电力电子变压器中直流母排杂散电感的影响机理和优化方法

项目名称： 电力电子变压器中直流母排杂散电感的影响机理和优化方法

项目编号： No.U1504518

项目类型： 联合基金项目

立项/批准年度： 2016

项目学科： 电工技术

项目作者： 朱艺锋

作者单位： 河南理工大学

项目金额： 27万元

中文摘要： 电力电子变压器是未来智能电网中的重要装置，而电力电子变压器中直流母排的杂散电感问题会影响其工作的可靠性和寿命。针对电力电子变压器中直流母排杂散电感的设计准则问题，对直流母排杂散电感的影响机理和优化方法进行研究。1）研究信号频率对母排杂散电感的影响机理，以及在高频和次高频信号共存情况下母排杂散电感的设计方法；2）研究相互隔离的两组母排间杂散电感的影响机理，并提出两组母排杂散电感的协同设计方法；3）研究母排温升对杂散电感的影响机理，并提出温升过大条件下对杂散电感的补偿方法。4）从电容的布局、母排层数、母排结构等方面提出杂散电感的优化方法。最后，采用理论分析、仿真和实验对比研究，找到电力电子变压器中直流母排低杂散电感的优化方法，为电力电子变压器直流母排的设计和应用提供重要的理论基础。

中文关键词： 电力电子变压器；直流母排；影响机理；优化方法；杂散电感

英文摘要： Power electronic transformer is an important device in the future smart grid. However, the stray inductance existing in the DC-busbar of power electronic transformers will affect their working reliability and life expectancy. To find out the design criterion of DC-busbar stray inductance for power electronic transformers, the influence mechanism of DC_busbar stray inductance and optimization methods are studied. 1) Make research on the influence mechanism of the bus signal frequency on stray inductance and design method of busbar stray inductance under the condition of high frequency and high frequency signal coexistence; 2) Make research on the influence of the two groups of busbar markings are scattered inductance mechanism, and put forward two sets of busbar stray inductance of collaborative design method; 3) The effect mechanism of temperature rise of busbar on stray inductance, and put forward one compensation method to stray inductance under the condition of too large temperature rise. 4) From the layout of the capacitance, layer number of bus, bus structure etc. find out the optimizing methods of stray inductance. Finally, using the comparative study on the theoretical analysis, simulation and experiment, find the optimization method for low stray inductance in DC-busbar in the power electronic transformer. This may provide an important theoretical basis for design and application of DC-busbar in power electronic transformers.

英文关键词： power electronics transformers;DC busbar; influence mechanism ;optimization method;stray inductance