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

0138275 Batarseh描述：该项目支持佛罗里达州奥兰多中佛罗里达大学电气工程和计算机科学学院的Issa Batarseh博士和约旦伊尔比德的约旦科技大学电气工程系Ahmad Harb博士之间的合作研究项目。本课题研究电力电子电路的分叉和混沌理论。目前应用于电力电子变流器的动态建模方法大多基于线性纹波近似，假设变流器的固有频率远低于开关频率，或者基于输出或占空比函数的时间平均，有效地消除了开关的采样效应。这些方法无法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，这些模型的精确度下降；因此，它们无法预测在该频率区域发生的不稳定性。该联合研究项目的目的是研究分叉理论在新开发的现代高频DC-DC转换器中的应用。该项目将重点研究两组电力电子电路：i)具有互耦输出滤波电感的并联输入/串联输出两模块Boost衍生DC-DC转换器；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，为分析电力电子换流器系统的行为提供一种新的方法。加州大学伯克利分校的一名美国研究生将参加这个国际合作项目。该项目符合INT的目标，即支持可能产生互惠互利和传播信息的讲习班。该项目由国际科学和工程办公室以及电气和通信系统司资助。

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.