Flexible Active Power Control for PV-ESS Systems: A Review

Wu, Xiangqiang; Kerekes, Tamás

doi:10.3390/en14217388

Cited by 6 publications

(2 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous publications address voltage regulation through active and reactive power with the use of PV or energy storage inverters. Most of them focus on the control strategy, especially if both devices are used [21,[23][24][25][26], control algorithms [20,27,28] and the effects of control in dependence on the network impedance [29]. It is shown that these methods and strategies presented are effective in limiting voltage rises and unbalances.…”

Section: Introductionmentioning

confidence: 99%

Modular PV System for Applications in Prosumer Installations with Uncontrolled, Unbalanced and Non-Linear Loads

Kelm,

Mieński,

Wasiak

2024

Energies

View full text Add to dashboard Cite

This article proposes a modular system for prosumer installations composed of photovoltaic (PV) panels and energy storage (ES) integrated with the low voltage (LV) network through a common 4-wire AC/DC inverter. The novel idea is a control strategy for the inverter in which additional functionalities are incorporated. Apart from transmitting an active power generated by the PV source, the same inverter is used to manage energy generated by the PV and to compensate for the current unbalance, harmonics (including subharmonics and interharmonics) and reactive power of the prosumer loads. As a result of the algorithm operation, the currents flowing to the prosumer installation are sinusoidal, symmetrical and purely active, which results in voltage balancing and improving voltage waveforms at the point of common coupling (PCC). In this way, with the widespread use of this solution among prosumers, the impact of the prosumer installation on the distribution network is minimized, and power quality (PQ) disturbances such as unacceptable voltage rises, voltage unbalance and harmonics are avoided. The presented approach may be a solution to the problems network operators face nowadays due to the uncontrolled connection of PV sources. The proposed modular system is also beneficial for the prosumer as the instances of unacceptable overvoltage and, consequently, shutdowns of prosumer installations are reduced. The features of the proposed method are shown in relation to other means applied for PQ improvement in the networks with distributed generation. A principle of the control and the involving algorithm for the inverter is presented. The efficiency of the control strategy was tested in a simulation developed in the PSCAD/EMTDC program. The results of simulations are presented, and the proposed solution is concluded.

show abstract

Section: Introductionmentioning

confidence: 99%

Modular PV System for Applications in Prosumer Installations with Uncontrolled, Unbalanced and Non-Linear Loads

Kelm,

Mieński,

Wasiak

2024

Energies

View full text Add to dashboard Cite

show abstract

“…PV generators are very well suited to distributed generation in low-voltage grids [4][5][6][7][8]. However, most of the time these kinds of grids require some support in order to meet certain requirements, reduce losses and increase capacity.…”

Section: Introductionmentioning

confidence: 99%

Compensation of Unbalanced Low-Voltage Grids Using a Photovoltaic Generation System with a Dual Four-Leg, Two-Level Inverter

et al. 2022

View full text Add to dashboard Cite

In this paper, a grid-connected photovoltaic (PV) generation system is proposed with the purpose of providing support to low-voltage grids, namely through the elimination or attenuation of the grid imbalances. This compensation must consider the load types, which can be either linear or non-linear, and whether the reactive power and current harmonics generated by the non-linear loads need to be compensated in addition to the unbalanced active power. This must be well considered, since the compensation of all aspects requires oversized PV inverters. Thus, the different unbalanced compensation schemes are addressed. Several schemes for the generation of the inverter current references taking into consideration the compensation and load type are presented. For this PV generation system, a dual four-leg, two-level inverter is proposed. It provides full unbalanced compensation owing to the fourth leg of the inverter and also extends the AC voltage, which is important when this compensation is required. To control this inverter, a control scheme for the inverter that considers several compensation factors is proposed. A vector voltage modulator associated with the controller is another aspect that is addressed in the paper. This modulator considers the balance between the DC voltages of the inverters. Several compensation schemes are verified through computational tests. The results validate the effectiveness of the proposed PV generation system.

show abstract

Artificial intelligence–enabled Internet of Things technologies in modern energy grids

Behnam

Azad

Daneshvar

et al. 2023

IoT Enabled Multi-Energy Systems

View full text Add to dashboard Cite

Flexible Active Power Control for PV-ESS Systems: A Review

Cited by 6 publications

References 71 publications

Modular PV System for Applications in Prosumer Installations with Uncontrolled, Unbalanced and Non-Linear Loads

Modular PV System for Applications in Prosumer Installations with Uncontrolled, Unbalanced and Non-Linear Loads

Compensation of Unbalanced Low-Voltage Grids Using a Photovoltaic Generation System with a Dual Four-Leg, Two-Level Inverter

Artificial intelligence–enabled Internet of Things technologies in modern energy grids

Contact Info

Product

Resources

About