Smith联接的单相自励感应发电机

针对需要单相电源的场合时有采用三相异步电机自动单相运行这种工况，对自励发电运行方式进行了分析。利用对称分量法导出了Smith联接的单相自励感应发电机对称运行条件及性能计算公式。计算表明：Smith联接的三相感应电机单相自励发电运行时，电压变化率较大，且离开平衡点负序电流迅速增加；利用最优化方法确定三相自励感应发电机不对称运行时的稳态工作点简单有效。实验结果与理论计算基本一致。

Single-phase Self-excited Induction Generator with Smith Connection

When needing single-phase power supply, aiming at the single-phase automatic operation working condition of three-phase induction generator, the self-excited generator operation mode was analyzed. Using symmetrical-component method, the symmetrical operation condition and performance calculating formula of single-phase selfexcited induction generator with Smith connection were derived. The result of computation indicates that the voltage variation rate of the Smith-connection-three phrase induction morro, when it operates at single-phrase-self-excited generating state, is large, and its negative sequence current will increase surprisingly. The determination, via optimigation method, of the static operating point of the three-phase-self-excited induction motor, when it operates at asynchronous state, is effective. The result of experiement is primarily the same as that of the theoretical computation.