| 摘要 |
A short pitched switched reluctance motor (SRM) is controlled by applying current to a winding L2 in alternating opposite directions. Current is thereby be driven first in one direction and then in a second direction through the winding L2, and the direction of current flow through the coil L2 may be in a first direction for one cycle of the motor and in the second direction for a subsequent cycle of the SRM. The voltages are controlled by a H-bridge 10, in order to reduce the power flowing through circuit components and safely enable a lower rating for the circuit elements. Current may be controlled by applying a first positive voltage to a winding L2 and a second opposite negative voltage to the same winding L2, the second being applied during the first. The positive pulse and negative pulse may be centre aligned. The system may also reduce torque ripple, by reversing current direction at the frequency of the torque ripple. |
