magnetic systems

• In the non - coaxial bwo of l - band , the radius of the slow - wave structure is very large , and the volume and weight of the guiding - magnetic system are also very large . thus , the non - coaxial bwo of l - band is bulky and lumbersome and is inconvenient for real application
  若采用非同轴相对论返波振荡器实现l波段的微波输出,则要求慢波结构的平均半径很大,导引磁场系统的体积和重量会变得较大,这给器件的小型化带来了很大的困难。
• In order to resolve the question , in the thesis a simulation arithmetic of hydro - electrical system is put up . the equations of hydro - electrical system are divided to two parts , one of which consists of the differential equations of conduit system , hydro turbine and generator ' s rotator and is solved by characteristic equation arithmetic , the other of which consists of the differential equations of generator , magnetic system and grid and is solved by longge - kuta arithmetic or covert integrated arithmetic . through the alternative solving of the two parts , the simulation results of the large - disturbance transient could be abstained eventually
  为解决这一问题，本文提出了一种将水力系统和电力系统方程交替求解的水电系统联合仿真算法，即将包括输水系统、水轮机以及机组转子等部分的水力系统差分方程作为一部分，将包括同步发电机、励磁系统以及电网等部分的电力系统微分方程或差分方程作为另一郑州大学工学硕士论文部分，对前一部分采用特征线法求解，对后一部分根据模型形式采用龙格一库塔法或隐式积分法等算法求解，这两部分的求解过程交替进行，最终即可得到水电系统大扰动过程的仿真结果。