交流励磁发电机稳态运行的研究

Analysis of AC Excited Generator during Steady-State Operation

根据交流励磁发电机 (ACEG)的数学模型 ,对 ACEG的稳态运行性能进行分析 .利用MATLAB5 .3的矩阵运算和符号运算功能导出了 ACEG定、转子的有功、无功功率和电磁转矩表达式 ,绘制出功率和转矩随定、转子电压综合矢量间相角变化的曲线 ,并由此得出可以通过转子侧有功和无功功率的较小变化经电磁放大来调节定子侧有功和无功功率 ,以及 ACEG具有转差静稳定的特性 .

According to mathematic models of AC excited generator(ACEG), the stable performance of ACEG was analyzed. In order to get the expressions of active and reactive power in the stator and rotor, and the electromagnetic torque, the symblic and matrixing math toolbox is used to simplify the computation. These figures of T em - s,P 1,Q 1,P 2 and Q 2 are drawn. From the figures, it was concluded that the regulation of P 1 and Q 1 can be realized by the E M amplification of a smaller regulation quantity of P 2 and Q 2, and ACEG has both the characteristic of slip steady stability and a higher overload capability as compared with the normal synchronous generator.