一种基于多级降压变换器的整流器，具有正弦输入和单位功率因数，适用于中压(4160-7200 V)应用

Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475) Pub Date : 1999-07-27 DOI:10.1109/PEDS.1999.794609

M.L. Zhang, B. Wu, Y. Xiao, F. Dewinter, R. Sotudeh

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引用次数: 1

摘要

提出了一种适用于大功率(0.5 ~ 10 MVA)电流源交流电机驱动的新型整流器拓扑结构。该整流器由多绕组变压器、多电平二极管整流器和多电平降压变换器组成。在任何工作条件下，整流器的输入功率因数和输入电流都接近于均匀。此外，该整流器还具有运行可靠、高压运行能力强等特点。本文讨论了开关方式、输入电能质量以及变压器漏电感差异对系统性能的影响等系统设计考虑因素。并给出了5 kVA/208 V四电平样机的实验结果。

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A multi-level buck converter based rectifier with sinusoidal inputs and unity power factor for medium voltage (4160-7200 V) applications

A novel rectifier topology for high power (0.5 to 10 MVA) current source based AC motor drives is proposed. This rectifier is composed of a multi-winding transformer, a multilevel diode rectifier and a multi-level buck converter. The rectifier produces near unity input power factor and sinusoidal input current under any operating conditions. In addition, the proposed rectifier has a few other features such as reliable operation and high voltage operation capability. This paper addresses a number of system design considerations such as switching pattern, input power quality and the effects of discrepancies of transformer leakage inductances on the system performance. Experimental results on a 5 kVA/208 V four-level prototype are also included.

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Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)

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