An Enhancement of Power Quality With Efficient Active Power Transfer Capability in a PV–BSS-Fed UAPF for Microgrid Realization

Golla, Mallikarjuna; Subbaiyan, Thangavel; Simon, Sishaj P.; Padhy, Narayana Prasad

doi:10.1109/jsyst.2022.3179182

Cited by 18 publications

(3 citation statements)

References 31 publications

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“…The shunt APF is the most effective in addressing current-related issues, while the series APF is the most appropriate for mitigating voltage-related problems. As the current distribution system necessitates a higher-quality voltage supply and current draw, the installation of APFs has immense potential for actual practical implementation [7,10]. A reduction in RMS voltage or current for periods ranging from 0.5 cycles to 1 minute is known as a sag.…”

Section: Need Of Power Quality In Upqcmentioning

confidence: 99%

ANFIS Controlled MMC-UPQC to Mitigate Power Quality Problems in Solar PV Integrated Power System

Rajesh Garikapati,

S. Ramesh Kumar,

N. Karthik

2023

ARASET

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This paper focuses on the implementation of a Modular Multilevel Converter (MMC) based Unified Power Quality Conditioner (UPQC) in a grid-integrated Photovoltaic (PV) system. The integration of photovoltaic (PV) systems into the grid brings numerous benefits in terms of renewable energy utilization like sustainable energy generation, energy security, grid resilience, and economic growth. However, the voltage source converters (VSCs) employed in PV systems can introduce power quality (PQ) issues, including voltage fluctuations, harmonics, and reactive power imbalances and grid instability. The objective of this work is to enhance power quality by mitigating voltage and current fluctuations and harmonics generated due to VSC, compensating reactive power requirements by the load and PV system, and regulating the DC link voltage. For DC voltage regulation, an Adaptive Neuro-Fuzzy Inference System (ANFIS) controller is employed to control for MMC-UPQC. The proposed control strategy is simulated using MATLAB/SIMULINK software and the results are compared with conventional Proportional Integral (PI) and fuzzy controllers. Various dynamic conditions such as voltage sag and swell at the point of common coupling (PCC), changes in irradiance for the PV system, and load variations are considered. The simulation results demonstrate that the ANFIS-controlled MMC-based UPQC outperforms the PI and fuzzy controllers in terms of power quality improvement. It effectively suppresses harmonics, maintains a stable DC link voltage, and compensates for reactive power fluctuations. The proposed control strategy provides superior performance and achieves better power quality compared to conventional controllers. The findings of this work highlight the potential of using an ANFIS controller in MMC-based UPQC systems for grid-integrated PV systems.

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Section: Need Of Power Quality In Upqcmentioning

confidence: 99%

ANFIS Controlled MMC-UPQC to Mitigate Power Quality Problems in Solar PV Integrated Power System

Rajesh Garikapati,

S. Ramesh Kumar,

N. Karthik

2023

ARASET

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“…The literature provided thus far has predominantly focused on supplying load harmonics using SAF, with limited attention given to the simultaneous injection of active power alongside harmonics supply [19]. As energy demands continue to rise, the need for solar interface active filters in nonlinear load infrastructures is growing [24]. These filters are expected to support active power injection into the grid while managing load-demanded harmonics.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Load Network Time Constant Computation Based Solar Active Power Filters Cum Injector for Industrial Loads/Grids

Reddy,

Gupta,

Sekhar

2024

IEEE Access

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This work proposes an efficient integration method of solar energy with industrial nonlinear loads, accounting for dynamic variations in solar power and load harmonic profiles. The involved dynamics necessitate that the solar interface front-end inverters be equipped to handle both harmonic distortions and active power injection characteristics simultaneously. In this work, an instantaneous load and source characteristic mapping is proposed for the solar-interfaced front-end inverter operated as a shunt active power filter cum active power injector in order to accommodate the dynamic variations of the source and load. As per requirement, to separate the load-demanded and switching harmonics, a new load network time constant-based passive filter design diverging from traditional passive filter design methods is demonstrated. Further, a comprehensive explanation of the current controller modeling methodology is elaborated, considering the essential bandwidth required for proficiently managing load-demanded harmonics in both grid injection and drawing modes of operation. Later, in grid injection mode, the influence of grid and system impedance interactions on the power quality is analyzed for weak grid scenarios to derive the requisite bandwidth conditions to ensure resilient power transfer. Subsequently, the experimental validation of the solar interfaced shunt active power filter (SISAPF) with active power injection capability is carried out in both grid power drawing and injection modes, demonstrating the effectiveness of the enhanced bandwidth in handling load-demanded harmonics and solar power dynamic variations.INDEX TERMS EV charging infrastructure, Load time constant, Non-linear loads, passive filter design, Shunt active filter, Solar Inverter, System bandwidth, Three-phase inverter.

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“…A PV-based D-STATCOM utilizes the SRF theory to improve power quality in (Golla et al, 2023). It enables better control of RPC, reduces voltage fluctuations, and optimizes solar power utilization.…”

Section: Introductionmentioning

confidence: 99%

Ramp-rate control for power quality improvement of renewable grid-integrated microgrid with hybrid energy storage system

Brahmendra Kumar,

Palanisamy,

De Tuglie

2024

Front. Energy Res.

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This paper demonstrates an enhancement of power quality for a photovoltaic (PV) system connected to the grid with a hybrid energy storage system (HESS). The proposed system utilizes a ramp-rate control (RRC) strategy to limit severe fluctuations in the PV power output. Battery storage is integrated to store surplus energy generated by the PV system and is used for continuous power application. A high-power density device, known as a supercapacitor (SC), is employed to mitigate transient fluctuations in the battery. The proposed system facilitates smooth PV power generation, stabilizes the DC bus voltage (VDC), and eliminates source current harmonics induced by non-linear loads. The Shunt Active Power Filter (SAPF) discussed in this paper serves two primary purposes. Firstly, it acts as a reactive power buffer, smoothing out fluctuations and reducing current harmonic distortions. Secondly, it enables active power injection into the grid, utilizing a specific renewable solar PV source. The efficiency of the modeled compensation system is demonstrated by the sinusoidal shape of the current and the compensation of reactive power (RPC). The targeted system showcases the effectiveness of the current setup by exhibiting low total harmonic distortion (THD). The multifunctional features of the proposed system were implemented using the MATLAB/Simulink software, and the results were validated using an OP5700 Hardware-in-the-Loop (HIL) test bench. This integration of distributed power generation capabilities not only enhances the overall power quality but also improves the efficient utilization of renewable energy resources (RESs).

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An Enhancement of Power Quality With Efficient Active Power Transfer Capability in a PV–BSS-Fed UAPF for Microgrid Realization

Cited by 18 publications

References 31 publications

ANFIS Controlled MMC-UPQC to Mitigate Power Quality Problems in Solar PV Integrated Power System

ANFIS Controlled MMC-UPQC to Mitigate Power Quality Problems in Solar PV Integrated Power System

Design and Implementation of Load Network Time Constant Computation Based Solar Active Power Filters Cum Injector for Industrial Loads/Grids

Ramp-rate control for power quality improvement of renewable grid-integrated microgrid with hybrid energy storage system

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