| 摘要 |
A single-phase induction motor includes a main winding M, an auxiliary winding S, a run capacitor Cr, and a subsidiary start device. The auxiliary winding S is configured such that the number of turns of the auxiliary winding S, through which a current flows, varies according to the operating mode of the motor. When the motor starts, the number of turns of the auxiliary winding S, through which a current flows, is reduced, thereby increasing the start efficiency of the motor. When the motor runs in normal mode, the number of turns of the auxiliary winding S, through which a current flows, is increased, thereby increasing the operational efficiency of the motor. |
