永磁阵列汽轮发电机矢量扰动补偿幅频分析

Analysis of Vector Disturbance Compensation Amplitude Frequency for Permanent Magnet Array Turbo Generator

汽轮发电机定子匝间具有支路环流特性,在相电流过零点附近出现扰动死区,需要对电流极性进行对数复频分析面试线死区扰动补偿。提出一种基于永磁阵列分析的汽轮发电机矢量扰动补偿对数幅频分析方法,算法采用永磁阵列分析方法,将汽轮发电机的功率估算值回馈给指令电压抵消扰动,实现在线死区补偿,计算汽轮发电机的磁偶极子距反射面的距离,提高了发电机的对数幅频效应和控制性能,仿真实验验证该算法的优越性能。结果表明,采用该永磁阵列矢量扰动补偿方法,实现永磁阵列汽轮发电机矢量扰动补偿对数幅频分析,电流低次谐波含量明显减小,电流波形正弦度得到改善,THD从3.3%下降到2.6%,控制精度提高。

Branch circulation characteristics of turbo generator stator inter turn has appeared dead, disturbance in the phase current is near zero, the need for current polarity complex frequency analysis interview line dead time disturbance compen?sation log. Put forward a kind of turbo generator vector analysis of permanent magnet array based on disturbance compensa?tion logarithmic amplitude frequency analysis method, the algorithm using permanent magnet array analysis method, the power turbine generator estimates back to the command voltage offset perturbations, the realization of online dead time com?pensation, calculation of turbo generator magnetic dipole distance of the reflecting surface distance, the excitation current system is generated. Improve the generator logarithmic amplitude frequency effect and control performance, and the simula?tion experiments verify the superior performance of the algorithm. The results show that, with the permanent magnet array vector of disturbance compensation method, realize the disturbance compensation log permanent magnet array turbo genera?tor vector amplitude frequency spectrum analysis, low current harmonic content decreased obviously, current sine degree is improved, THD decreased from 3.3%to 2.6%, improve the control precision is improved.