US-Jordan Cooperative Research: Bifurcation and Chaos Theory as Applied To Power Electronic Circuits

项目描述：本项目支持佛罗里达州奥兰多中佛罗里达大学电气工程与计算机科学学院Issa Batarseh博士与约旦伊尔比德约旦科技大学电气工程系Ahmad Harb博士的合作研究项目。本课题研究电力电子电路的分岔和混沌理论。目前在电力电子变换器中应用的大多数动态建模方法要么是基于线性纹波近似，假设变换器的固有频率远低于开关频率，要么是对输出或占空比函数进行时间平均，有效地消除开关的采样效应。这些方法不能预测系统在高频下的行为。当调制频率接近开关频率的一半时，这些模型的精度下降；因此，它们不能预测在这个频率区域发生的不稳定性。本联合研究项目的目的是研究分岔理论在新开发的现代高频dc-dc变换器中的应用。该项目将重点关注两组电力电子电路：I)并联输入/串联输出双模块升压衍生DC-DC变换器，具有互耦输出滤波器电感，II)单级功率因数校正（PFC）电路。范围：该项目使美国和约旦科学家能够汇集他们互补的专业知识和资源，提供一种分析电力电子转换器系统行为的新方法。一名来自UCF的美国研究生将参与这个国际合作项目。该项目符合INT在支持可能产生互利和信息传播的讲习班方面的目标。该项目由国际科学与工程办公室和电气与通信系统司资助。

0138275 BatarsehDescription: This project supports a cooperative research project between Dr. Issa Batarseh, School of Electrical Engineering and Computer Science, University of Central Florida, Orlando, Florida and Dr. Ahmad Harb, Department of Electrical Engineering, Jordan University of Science and Technology in Irbid, Jordan. This project deals with bifurcation and chaos theory for power electronic circuits. Most of today's dynamic modeling methods applied in power electronic converters is based on either linear ripple approximation, assuming that the natural frequencies of the converter are well below the switching frequency, or on time-averaging the output or the duty ratio function, effectively eliminating the sampling effect of the switch. These methods fail to predict the system behavior at high frequencies. The accuracy of these models degrades as the modulation frequency approaches one-half the switching frequency; hence they fail to predict the instability occurring in this region of frequencies. The objective of this joint research project is to investigate the application of bifurcation theory to newly developed modern high frequency dc-dc converters. The project will focus on two groups of power electronic circuits: I) parallel-input/series-output two-module boost-derived DC-DC converter with mutually coupled output filter inductors, and II) Single-stage Power Factor Correction (PFC) circuits. Scope: This project enables the US and Jordanian scientists to pool their complementary expertise and resources in providing a new approach to analyzing the behavior of power electronics converter systems. One US graduate student from UCF will participate in this international collaborative project. The project meets the INT objective in supporting workshops where mutual benefits and dissemination of information is likely to result. This project is funded by the Office of International Science and Engineering and the Division of Electrical and Communications Systems.