摘要
本文提出一种计算折算到定子的汽轮发电机转子阻尼电路阻抗的方法。应用表面阻抗与输入阻抗概念,分别计算实心的转子铁心与非磁性金属槽楔的一相阻抗。通过有限的非线性理论来考虑铁心饱和的影响,再用脉振磁势等值以及视在功率等值方法,将阻抗折算到定子的d、q轴。本文提出的方法简单实用。通过实例计算,结果令人满意。
A method for the calculation of the rotor damper circuits impedances, referred to the stator, of turbogenerators is presented. Using the surface impedance and the input impedance respectively, the impedance per phase for the solid rotor steel and the non-ferrous metallic slot wedges is calculated. The effect of the magnetic saturation of rotor steel is considered by using the limiting nonlinear theory. The impedances are referred to the d-axis and q-axis stator winding according to the M.M.F.and apparent power unchanging methods. The method presented is simple and practical and the calculation results are Satisfactory.
