1
Department of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran
2
Department of Electrical Engineering, Isfahan University, Isfahan, Iran
10.24200/sci.2024.64445.8946
Abstract
As the number of distributed generation (DG) systems connected to the utility grid is increasing the issue of synchronization between the DGs and the grid is becoming more profound. This paper presents a simple phase-locked loop (PLL) for the proper operation of the inverters even when the utility grid voltage is subjected to considerable abnormal conditions, such as changes in frequency and voltage amplitude or the presence of grid voltage harmonics. The proposed PLL is based on zero crossing points, which makes it robust and compatible in various grid voltage frequencies and amplitudes. Since in the proposed PLL the grid voltage phase and amplitude are extracted without Park matrix and notch filter, it demands lower number of clocks for the calculations with respect to the existing methods. This feature is practically desired since the proposed PLL can be executed on a simple and low-cost microcontroller. The performance of the proposed PLL has been evaluated by simulation and experimental tests. The results demonstrate the functionality of the proposed PLL on a 1.6 kW single-phase inverter.
Khodaparast Klidbari, M. , Yazdian, H. , Mohsenzadeh, S. and Moazami, A. (2024). A Simple and Practical PLL for Single-Phase Grid-Tied Inverters Facing with Abnormal Grid Voltage Conditions. Scientia Iranica, (), -. doi: 10.24200/sci.2024.64445.8946
MLA
Khodaparast Klidbari, M. , , Yazdian, H. , , Mohsenzadeh, S. , and Moazami, A. . "A Simple and Practical PLL for Single-Phase Grid-Tied Inverters Facing with Abnormal Grid Voltage Conditions", Scientia Iranica, , , 2024, -. doi: 10.24200/sci.2024.64445.8946
HARVARD
Khodaparast Klidbari, M., Yazdian, H., Mohsenzadeh, S., Moazami, A. (2024). 'A Simple and Practical PLL for Single-Phase Grid-Tied Inverters Facing with Abnormal Grid Voltage Conditions', Scientia Iranica, (), pp. -. doi: 10.24200/sci.2024.64445.8946
CHICAGO
M. Khodaparast Klidbari , H. Yazdian , S. Mohsenzadeh and A. Moazami, "A Simple and Practical PLL for Single-Phase Grid-Tied Inverters Facing with Abnormal Grid Voltage Conditions," Scientia Iranica, (2024): -, doi: 10.24200/sci.2024.64445.8946
VANCOUVER
Khodaparast Klidbari, M., Yazdian, H., Mohsenzadeh, S., Moazami, A. A Simple and Practical PLL for Single-Phase Grid-Tied Inverters Facing with Abnormal Grid Voltage Conditions. Scientia Iranica, 2024; (): -. doi: 10.24200/sci.2024.64445.8946
)