一种用于开关电源的电力电子集成模块的特性研究

提出了一种基于组合集成思想的电力电子系统集成方案．设计了基于铝基板的功率集成模块．并对它的散热性能与电磁性能进行了仔细分析，最后给出了实验结果。     

基于仿生学的电力电子系统分散自治控制

从仿生学的角度出发,模仿人体系统分布自治控制的特点,复杂电力电子系统的可靠性有望得到提高.电力电子细胞是对应于人体细胞的电力电子系统的最小单位,与电力电子系统集成模块具有很强的联系,该文介绍了电力电子系统集成的国内外发展现状,进一步重点研究用分立器件构建的分散自治模块,构建的实验室原型可以方便的组成若干功率变换器,实验结果表明以这种模块为基础的分散自治控制是可以实现的.     

分布式供电系统中源变换器输出阻抗的研究

随着功率电子变换技术的发展,构建大型电力电子供电系统越来越多地采用模块集成的方式。美国海军提出的电力电子积木的概念对模块级的系统集成做出了很大贡献。该文提出一种新颖的系统集成的观点,即从系统级的高度将分布式供电系统中的源变换器的输出阻抗和负载变换器的输入阻抗作为标准化研究的对象。该文以分布式供电系统中常见的移相全桥DC-DC变换器为例,对输出阻抗进行了模型验证,并详细分析了输出阻抗的特点。为了便于将来制定出Buck类DC-DC模块的输出阻抗的标准,通过实验揭示了移相全桥DC-DC变换器的输出阻抗随功率等级、开关频率和控制方式变化时的规律。     

DC/DC模块有源均流技术研究

在电力电子系统集成研究中，利用标准模块集成电力电子应用系统的过程中，必然设计到标准模块的级联和并联运行。该文主要研究标准模块的并联运行技术。如何平均分配负载电流是并联技术的一个重要方面。在中等功率场合，有源均流法被广泛采用。该文从均流的内在原理出发，对各种均流方法进行了系统的总结和分类，总结了18种可能的有源均流方法。并对18种有源均流方法进行了系统的仿真研究。通过仿真分析，得到8种实用的均流方法，并对这8种方法的优缺点进行了讨论。从中功率系统集成的角度出发，对方案进行了优选，在通用场合，外环调节的均流控制方法是较好的选择。     

电力电子系统集成研究进展与现状

电力电子系统集成是当前电力电子技术领域人们普遍关注的前沿课题.本文就电力电子系统集成的若干关键技术:如电力电子系统集成芯片/模块标准化、集成系统芯片/标准集成模块关键技术、电力电子系统集成理论与方法等方面的研究进展与现状进行简述.     

电力电子系统集成研究

电力电子系统集成是一项电力电子技术与材料科学、热处理技术、结构工艺、电磁兼容等多学科边缘交叉渗透的综合性工程，可实现电力电子系统的高功率密度、高效、高可靠性以及低成本。本文从系统、模块、开关单元和元件单元三个层面分析了电力电子集成系统。系统级涉及界面定义、交互作用、通讯、EMI、容错能力和模块的并联等问题。模块级的问题主要包括封装、建模、控制通讯三个方面。讨论了电力电子系统集成中的关键技术以及电力电子系统集成在电力电子技术发展中的重要作用。     

基于电力电子集成技术的开关电源模块研究

提出了一种基于组合集成思想的电力电子系统集成方案;设计了基于铝基板的功率集成模块,对它的散热性能进行了分析;根据电路的等效振荡电路,计算了电路的寄生电感,并与传统的结构进行了对比,给出了对比实验结果。     

基于区域控制器的IGBT模块热控制技术研究

含有电力电子模块的电力系统设计通常受限于热限制,主要是考虑系统整体损耗和峰值电流的影响。热控制技术可以改善微网逆变器、分布式储能装置、动态无功补偿设备和交直流电机驱动等应用中电力电子功率模块的稳态和瞬态热机械应力。此处提出的控制技术通过控制功率模块的结温,借助在线结温值计算、开关频率调节和限制开关损耗的电流阈值防止绝缘栅双极型晶体管(IGBT)功率模块发生过热和功率循环故障。通过不同热运行区域的控制,保证电力电子功率模块持续运行,提高功率模块的可靠性和多晶硅热容量的利用率,避免电力电子模块在电力系统应用中的过度设计。实验结果和有限元分析过程进一步验证了所提热控制技术的有效性和实用性。     

