Published in: فصلنامه مهندسی برق و الکترونیک ایران، دوره: 15، شماره: 4
COI code: JR_JIAE-15-4_008
Paper Language: English
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Authors New Coupled-Inductor Based Multilevel Inverter with Extension CapabilityShirin Salehahari - Ph.D. Student, Faculty of Electrical and Computer Engineering,University of Tabriz, Tabriz, Iran
Ebrahim Babaei - Professor, Faculty of Electrical and Computer Engineering,University of Tabriz, Tabriz, Iran
Abstract:Multilevel inverters have been developed due to limitations of the conventional two-level voltage source inverters (VSIs). Most of the topologies of multilevel inverters that have been presented in the literature are based on the sharing of the rated voltage between the switches so that the switches with lower voltage ratings can be used. In these topologies, the current rating of all of the switches is equal to the rated output current. Therefore, they may have limitations in high-current application. Recently, the coupled-inductor based multilevel inverter topologies have been presented to overcome the mentioned problem. In these topologies, the current rating of the switches is lower than the rated output current. In other words, these topologies can increase output current in comparison with the switchescurrent. In this paper, a new generalized coupled-inductor based multilevel inverter is presented. The proposed topology consists of various coupled cells and can be extended to any number of voltage levels. This gives the generality and design flexibility for the proposed topology. If m cells are used in the proposed topology, the switches operate at the rated current equal to 1/ 2m of the rated output current. This shows a considerable in the switches current ratings. The number of voltage levels can be increased so that switches with lower current ratings can be used and at the same time, the quality of output voltage and current improves considerably. For the proposed topology, the pulse width modulation (PWM) method is also presented. The simulation results of the proposed 9-level inverter (in both single-phase and three-phase conditions) are presented to demonstrate the performance of the proposed topology.
Keywords:Multilevel inverter, coupled-inductor, high-current application
COI code: JR_JIAE-15-4_008
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Salehahari, Shirin & Ebrahim Babaei, 2018, New Coupled-Inductor Based Multilevel Inverter with Extension Capability, Journal of Iranian Association of Electrical and Electronics Engineers 15 (4), https://www.civilica.com/Paper-JR_JIAE-JR_JIAE-15-4_008.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Salehahari, Shirin & Ebrahim Babaei, 2018)
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Type: state university
Paper No.: 17093
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