Z-Source Topology for the Entire Circuit Spectrum of Power Conversion

适用于整个功率转换电路谱的 Z 源拓扑

• 批准号: 0424039
• 负责人: Fang Peng
• 金额: $ 16万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-10-01 至 2007-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0424039&HistoricalAwards=false
• 关键词: Source; Topology; Entire; Circuit; Spectrum

Today's power conversion circuits are based on the two conventional topologies: voltage-source and current-source, a "two-leg" structure supporting all existing power conversion circuits. The conventional voltage-source (V-source) and current-source (I-source) converters have their theoretical limitations that prevent economical and efficient solutions to many applications. For example, the V-source inverter is a buck converter that cannot produce an output voltage greater than the source voltage. This limitation often requires an additional dc-dc boost converter for many applications such as batteries, photovoltaic, and fuel cells, which makes the power conversion have much lower efficiency, larger size, and higher cost. In this project, we investigate a new type of power conversion circuits, an impedance-source (Z-source) power converter that was proposed two years ago with the intent to overcome the problems associated with the conventional V- and I-source converters.This research project is to extend and apply the Z-source topology to the entire circuit spectrum (categories) of power electronics, including dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion and to develop their control theory. With the successful extension and application of the Z-source concept to all power conversion categories, a "third leg" will be established. This "third leg" will change the entire spectrum of power electronics circuits and provide a third option to optimize performance, maximize efficiency, and minimize cost and size.

当今的功率转换电路基于两种传统拓扑：电压源和电流源，一种支持所有现有功率转换电路的“两条腿”结构。传统的电压源（v源）和电流源（i源）变换器有其理论局限性，阻碍了许多应用中经济高效的解决方案。例如，v源逆变器是一种降压转换器，它不能产生大于源电压的输出电压。这种限制通常需要一个额外的dc-dc升压转换器用于许多应用，如电池、光伏和燃料电池，这使得功率转换效率低得多，尺寸更大，成本更高。在这个项目中，我们研究了一种新型的功率转换电路，一种两年前提出的阻抗源（z源）功率转换器，旨在克服与传统V源和i源转换器相关的问题。本研究项目旨在将z源拓扑扩展并应用于电力电子的整个电路频谱（类别），包括dc- ac， ac- dc， ac- ac和dc- dc功率转换，并发展其控制理论。随着z源概念在所有功率转换类别中的成功扩展和应用，将建立“第三条腿”。这“第三条腿”将改变整个电力电子电路的频谱，并提供优化性能、最大化效率、最小化成本和尺寸的第三种选择。