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本文讨论了同步发电机可控硅励磁系统逆变灭磁原理和逆变过程,提出了他励、自励可控硅励磁系统逆变灭磁公式,解决了自励可控硅励磁系统逆变灭磁计算问题。认为灭磁电压倍数相等时自励系统逆变灭磁速度比对常数电阻放电灭磁方式灭磁速度快;而且认为发电机灭磁是否终了不应以发电机灭磁电流为零来定义,而应以发电机端电压标么值低于0.05额定值为定义。
In this paper, the principle of inverter demagnetization and the inverter process of the synchronous generator excitation system are discussed. The inverse demagnetization formula of the excitation system of the self-excited thyristor excitation system is put forward. The self-excitation thyristor excitation system inverter Demagnetization calculation problem. It is considered that the demagnetization speed of the self-excited system is faster than the demagnetization speed of the self-excited system when the demagnetizing voltage is equal, and the demagnetization speed of the self-excited system is faster than that of the constant resistance discharge demagnetization method. Generator terminal voltage should be lower than the nominal value of 0.05 as the definition.