The Auto-Transformer Rectifier Unit（ATRU） is one preferred solution for high-power AC/DC power conversion in aircraft. This is mainly due to its simple structure, high reliability and reduced k VA ratings. Indeed, t...The Auto-Transformer Rectifier Unit（ATRU） is one preferred solution for high-power AC/DC power conversion in aircraft. This is mainly due to its simple structure, high reliability and reduced k VA ratings. Indeed, the ATRU has become a preferred AC/DC solution to supply power to the electric environment control system on-board future aircraft. In this paper, a general modelling method for ATRUs is introduced. The developed model is based on the fact that the DC voltage and current are strongly related to the voltage and current vectors at the AC terminals of ATRUs. In this paper, we carry on our research in modelling symmetric 18-pulse ATRUs and develop a generic modelling technique. The developed generic model can study not only symmetric but also asymmetric ATRUs. An 18-pulse asymmetric ATRU is used to demonstrate the accuracy and efficiency of the developed model by comparing with corresponding detailed switching SABER models provided by our industrial partner. The functional models also allow accelerated and accurate simulations and thus enable whole-scale more-electric aircraft electrical power system studies in the future.展开更多
Large-power industrial power supply system is generally recognized as high energy-consuming,while the rectifier transformer is the key for efficiency promotion.This article proposes a novel transformer winding design ...Large-power industrial power supply system is generally recognized as high energy-consuming,while the rectifier transformer is the key for efficiency promotion.This article proposes a novel transformer winding design strategy with the aims of harmonic elimination and loss reduction.By means of the innovative impedance matching design,the harmonic magnetic potential self-balance between the secondary windings is realized for harmonic suppression.Considering the impedance constraint and the margin of structural parameters,the method of resistance loss reduction is explored for the proposed transformer by optimizing the dimension parameters.The transformer-filter combination is first modeled to reveal the filtering principle and obtain the impedance precondition.Then,the transformer efficiency is optimized within the constraints.At last,the transformer prototype together with the power supply system is tested.The experimental results show that the transformer efficiency can be improved by 0.81%,and the current total harmonic distortion at primary side is dropped by 50%.展开更多
文摘The Auto-Transformer Rectifier Unit（ATRU） is one preferred solution for high-power AC/DC power conversion in aircraft. This is mainly due to its simple structure, high reliability and reduced k VA ratings. Indeed, the ATRU has become a preferred AC/DC solution to supply power to the electric environment control system on-board future aircraft. In this paper, a general modelling method for ATRUs is introduced. The developed model is based on the fact that the DC voltage and current are strongly related to the voltage and current vectors at the AC terminals of ATRUs. In this paper, we carry on our research in modelling symmetric 18-pulse ATRUs and develop a generic modelling technique. The developed generic model can study not only symmetric but also asymmetric ATRUs. An 18-pulse asymmetric ATRU is used to demonstrate the accuracy and efficiency of the developed model by comparing with corresponding detailed switching SABER models provided by our industrial partner. The functional models also allow accelerated and accurate simulations and thus enable whole-scale more-electric aircraft electrical power system studies in the future.
基金supported in part by the National Natural Science Foundation of China(No.52207146)in part by the Jiangsu Province Engineering Research Center of High-Level Energy and Power Equipment(No.JSNYDL-202401)+2 种基金in part by the Science and Tech-nology Innovation Program of Hunan Province(No.2023GK2007)in part by the Natural Science Founda-tion of Hunan Province of China(No.2024JJ3033)in part by the National Natural Science Foundation of China(No.62373373).
文摘Large-power industrial power supply system is generally recognized as high energy-consuming,while the rectifier transformer is the key for efficiency promotion.This article proposes a novel transformer winding design strategy with the aims of harmonic elimination and loss reduction.By means of the innovative impedance matching design,the harmonic magnetic potential self-balance between the secondary windings is realized for harmonic suppression.Considering the impedance constraint and the margin of structural parameters,the method of resistance loss reduction is explored for the proposed transformer by optimizing the dimension parameters.The transformer-filter combination is first modeled to reveal the filtering principle and obtain the impedance precondition.Then,the transformer efficiency is optimized within the constraints.At last,the transformer prototype together with the power supply system is tested.The experimental results show that the transformer efficiency can be improved by 0.81%,and the current total harmonic distortion at primary side is dropped by 50%.
