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dc.contributor.author Shawky, Ahmed
dc.contributor.author Aly, Mokhtar
dc.contributor.author Alhosaini, Waleed
dc.contributor.author Ahmed, Emad M.
dc.contributor.author Mohamed, Emad A.
dc.contributor.author Alshahir, Ahmed
dc.date.accessioned 2024-09-26T00:53:47Z
dc.date.available 2024-09-26T00:53:47Z
dc.date.issued 2024
dc.identifier.issn 2169-3536
dc.identifier.other Mendeley: 4af48267-6675-3104-9485-bba4a36a38bb
dc.identifier.uri https://repositorio.uss.cl/handle/uss/13969
dc.description Publisher Copyright: Authors
dc.description.abstract Single-stage differential mode inverters (DMI) have been extensively utilized in three-phase grid-connected systems due to several advantages, such as few semiconductor devices resulting from their simple and modular configuration. Nevertheless, the modulation and control strategy require further enhancement to enable more efficient power conversion across various operations. Therefore, this paper introduces a detailed analytical model of the SEPIC-DMI, leading to the development of a hybrid discontinuous modulation scheme pulse width modulation (DMS-PWM), which incorporates zero voltage switching (ZVS), denoted as Hybrid DMS-ZVS-PWM approach. In the proposed strategy, the duty cycle of SEPIC-DMI is zero for one-third of the grid frequency cycle, which leads to minimizing conduction and switching power losses. Moreover, the voltage stress on the components is significantly reduced due to DMS-PWM. For ZVS, a simplified active-clamp circuit is proposed and designated using a single switch and two small capacitors. The proposed active-clamp circuit is integrated into the SEPIC-DMI to verify SEPIC power switches’ ZVS and zero current switching (ZCS). The ZVS/ZCS improves the inverter efficiency by major minimization in power losses. The mathematical derivations and performance measurements (simulation and experiment) are provided to show the superiority of the proposed hybrid DMS-ZVS-PWM method. The peak efficiency of SEPIC-DMI is enhanced from 90% to 94%, and the voltage stress is curtailed in all components with 13%. en
dc.description.abstract Single-stage differential mode inverters (DMI) have been extensively utilized in three-phase grid-connected systems due to several advantages, such as few semiconductor devices resulting from their simple and modular configuration. Nevertheless, the modulation and control strategy require further enhancement to enable more efficient power conversion across various operations. Therefore, this paper introduces a detailed analytical model of the SEPIC-DMI, leading to the development of a hybrid discontinuous modulation scheme pulse width modulation (DMS-PWM), which incorporates zero voltage switching (ZVS), denoted as Hybrid DMS-ZVS-PWM approach. In the proposed strategy, the duty cycle of SEPIC-DMI is zero for one-third of the grid frequency cycle, which leads to minimizing conduction and switching power losses. Moreover, the voltage stress on the components is significantly reduced due to DMS-PWM. For ZVS, a simplified active-clamp circuit is proposed and designated using a single switch and two small capacitors. The proposed active-clamp circuit is integrated into the SEPIC-DMI to verify SEPIC power switches’ ZVS and zero current switching (ZCS). The ZVS/ZCS improves the inverter efficiency by major minimization in power losses. The mathematical derivations and performance measurements (simulation and experiment) are provided to show the superiority of the proposed hybrid DMS-ZVS-PWM method. The peak efficiency of SEPIC-DMI is enhanced from 90% to 94%, and the voltage stress is curtailed in all components with 13%. es
dc.language.iso eng
dc.relation.ispartof vol. 12 Issue: Pages: 109832-109846
dc.source IEEE Access
dc.title Hybrid DMS-ZVS-PWM With In-Depth Mathematical Model for Boosting Efficiency of Grid-Connected SEPIC Differential Mode Inverter en
dc.type Artículo
dc.identifier.doi 10.1109/ACCESS.2024.3437768
dc.publisher.department Facultad de Ingeniería, Arquitectura y Diseño
dc.publisher.department Facultad de Ingeniería y Tecnología


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