工频变压器准降频应用的研究

Study on Application of Power Frequency Transformer with Quasi-frequency-reducing

目的 根据变压器铁芯磁化的工作机理,找出消除偏磁的方法.方法 利用开关器件关断时在绕组中产生的反电势,将该部分电能存储于消磁电容器之中.结果 利用消磁电容器放电时产生的反方向电流,抵消了铁芯中的剩磁.结论 最终使得变压器准降频使用成为可能.

Aim\ An approach to eliminate magnetic bias is found according to the magnetization principle of transformer core. Methods\ By using the countervoltage, which is produced while the switch device is shut in the winding, the energy is stored in the degaussing capacitor. Results\ The remanence is offseted by using the countercurrent, which is produced during the discharge of the degaussing capacitor. Conclusion\ It is made possible to use the transformer with the quasifrequencyreducing.