| 摘要 |
A modulation control type of AC motor includes a modulator (11) and a modulation motor (12). The modulation motor (12) has the structure in which a DC field power source of a two-phase synchronous motor is replaced by a load and a DC main magnetic flux is replaced by an alternate main magnetic flux. There is no interference between the frequency of an AC power source (16) and the frequency of a modulation signal. Therefore, the synchronous torque and the rotation speed can be controlled separately and independently. The controllable range is wide. <IMAGE> |
