【摘要】 本文提出了换流器数字仿真的一种新的计算方法,即节点合并一分离(还原)法。该方法将换流阀的通断处珲成电路节点的合并与分离。当电路结构发生变化时,通过简单的修正运算便可导出新电路方程的系数矩阵。本方法原理简单,计算速度快,占用内存少。本文利用计算跃变量的方法消除了隐式梯形积分法用于换流器仿真的所存在的非原型数值振荡,经过一个单极双桥HVDC系统计算,结果令人满意。更多还原

【Abstract】 A novel method for digital simulation of HVDC converter is presented in this paper, switching-on and switching-off of valves in the converter circuit is expressed as combination and separation of nodes respectively. The circuit equation coefficient matrix for the new topology structure of the circuit can be easily obtained by simple correcting original one- The proposed method is characterized by its simplicity of principle, fastness of computation and small memory space needed. The numerical oscillation is completely eliminatel by calculating the jump voltages in the case of using The implicit trapezoidal integration method to converter simulations. The method is programmed and used for the simulation of a HVDC system with one pole and two bridges, the results are satisfactory.更多还原