Keywords
single-phase bridge grid inverter
PWM
current control loop
current error compensation
THD
modeling комбінована система електроживлення
однофазний мостовий мережевий інвертор
ШІМ
кон- тур регулювання струму
компенсація похибки струму
коефіцієнт гармонік
моделювання
How to Cite
Abstract
Based on the analysis of the principle of current formation of a single-phase a grid bridge inverter for combined power system with combining the function of the active filter, there are opportunities to improve the structure of the output current control loop with PWM by reducing of the error in forming the output current to improve the harmonic composition
of the grid current in the presence of non-linear load. The dependences for the amplitude of current pulsations and error for the main current harmonic are obtained in accordance with the inverter input voltage, modulation frequency and reactor inductance. It was found that for the harmonically law of variation of the derivative of the reference
of current, the error in the formation of current is constant and is determined by the first harmonic of the grid voltage. The static compensation of the error according to the main harmonic of the current and the dynamic compensation of the current waveform distortion for nonlinear load are substantiated. The structure of the control system has been improved
with the introduction of compensating circuits. The results of modeling the system “a grid - inverter - load” are given. References 11, figures 6.
References
Zheng Zeng, Huan Yang, Rongxiang Zhao, Chong Cheng. Topologies and control strategies of multifunctional grid-connected inverters for power quality enhancement: A comprehensive review. Renewable and Sustainable Energy Reviews 24 (2013). Рр. 223–270. DOI: https://doi.org/10.1016/j.rser.2013.03.033.
Joaquín Vaquero, Nimrod Vázquez, Ivan Soriano, Jeziel Vázquez. Grid-Connected Photovoltaic System with Active Power Filtering Functionality. Hindawi Publishing Corporation International Journal of Photoenergy. Vol. 2018. Article ID 2140797. 9 p. DOI: https://doi.org/10.1155/2018/2140797
S.A.O. da Silva, L.P. Sampaio, and L.B.G. Campanhol. Single-phase grid-tied photovoltaic system with boost converter and active filtering. 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE). Istanbul, Turkey, June 2014. Pp. 2502–2507. DOI: https://doi.org/10.1109/ISIE.2014.6865013
Denizar C. Martins, Kleber C.A. de Souza. A Single-Phase Grid-Connected PV System With Active Power Filter. International journal of circuits, systems and signal processing. 2008. Issue 1. Vol. 2. Рр. 50-55.
Vigneysh T., Kumarappan N. Grid interconnection of renewable energy sources using multifunctional gridinteractive converters: A fuzzy logic based approach. Electric Power Systems Research 151. 2017. Рр. 359–368. DOI: https://doi.org/10.1016/j.epsr.2017.06.010 .
Huifeng Mao, Xu Yang, Zenglu Chen, Zhaoan Wang. A Hysteresis Current Controller for Single-Phase Three-Level Voltage Source Inverters. IEEE transactions on power electronics. 2012. Vol. 27. No 7. Рр. 3330-3339. DOI: https://doi.org/10.1109/TPEL.2011.2181419 .
Shavelkin A., Shvedchykova I. Multifunctional converter for single-phase combined power supply systems for local objects with a photovoltaic solar battery. Tekhnichna Elektrodynamika. 2018. No 5. Pp. 92–95. DOI: https://doi.org/ 10.15407/techned2018.05.092 .
Shavelkin A.A. Structures of single-phase converter units for combined power supply systems with photovoltaic solar batteries. Tekhnichna Elektrodynamika. 2018. No 2. Рр. 39–46 (Rus). DOI: https://doi.org/10.15407/techned2018.02.039.
IEEE Std 519-1992 Recommended Practice and Requirements for Harmonic Control in Electrical Power Systems. URL: http://www.ieee.org (accessed 15.11.2018)
1547-2018. IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces. Date of Publication: 6 April 2018. DOI: https://doi.org/10.1109/IEEESTD.2018.8332112.
Brochure. ABB solar inverters. URL: www.abb.com/solarinverters (accessed 15.11.2018).
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2022 Tekhnichna Elektrodynamika