发电机剩磁感应的残压,折算到励磁整流变压器副边的电压值很小,难以建立发电机端电压,故水轮发电机的励磁调节器是采用蓄电池或交流整流两种起励方式。蓄电池起励方式,每次开机发电都要进行电池充磁,激磁起励建压;交流整流起励方式,一旦发电机组停 Remaining residual voltage induction generator, converted to excitation rectifier transformer secondary voltage value is very small, it is difficult to establish the generator terminal voltage, so the hydro-generator excitation regulator is the use of battery or AC rectifier two kinds of excitation methods. Battery excitation mode, each time you start the power to be magnetized battery, excitation excitation excitation pressure; AC rectifier excitation mode, once the genset stop