导纳法与模态法结合的复杂系统功率流特性研究

以功率流的研究方法对柔性多维耦合系统从子系统的层面进行深入研究,将子结构导纳法与模态综合法结合,提出了预测一般耦合系统功率流的公式.子系统数据可以通过有限元模型或实验模型提供.与单纯的模态综合方法不同,由于得到矩阵的大小和使用的模态数无关,可解决大模型中的计算精度与模型阶数的矛盾.该模型可方便地研究各子系统参数对于耦合系统的功率流传递特性与损耗特性的影响.

Study on power flow characteristics of complicated system based upon the method combined mobility and mode synthesize

Studied the compliant coupled multi-dimension system based upon the subsystems in power flow concept.Combined the methods of mobility and mode synthesize,a new general mobility matrixes formula is developed to describe the compliant coupled system and the power flow transmission characteristics.The subsystem's parameters can be obtained by means of finet element analysis or experiment.Different form general mode synthesize methed,the dimensions of mobility matrixes have relationship only with the number of subsystem's interfaces but not with that of the summing modes,the conflict between the calculation precision and model orders can be solved.With the developed model how the modification of subsystem's parameter affects the characteristics of power flow transmission and disspation of coupled system can be easily evaluated.