U.S.-Jordan Cooperative Research: Application of the Bifurcation and Chaos Theory to Soft-Switching Power Factor Correction Circuits

项目描述：本项目支持由位于佛罗里达州奥兰多市的中佛罗里达大学电气与计算机工程系Issa Batarseh博士和位于约旦伊尔比德的约旦科技大学电气工程系Ahmed Harb博士合作的项目。该项目涉及现代控制理论在软开关功率因数校正电路动态建模中的应用。利用软开关技术对高频交直流功率因数校正的混沌行为进行了有限的研究。提出的项目的主要目标是将现代控制技术应用于新开发的功率因数校正拓扑，目标是电力处理系统中不断下降的电能质量，从而提高系统性能。更具体地说，项目的重点将放在具有直接能量传递的高频谐振单级功率因数方案上。pi将对PFC电路的动态稳定性进行分析、仿真和实验研究。为本研究选择的拓扑是基于pi在先前资助的NSF项目中所做的研究。这项工作采用的程序是首先开发所提出的转换器在开环和闭环条件下的离散大信号模型，然后在Spice和Mat实验室验证所开发的模型。在PFC电路中使用分岔和混沌理论的影响是，它将导致非线性控制的发展，以减轻甚至消除可能的不稳定振荡。这将提高PFC电路的性能，并对许多其他电力电子电路的动态研究产生影响。范围和更广泛的影响：研究结果可以导致开发适用于各种类型的转换器的分析方法，并导致设计更稳定的转换器的能力。功率因数校正在电源变换器的节能特性中起着重要作用。电能质量是一个大问题，因为我们的社会必须处理如此多的电子设备，依赖于高质量的电力。该项目将促进中东区域能源效率领域的国际合作。

0423645 BatarsehDescription: This project supports a cooperative project by the Dr. Issa Batarseh, Department of Electrical and Computer Engineering at University of Central Florida, Orlando, Florida and Dr. Dr. Ahmed Harb, Electrical Engineering Department, Jordan University of Science and Technology, Irbid, Jordan. The project deals with the application of modern control theory to dynamic modeling of soft switching power factor correction circuits. Limited research work has been conducted on exploring the chaos behavior of high frequency ac-dc power factor correction with soft-switching technique. The main objective of the proposed project is to apply modern control techniques to newly developed power factor correction topologies that target declining power quality in power processing systems and thereby improve system performance. More specifically, the focus of the project will be on the high-frequency resonant single-stage power factor scheme with direct energy transfer. The PIs will study and analyze the dynamic stability of the PFC circuit analytically, simulation and experimentally. The topologies selected for this study were based on the research done by the PIs in previously funded NSF projects. The procedure adopted for this work is to first develop the discrete large-signal model of the proposed converters under open- and closed-loop conditions, and then verify the developed models in Spice and Mat lab. The impact of using bifurcation and chaos theory in PFC circuits is that it will lead to the development of a nonlinear control to mitigate or even to eliminate possible unstable oscillations. This will improve the performance of the PFC circuit and will have impact on dynamic study of much other power electronic circuit.Scope and broader impact: The research results can lead to developing analytical methods that are applicable to various types of converters and leading to the ability to design more stable converters. Power factor correction plays a major role in energy saving features of power converters. Power quality is a major issue, as our society has to deal with so many electronic equipments that depend on high-quality electric power. This project will promote international collaboration in the area of energy-efficiency in the Middle East region.