Self-Adjustable Step-Based Control Algorithm for Grid-Interactive Multifunctional Single-Phase PV-Battery System Under Abnormal Grid Conditions

Kumar, Shailendra; Patel, Laxmi Narayan; Singh, Bhim; Vyas, Anoop Lal

doi:10.1109/tia.2020.2981437

Cited by 38 publications

(20 citation statements)

References 20 publications

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“…To suppress upward and downward fluctuations of the SPGS, the rapid power regulation technology is required to temporarily store and release power to stabilize the power output from the SPGS. Since battery set has the advantages of small size, quick absorption and release of electrical energy and flexible operation, it has considerable potential as a power regulation device for the SPGS [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In general, the control concept for smoothing the output power of SPGS is that the battery energy storage system supplies the difference between the average value and the instantaneous value for the output power of SPGS.…”

Section: Introductionmentioning

confidence: 99%

“…The output from a solar cell array is DC power and the battery set stores power in DC form, so a power conversion interface is needed for integrating solar cell array or battery set into the power grid for DC-AC power conversion . The configuration of SPGS and battery energy storage system can be divided into AC coupling [9][10][11][12] and DC coupling [4], [8], [13][14][15][16]. For the AC coupling configuration, the SPGS and the battery energy storage system (BESS) are respectively connected to the grid.…”

Section: Introductionmentioning

confidence: 99%

“…Small capacity SPGSs or BESS use fewer solar modules or batteries so the DC voltage is lower. A DC-AC power converter with a traditional bridge architecture or multilevel architecture is derived from a buck power converter so the DC bus voltage for the DC-AC power converter must be greater than the peak value of grid voltage [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. A boost power converter (BPC) must be inserted between the DC-AC power converter and the solar cell array or battery set and all power from the solar cell array or battery set must be processed using two power conversion stages.…”

Section: Introductionmentioning

confidence: 99%

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Solar Power Generation System With Power Smoothing Function

Jou

et al. 2022

IEEE Access

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The output power from a solar power generation system (SPGS) changes significantly because of environmental factors, which affects the stability and reliability of a power distribution system. This study proposes a SPGS with the power smoothing function. The proposed SPGS consists of a solar cell array, a battery set, a dual-input buck-boost DC-AC inverter (DIBBDAI) and a boost power converter (BPC). The DIBBDAI combines the functions of voltage boost, voltage buck and DC-AC power conversion. The BPC acts as a battery charger between the solar cell array and the battery set. For the proposed SPGS, the DC power that is provided by the solar cell array or the battery set is converted into AC power through only one power stage. The solar cell array also charges the battery set through only one power stage. This increases the power conversion efficiency for the solar cell array, the battery set and the utility. The battery set is charged/discharged when the output power of the solar cell array changes drastically, in order to smooth the output power from the SPGS. In addition, the DIBBDAI can suppress the leakage current that is induced by the parasitic capacitance of the solar cell array. The proposed power conversion interface increases power efficiency, smooths power fluctuation and decreases leakage current for a SPGS. A hardware prototype is completed to verify the performance of the proposed SPGS.INDEX TERMS solar power generation, power smoothing, buck-boost DC-AC inverter

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solar Power Generation System With Power Smoothing Function

Jou

et al. 2022

IEEE Access

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show abstract

“…Both sources interactively supply the load demand without the need for an energy storage element to stabilize the solar profile, and at the same time minimize the interaction with the grid, thereby minimizing grid power consumption and preventing grid disturbances from propagating to the load side. A common design approach for PV-supported DC microgrids is to have a bidirectional power converter interfacing with the grid, which allows reverse power flow in case the PV generation exceeds the load demand, thereby fully utilizing the PV potential [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design Methodology of a Novel Integration Topology of Storageless Off-Grid PV Systems

et al. 2022

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In this manuscript, a novel topology is proposed to integrate on-grid and off-grid PV systems supplying the same load premises. The load side is investigated and analyzed, and critical and non-critical loads are separated in terms of power supply. Critical and seasonal loads usually place stress on the grid’s point of common coupling (PCC). In the proposed topology, they are supplied by a novel topology for an off-grid solar pump PV system that lacks energy storage integration. The lack of energy storage batteries requires a novel design and sizing scheme for the off-grid PV system, and a methodology is proposed in this manuscript. The on-grid PV system is conventionally designed and coupled with the storage-less off-grid PV system to maintain load supply. The proposed methodology minimizes the ratings of the PCC and hence relieves stress on congested grids with renewable energy penetration, especially in condensed urban areas. The proposed structure enables the operation of microgrids with high penetration levels of renewable energy resources and minimizes dependance on storage batteries for off-grid systems. A case study is presented and thoroughly analyzed with the proposed methodology. The outcomes of the design process are evaluated economically and were found to be feasible, as is detailed and supported with simulation results.

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“…Reference [21] extends the PV-battery system for electric vehicle charging and improves the reactive power control. The PV-battery hybrid system behavior is further investigated under abnormal grid conditions in [22], which focuses on fast grid synchronization and seamless transition be- tween grid-connected and islanded modes.…”

Section: Introductionmentioning

confidence: 99%

A Grid-tied PV Inverter with Sag-severity- independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection

Talha

Raihan

Rahim

2021

Journal of Modern Power Systems and Clean Energy

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This paper proposes a grid-tied photovoltaic (PV) inverter capable of low-voltage ride through (LVRT), reactive power support, and islanding protection. Unlike other LVRT inverters, the proposed inverter is independent of sag severity while maintaining the maximum power-point tracking (MPPT) under normal and faulty conditions. The addition of an energy storage buffer stage mitigates the DC-link voltage surge during sags. At the same time, the inverter injects the reactive power during back-to-back sags of variable depths. The control system of the inverter generates the appropriate reference signals for normal, LVRT, and anti-islanding modes while the MPPT continues running. The salient features of the proposed inverter are: ① active power injection under normal grid conditions; ② sag-depth independent LVRT with reactive power support; ③ no DC-link fluctuations; ④ continuous MPPT mode; and ⑤ simultaneous LVRT and anti-islanding support during a grid outage. The inverter demonstrates an uninterrupted operation and seamless transition between various operating modes. Simulations and the experimental prototype have been implemented to validate the efficacy of the proposed PV inverter.

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Self-Adjustable Step-Based Control Algorithm for Grid-Interactive Multifunctional Single-Phase PV-Battery System Under Abnormal Grid Conditions

Cited by 38 publications

References 20 publications

Solar Power Generation System With Power Smoothing Function

Solar Power Generation System With Power Smoothing Function

Analysis and Design Methodology of a Novel Integration Topology of Storageless Off-Grid PV Systems

A Grid-tied PV Inverter with Sag-severity- independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection

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