基于SiC MOSFET的电力电子变压器双有源桥功率模块设计

将宽禁带半导体器件SiC MOSFET引入电力电子变压器子模块的功率变换部分,通过提高开关频率、降低无源器件的体积及重量,可有效提高电力电子变压器的功率密度。从工程应用需求出发,介绍一种基于SiC MOSFET的电力电子变压器DAB(双有源桥)功率模块的设计方案,具体包括功率电路的原理分析及电路设计、控制保护电路设计及SiC MOSFET驱动电路设计,对SiC MOSFET进行双脉冲测试和短路测试,对功率模块进行性能试验和系统试验,从而验证了功率模块运行的可靠性和高效性。     

基于电力电子系统集成概念的传感器模块技术

在电力电子系统集成的基础上，提出了一种能够实现电机端电压和电流、转子位置和速度、磁通和转矩检测的概念性集成传感器模块，讨论了利用凸极跟踪方法实现转子位置自检测的原理。实验表明，这种传感器集成方式能在永磁同步电机全速范围（包括零速和极低转速）准确地观测出转子的位置和速度，实现了位置，速度传感器与电机本体的集成。以此为基础设计出的概念性的集成传感器模块可配合集成化的电力变换模块，方便、简洁和可拓展地构成高性能的电力电子转动应用系统。     

Overview of Power Loss Measurement Techniques in Power Electronics Systems

Measuring power loss accurately is of great importance for power electronics systems design and for assessing system performance and reliability. This paper reviews various power loss measurement techniques in power electronics systems. A brief overview of electrical methods for loss measurements is given. Calorimetric methods, which are considered the most accurate of this purpose, are described along with their implementations. The pros and cons of various techniques are discussed and compared for estimating the losses in integrated power electronic modules     

基于能量流图的电力电子系统可视化设计与分析

电力电子系统通过功率半导体器件的开关控制来实现电磁能量的高效变换,提高系统的变换能力和可靠性是其终极目标。尝试以系统中的能量及能量流为状态变量进行建模,建立变换系统的能流模型,可视化并直观地描述电力电子变换系统电磁能量的分布和传递情况。以较复杂的多端口组合式电力电子变换器为例,建立"能流"的基本概念,设计构建能流图拓扑并给出可视化设计方法,结合科学计算可视化技术设计静态和动态界面,构建了一种基于能量流图分析方法的电力电子变换器系统设计和分析平台。仿真和实验结果表明,能量流图分析方法能有效地表征电力电子系统大时间尺度的换流过程。     

无源滤波器参数计算

串联混合型有源滤波器的设计是一个包含无源和系统参数在内的整体优化过程,介绍了一种新的系统整体优化设计方法,这种设计方法根据现有的设计经验,全面考虑设计的要求和约束条件,利用现代电力电子仿真软件计算各无源滤波支路和系统参数,以电容器的安装容量最小作为优化目标来选择参数。实例分析的结果证明了设计过程的合理性。     

无源滤波器参数计算

串联混合型有源滤波器的设计是一个包含无源和系统参数在内的整体优化过程,介绍了一种新的系统整体优化设计方法,这种设计方法根据现有的设计经验,全面考虑设计的要求和约束条件,利用现代电力电子仿真软件计算各无源滤波支路和系统参数,以电容器的安装容量最小作为优化目标来选择参数。实例分析的结果证明了设计过程的合理性。     

电力电子和未来的航海电气系统(上)

明天的航海电气系统将同今天的系统有极大的不同。电力电子给予船舶上包括推进、电力分配、备用电源、声纳和雷达等在内的各种系统的进展以重要的影响。刚刚出现的新材料、新器件和新的系统概念(诸如宽带半导体材料、碳化硅基的电力半导体器件、电力电子模组(PEBB),以及集成功率系统)正在使、并将持续地使未来的航海系统有别于今天的系统,如同内燃船舶有别于蒸汽船舶。但是,这些正在实现的技术和有关概念还未被大家所周知,而且还有难于理解的地方。本文就将介绍这些新概念和新技术,指出潜在的影响力,并揭示新的设计方法,以推动航海电气系统的发展。     

