Modeling and Analysis of Grid-Connected Inverter for PV Generation

Cao, Neng; Cao, Ya Jun; Liu, Jiao Yu

doi:10.4028/www.scientific.net/amr.760-762.451

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…And so, the inverter output voltage and frequency fluctuation must be controlled by synchronizing these two main parameters [12]. Voltage and current control techniques are used for this purpose [18]. Voltage control is used to maintain a constant output voltage with the utility grid voltage, because the grid voltage determines the overall operating voltage of a grid power distribution system.…”

Section: Literature Reviewmentioning

confidence: 99%

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Performance evaluation of 2.4kVA grid-tie inverter

Iyere¹,

Anyasi

Idim³

et al. 2020

J Electri Contr Telecom Res

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This paper is focused on experimenting the overall performance of a 2.4kVA direct solar power supply system. The overall aim is to implement a solar power supply system without a battery back-up in order to minimize cost. The objectives include measuring the performance of grid-tie inverter, determine its period of operation under load conditions, to make the use of batteries optional in solar power supply system and minimize initial cost of installation. Various tests (variable load, fixed load and no-load) were carried out for the purpose of analysis. A dual trace digital storage oscilloscope was used to monitor the output waveform of the inverter to observe possible harmonic distortion on the waveform. The inverter takes its input power directly from the solar modules (panels) through the maximum power point tracker (MPPT) charge controller. Each category of test was conducted for at least three days of different weather conditions, to determine how variation in the sun’s intensity (irradiance) affects the operation of the inverter and its output power. Test results show that the inverter performs its function during the day apart from the early hours in the morning and later in the evening of each day, and the loads were powered successfully during the period of test. The output waveform as observed from the oscilloscope is not purely sinusoidal; it is rather a modified sine wave.

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Section: Literature Reviewmentioning

confidence: 99%

“…Current control also helps to regulate the PV system with the use of MPPT. Basically, a grid-connected system comprises solar panels, MPPT input inverter and the control system [18], [19].…”

Section: Literature Reviewmentioning

confidence: 99%

Performance evaluation of 2.4kVA grid-tie inverter

Iyere¹,

Anyasi

Idim³

et al. 2020

J Electri Contr Telecom Res

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show abstract

“…The SCCA can effectively improve the quality of the power. In references [24][25][26][27][28], by injecting a certain percentage of the negative-sequence current component into the grid-connected current, the double-frequency fluctuations of the DC bus are reduced. However, injecting negative sequence current components will consume a huge amount of funds.…”

Section: Introductionmentioning

confidence: 99%

Research on the Control Method of the PV Grid-Connected Inverter under an Asymmetrical Power Grid Fault

Tian,

Lu,

Wang

et al. 2023

Energies

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The negative-sequence current component and harmonic components generated when an asymmetrical fault occurs in the power grid seriously affect the normal operation of the photovoltaic (PV) grid-connected inverter. In order to suppress the negative-sequence current component and the harmonic component of the grid-connected current, and to meet the normal grid-connected operation requirements of the PV grid-connected inverter when asymmetrical faults occur in the grid, this paper proposes the proportional integral double-resonant (PI-DR) current controller, which consists of the PI controller and double-resonant controllers. The PI-DR current controller can directly control the negative-sequence current component and the grid-connected current harmonic component in the output current in the forward synchronous rotating coordinate system, without decomposing the positive and negative sequence currents. The PI-DR current controller ensures that the PV grid-connected inverter can realize normal grid-connected operation and improves the quality of the power when an asymmetrical fault occurs in the power grid. MATLAB/Simulink experiments show that the PI-DR current controller can improve the dynamic characteristics of the PV grid-connected inverter and improve the operating capability of the system when an asymmetrical fault occurs in the power grid.

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Frequency regulation in solar PV-powered thermal power system using FPA-PID controller through UPFC and RFB

Masikana,

Sharma,

Sharma

et al. 2024

Electr Eng

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The integration of additional renewable energy sources, such as solar PV, into the current power grid is a global priority due to the depletion of traditional supplies and rising power demand. In order to achieve load frequency control (LFC) of the power system with integration of solar PV, this study employs the construction of a proportional integral derivative (PID) scheme that has been fine-tuned via the flower pollination algorithm (FPA). When evaluating the performance of FPA-PID on an interconnected thermal power system, three distinct error values—integral time absolute error (ITAE), integral time multiplied by square error (ITSE), and integral of absolute error (IAE)—are taken into consideration. The results are compared with those of genetic algorithm, particle swarm optimization, and hybrid bacteria foraging optimization based PID. It can be observed that the error values achieved with FPA-PID are substantially lower than those obtained with other PID designs, which are ITSE of 2.07e−05, ITAE of 0.01839, and IAE of 0.008889. Furthermore, the PV integration has further decreased the ITSE to 7.872e−06, the ITAE to 0.008953, and the IAE to 0.005376. All error levels have been further reduced because of the integration of unified power flow control (UPFC) in series with the tie-line and redox flow battery (RFB) separately, utilizing the FPA-PID scheme with solar PV. Finally, it is seen that FPA-PID with solar PV and with UPFC outperforms other LFC designs. The graphical LFC plots verify that FPA-PID with solar PV and with UPFC has capability to reduce the frequency, tie-line power, and area control error excursions in comparison to other LFC designs.

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Modeling and Analysis of Grid-Connected Inverter for PV Generation

Cited by 7 publications

References 3 publications

Performance evaluation of 2.4kVA grid-tie inverter

Performance evaluation of 2.4kVA grid-tie inverter

Research on the Control Method of the PV Grid-Connected Inverter under an Asymmetrical Power Grid Fault

Frequency regulation in solar PV-powered thermal power system using FPA-PID controller through UPFC and RFB

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