Novel proposal of hybrids rectifiers with voltage sag ride-through capability based on series DC voltage compensation technique

摘要

The trend for the development of more electric systems for aircrafts, microgrids, and industrial processes has been leading to the need of more efficient and reliable electronic converters. In this scenario, one can highlight the necessity of high power density rectifiers for reducing current harmonics and providing a stabilized intermediate dc-link for connection of electronic loads. Therefore, in this paper the authors present the analysis concerning the development of a novel proposal of hybrids rectifiers structures with wide range of DC voltage regulation based on Series DC Voltage Compensation Technique (SDCVC). The proposed SDCVC Technique provides voltage sag-ride through capability and assures high power density and high efficiency. In order to validated the effectiveness of the proposed solutions, preliminary modeling analysis was performed and corroborated by experimental results obtained through a 1 kW laboratory prototype of a single-phase hybrid rectifier that was put into operation under normal AC system operation, as well as under conditions of AC voltage dips.