【摘要】 本文采用沿轨线求能量的积分方法,以李亚普诺夫定理的推论形式,定义了阻尼能量函数D（x₀,X）。文章指出,在分析同步电机的自动励碱调节的动态特性时,1,胡尔维茨准则的最后一个不等式△n-1正比于系统的阻尼系数;2,在大振荡情况下,当一个周期的部分时间内系统是负阻尼时,整个系统仍能稳定运行的阻尼条件。对PSS在大振荡时的阻尼效应,文章着重进行了分析。并提出改善的意见。更多还原

【Abstract】 Damping Energy Function is defined as D （X₀,X）=∫（x₀, x） K（x） x_i dx_i-1 by integration of energy along its path, in accordance with Lyapunov Theorem. In analysis of the dynamic performance of synchronous machine excitation systems, two points are shown: 1. Among the criteria of Hurwit, △_n-1 is proportional to the damping coefficients of systems. 2. During a large scale oscillation, the stabilizing condition of damping effect can be derived, though the system is negative damping in part of a period. The damping effect on PSS under large scale oscillation is emphatically discussed and suggestions for improvement are presented.更多还原