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Sarvghadi, P., Monfared, M.. (1401). Stable Operation and Current Sharing Control among Parallel Single-Phase ‎Inverter Modules with Unequal Filter Impedances. سامانه مدیریت نشریات علمی, 10(2), 134-142. doi: 10.22098/joape.2022.9668.1673
P. Sarvghadi; M. Monfared. "Stable Operation and Current Sharing Control among Parallel Single-Phase ‎Inverter Modules with Unequal Filter Impedances". سامانه مدیریت نشریات علمی, 10, 2, 1401, 134-142. doi: 10.22098/joape.2022.9668.1673
Sarvghadi, P., Monfared, M.. (1401). 'Stable Operation and Current Sharing Control among Parallel Single-Phase ‎Inverter Modules with Unequal Filter Impedances', سامانه مدیریت نشریات علمی, 10(2), pp. 134-142. doi: 10.22098/joape.2022.9668.1673
Sarvghadi, P., Monfared, M.. Stable Operation and Current Sharing Control among Parallel Single-Phase ‎Inverter Modules with Unequal Filter Impedances. سامانه مدیریت نشریات علمی, 1401; 10(2): 134-142. doi: 10.22098/joape.2022.9668.1673

Stable Operation and Current Sharing Control among Parallel Single-Phase ‎Inverter Modules with Unequal Filter Impedances

Journal of Operation and Automation in Power Engineering
دوره 10، شماره 2، آبان 2022، صفحه 134-142    اصل مقاله (841.78 K)
نوع مقاله: Research paper
شناسه دیجیتال (DOI): 10.22098/joape.2022.9668.1673
نویسندگان
P. Sarvghadi؛ M. Monfared*
Department of Electrical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
چکیده
Parallel connection of two or even more single-phase inverter modules is a successful solution to increase the reliability and the efficiency of an inverter at moderate power levels. Stable operation and proper current sharing among parallel inverter modules is a key issue, especially when they are connected to a common load through unequal output filter impedances. In this paper, a new formulation and consequently a proper current sharing control algorithm for parallel connected inverter modules with the possibility of unequal filter impedances is proposed. Also a dual-loop voltage control with the filter current as the inner loop feedback signal, considering the effect of digital control delay, is adopted. The controller parameters are designed according to a frequency domain analysis. Finally, theoretical achievements are confirmed by experimental test results on a test rig with two 250 W parallel connected single phase inverters.
کلیدواژه‌ها
Parallel inverter modules؛ Circulating current؛ Load sharing
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