC. Simulation validates that both the proposed methods are capable to provide balanced load voltage condition under UbSVC in terms of Voltage Unbalance Factor (VUbF). It also enhances the power transferred from DER to load during an UbSVC. The performance of the proposed compensator during UbSVC and harmonic presence is validated in real-time simulation using Opal-RT and dSPACE simulators.

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“…Modeling of unbalanced systems based on dynamic phasor (DP) concept is an averaging method that is able to convert unbalanced AC components to DC components 23 . Recently, the DP concept has been employed for modeling of power inverters and MGs 6,23 . In Refs.…”

Section: Introductionmentioning

confidence: 99%

“…In Refs. 23–25, the use of DP concept has been able to achieve acceptable results in predicting of the system stability margin and analysis of the dynamic behavior of the MG.…”

Section: Introductionmentioning

confidence: 99%

A robust control strategy for a single‐phase grid‐connected multibus microgrid based on adaptive sliding mode control and dynamic phasor concept

Eshghi

Soltani

Rezaei

et al. 2021

Int Trans Electr Energ Syst

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Summary Due to the increasing development of distribution networks, the need to use clean energy resources, and the existence of different single‐phase and three‐phase consumers, the maximum use of both single‐phase and three‐phase distributed generation (DG) units has become crucial. However, the presence of DG units in microgrids (MGs) requires efficient control strategies, for power control and voltage regulation, to achieve a rapid and proper dynamic response with respect to external disturbances and uncertainties. In this paper, in order to improve the dynamic and steady‐state performance of an unbalanced multibus microgrid including inverter‐based single‐phase DGs, a robust control strategy is proposed for controlling the active and reactive power of DGs. The proposed control scheme is composed of a current controller based on an adaptive sliding mode control method in a virtual synchronous dq reference frame, to control the single‐phase inverter output current, and a PI controller to regulate the voltage magnitude of the generation buses connected to DGs. In the proposed control structure, each single‐phase inverter is controlled as a virtual balanced three‐phase inverter, based on the dynamic phasor concept that makes decoupled control of the active and reactive powers of single‐phase inverters possible. In order to evaluate the validity and effectiveness of the presented control structure, a multibus single‐phase MG containing several inverter‐based single‐phase DG units has been simulated in MATLAB software environment, and the performance of the proposed control scheme has been investigated for various scenarios of parametric uncertainties and external disturbances.

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Dynamic phasors modeling for a single phase two stage inverter

Cited by 11 publications

References 15 publications

Performance Assessment of Large Photovoltaic (PV) Plants Using an Integrated State-Space Average Modeling Approach

Performance Assessment of Large Photovoltaic (PV) Plants Using an Integrated State-Space Average Modeling Approach

Mitigation of harmonics and unbalanced source voltage condition in standalone microgrid: positive sequence component and dynamic phasor based compensator with real-time approach

A robust control strategy for a single‐phase grid‐connected multibus microgrid based on adaptive sliding mode control and dynamic phasor concept

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