升压型z源与准z源逆变器的比较分析

2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT) Pub Date : 2018-10-01 DOI:10.1109/ACEPT.2018.8610771

Wesley Poh Qi Tong, B. M. Muhammad Ramadan, T. Logenthiran

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引用次数: 3

摘要

本文对两种DC-AC转换器拓扑进行了比较分析，即z源逆变器(ZSI)和准z源逆变器(Q-ZSI)。在功能方面，Q-ZSI的工作原理与ZSI相似，能够在单级实现降压-升压反转和功率调节，可靠性更高。此外，Q-ZSI与ZSI共享相同的脉冲宽度调制(PWM)穿透方法，用于升压控制。虽然这两种拓扑结构具有许多相似的特征，但发现它们的瞬态输出特性存在固有的差异。利用PSCAD/EMTDC仿真环境，对ZSI和Q-ZSI进行了实验，分析了它们在不同升压因数下的瞬态响应。这包括浪涌电流和纹波的特性。仿真结果表明，在升压过程中，与ZSI相比，Q-ZSI具有许多独特的优点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Comparative Analysis between Z-Source and Quasi-Z-Source Inverters for Boost Operation

This paper presents a comparative analysis between two DC-AC converter topologies known as the z-source inverter (ZSI) and quasi-z-source inverter (Q-ZSI). In terms of functionality, the Q-ZSI operates similarly to the ZSI, whereby it is able to realize buck-boost inversion and power conditioning in a single stage with improved reliability. Additionally, the Q-ZSI shares the same pulse-width modulation (PWM) shoot-through methods with the ZSI for boost control. Although both topologies consist of many similar traits, it is discovered that there are inherent differences in their transient output characteristics. Using PSCAD/EMTDC simulation environment, experiments are performed on the ZSI and Q-ZSI in order to analyze their transient responses at different boost factors. This includes the characteristics of inrush current and ripple. The acquired simulation results have exhibited several unique merits of the Q-ZSI when compared to the ZSI during boost operation.

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2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)

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