The future of electronic power processing and conversion

At a workshop held on the Aeolian Islands in Sicily during May 2004 a group of academic and industry engineers from all over the world discussed the medium- and long-term future of power electronics and its applications in specific areas. The following main issues were identified and discussed: The demand is not for power electronic solutions but for system integration of electronic power processing. A more multidisciplinary approach is needed. We will witness a proliferation of energy storage in systems. The technology is in place and the improvement in system performance makes it worth while. A large penetration of power electronics into power systems will happen within the next 25-30 years. The main transmission grid will not be affected. The power electronics development will be in distributed generation and in the loads. The success of the integrated starter/generator (ISG), hybrid, or electric cars depends on political decisions more than on technological advances. However, the success of a recent Japanese hybrid car and the cost of oil could trigger the critical momentum for large-scale use of power electronics in automotive applications. We are moving toward standardized power supply building blocks for computers and other applications. The main push is for lower cost, and production technology becomes the important issue. Demands for improved performance in a diversity of applications will stimulate R&D in power electronics in the future. Intelligent control and energy management will come easily. Thermal and passive component integration is equally important and will require attention.     

Power electronics and future marine electrical systems

Tomorrow's marine electrical systems will be profoundly different from today's systems. Power electronics is making major impacts on virtually every marine system including propulsion, power distribution, auxiliaries, sonar, and radar. Newly emerging materials, components, and system concepts (such as wide band-gap materials, silicon-carbide-based power semiconductor devices, power electronics building blocks (PEBBs), and integrated power systems) are, and will continue, enabling future marine systems as different from today's systems as steam ships were to sailing ships. However, these enabling technologies and concepts are not well known and have been difficult to understand. This paper will introduce these new concepts and technologies, identify potential impacts, and explore new design methods to simplify marine electrical system development.     

串联混合型有源滤波系统的整体优化设计

介绍了一种新的串联混合型有源滤波器系统整体参数优化设计方法并给出了流程图。该法根据现有设计经验,全面考虑设计要求和约束条件,用仿真软件计算各无源滤波支路和系统参数,以电容器安装容量最小作为优化目标来选择参数。最后以10MVA的铁路滤波系统为例介绍了系统参数的整体设计过程。     

基于PEBB的分布式电力电子电源系统

电力电子组块 (PEBB)是一个集成的概念 ,以可互换的组件和模块的形式 ,使电力电子器件和组装技术标准化。介绍了PEBB的概念和结构 ,以及存在的一些问题 ;一种基于PEBB的分布式电力电子电源系统的研究情况也在此作了介绍。     

Volumetric optimal design of passive integrated power electronics module (IPEM) for distributed power system (DPS) front-end DC/DC converter

In most power electronics converters, the overall footprint and profile of the whole system are in large part determined by the footprint and profile of the passive components and the interconnections between them. Planar magnetics, integrated magnetics, and passive integration have been topics of research for the past few years to reduce the count, footprint, and profile of the passive components and, hence, increase the power density of the whole converter. This becomes especially prominent in distributed power system (DPS) front-end converters, as the trend is moving from the 2U (1U=1.75 in) standard toward the 1U standard. Chen, Strydom, and van Wyk presented an integration technology, which combines the planar magnetics, integrated magnetics, and passive integration techniques, to integrate all the high-frequency passive components in a DPS front-end dc/dc converter into a single passive integrated power electronics module (IPEM) to reduce the size and volume of the overall system. To optimally design the passive IPEM, an ac loss model and a thermal model are needed. Based on these models, the volumetric optimal design algorithm is presented. To evaluate the performance of the optimally designed passive IPEM, a passive IPEM prototype is constructed and tested. Comparisons are made between the passive IPEM and the discrete components from viewpoints of volume, profile, efficiency, and thermal management. The optimal design is verified by experimental results.