标题：Modulation of three-level Z-source indirect matrix converter
作者：Liu, Xiong ;Loh, Poh Chiang ;Peng, Fang Zheng ;Wang, Peng ;Gao, Feng
作者机构：[Liu, Xiong ;Loh, Poh Chiang ;Wang, Peng ] Division of Power Engineering, School of Electrical and Electronic Engineering, Nanyang Technological Unive 更多
会议名称：2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
会议日期：12 September 2010 through 16 September 2010
来源：2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
摘要：This paper proposes an actively controlled threelevel Z-source matrix converter with capability of performing output voltage buck-boost, and producing sinusoidal input-output quantities. The converter is in principle realized by inserting a Z-source impedance network to the dc-link of the otherwise voltage-buck only indirect matrix converter (IMC), formed by cascading a front-end current source rectifier and a rear-end three-level inverter together. Topology wise, the proposed converter is therefore not distinctly different. Rather, the focus is on its modulation control, whose hidden details, different from those of traditional IMC, must be unveiled before voltage buck-boost and sinusoidal input-output quantities can be produced simultaneously, together with a lower commutation count and narrow pulse avoidance. This theme of investigation is now pursued in the paper with the converter operational modes and optimal modulation possibilities discussed extensively to bring forth its attractiveness for ac-ac buck-boost energy conversion, as validated in simulation. Index Terms-Buck-boost, Modulation, Matrix converter, Neutral Point Clamped, Z-source. © 2010 IEEE.