Frequency conversion control of photovoltaic grid-connected inverter based on LCL filtering

Xiao, Dongyue

doi:10.1093/ijlct/ctab054

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…The net current of the cell is determined by the difference between the I L and the I 0 , as given in Equation (1). The PV cell’s modeling and I-V properties are described in the equations below [ 50 ].

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Section: Description and Modeling Of The Investigated Systemmentioning

confidence: 99%

Enhancing the Functionality of a Grid-Connected Photovoltaic System in a Distant Egyptian Region Using an Optimized Dynamic Voltage Restorer: Application of Artificial Rabbits Optimization

Ibrahim

Alkuhayli

Béroual

et al. 2023

Sensors

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Photovoltaic (PV) systems are crucial to the production of electricity for a newly established community in Egypt, especially in grid-tied systems. Power quality (PQ) issues appear as a result of PV connection with the power grid (PG). PQ problems cause the PG to experience faults and harmonics, which affect consumers. A series compensator dynamic voltage restorer (DVR) is the most affordable option for resolving the abovementioned PQ problems. To address PQ difficulties, this paper describes a grid-tied PV combined with a DVR that uses a rotating dq reference frame (dqRF) controller. The main goal of this study is to apply and construct an effective PI controller for a DVR to mitigate PQ problems. The artificial rabbits optimization (ARO) is used to obtain the best tune of the PI controller. The obtained results are compared with five optimization techniques (L-SHADE, CMAES, WOA, PSO, and GWO) to show its impact and effectiveness. Additionally, Lyapunov’s function is used to analyze and evaluate the proposed controller stability. Also, a mathematical analysis of the investigated PV, boost converter, and rotating dqRF control is performed. Two fault test scenarios are examined to confirm the efficacy of the suggested control approach. The parameters’ (voltage, current, and power) waveforms for the suggested system are improved, and the system is kept running continuously under fault periods, which improves the performance of the system. Moreover, the findings demonstrate that the presented design successfully keeps the voltage at the required level with low THD% values at the load side according to the IEEE standards and displays a clear enhancement in voltage waveforms. The MATLAB/SIMULINK software is used to confirm the proposed system’s performance.

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…”

Section: Description and Modeling Of The Investigated Systemmentioning

confidence: 99%

Enhancing the Functionality of a Grid-Connected Photovoltaic System in a Distant Egyptian Region Using an Optimized Dynamic Voltage Restorer: Application of Artificial Rabbits Optimization

Ibrahim

Alkuhayli

Béroual

et al. 2023

Sensors

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“…It was ensured that the switching tube pulses on the same bridge arm were complementary when switches Q 1 and Q 4 were turned on and Q 2 and Q 3 were off. 25…”

Section: Characteristics and Analysis Of Convertermentioning

confidence: 99%

“…It was ensured that the switching tube pulses on the same bridge arm were complementary when switches Q 1 and Q 4 were turned on and Q 2 and Q 3 were off. 25 The equivalent circuit of the full-bridge LLC resonant converter is shown in Figure 2. 26 The LLC resonant power converter has two resonant frequencies according to equations (1) and (2).…”

Section: Characteristics and Analysis Of Convertermentioning

confidence: 99%

Simulation optimal and design of 3-kW DC-DC converter for pure electric vehicles

Sun,

Zhou,

Chiu

et al. 2023

Advances in Mechanical Engineering

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There are significant differences between pure electric vehicles and traditional fuel vehicles. High-power converters are required to meet the increased energy consumption requirements of loads within pure electric vehicles. A high-power integrated DC-DC converter is designed to meet the requirements of pure electric vehicles. First, the characteristics of LLC resonant converters are analyzed, and a fuzzy adaptive PID frequency conversion phase-shift soft switching control strategy is proposed. Second, the fuzzy controller is designed based on the MATLAB toolbox based on the characteristics of electric vehicle converters. Then, in order to further improve the efficiency of the converter, a planar transformer is proposed and optimized. It is found that with the increase in the switching frequency, the loss is smaller, which is more conducive to improving the efficiency. Simulation results show that zero-voltage switching and zero-current switching can be realized by using the proposed control strategy, and experimental results show that the proposed strategy is significantly more efficient under non-heavy-load conditions. The minimum and maximum efficiency values are 92% and 97.38%, respectively. The high-power converter ensures the normal operation of the load of pure electric vehicles. This work provides a method for developing high-power DC-DC converters and improving efficiency.

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Frequency conversion control of photovoltaic grid-connected inverter based on LCL filtering

Cited by 2 publications

References 7 publications

Enhancing the Functionality of a Grid-Connected Photovoltaic System in a Distant Egyptian Region Using an Optimized Dynamic Voltage Restorer: Application of Artificial Rabbits Optimization

Enhancing the Functionality of a Grid-Connected Photovoltaic System in a Distant Egyptian Region Using an Optimized Dynamic Voltage Restorer: Application of Artificial Rabbits Optimization

Simulation optimal and design of 3-kW DC-DC converter for pure electric vehicles

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