| 摘要 |
PURPOSE:To set a magnetomotive force phase difference angle, e.g. at 110 deg.-165 deg. to take out not only a torque with a permanent magnet but also a reaction torque as an external output by controlling a current flowing through the stator winding of an internal magnet type AC motor by means of an inverter. CONSTITUTION:A two-phase/three-phase converter 36 two-phase/three-phase converts direct-axis and quadrature-axis current command values ic', iq' to obtain three-phase current command values iu' iv', iw' and to transmit said command values iu', iv', iw' to an inverter. A PM motor 1 generates a torque corresponding to a load torque in a state, where a magnetomotive force phase difference angle is kept always at a constant command value theta'' (specific value of 110 deg.-165 deg.), and also rotates at a command rotational speed. In this case, a high torque can be obtained because a composite torque T is high in the region with the command value theta'' of 110 deg.-165 deg.. |
