| 摘要 |
PROBLEM TO BE SOLVED: To prevent torque from lowering due to the delay of an energizing current and reduce noise and vibration, even at a high rotational speed. SOLUTION: By energizing each phase coil which is wound around a stator salient pole of a reluctance motor so that each energizing pattern turns into a trapezoidal wave, rotational torque is generated and a rotor rotates. By computing energizing current value, based on MAP1 of an inclination α1 at a low rotational speed of the rotor, MAP2 of an inclination angle α2 at an intermediate speed, and MAP3 of an inclination angle α3 at a high speed, MA of the rotational speed of the rotor (α1<α2<α3), the energizing pattern of each phase coil becomes the same form as that of the MAP used. Since the rotational speed is higher, the inclination angle of the MAP is increased more, so that the rising and falling of the current are carried out abruptly even at high rotational speed. The torque is suppressed from lowering, thereby reducing noise and vibration. |
