| 摘要 |
<p>A process is disclosed for controlling the switching-off process of the branches of a reluctance engine whose stator is provided with windings to which are transmitted current pulses calculated as a function of angular position and speed of rotation of the rotor according to a predetermined algorithm. The excited branch is switched off when a switching-off angle (VP) is reached after a zero crossing (vo) reference angle. Two ranges of operation called 'chop' range and blocked voltage range must be differentiated. The switching-off angle (VP) for both ranges of operation of the reluctance engine is calculated according to the same algorithm and is set by a regulator. In the lower speed of rotation range, the 'chop' range, a pulse width modulated voltage is applied to the conductive branch and in the upper range, the blocked voltage range, a constant voltage is applied. In both ranges, the switching-off angle is calculated from engine parameters and actual operation values to maximise torque yield and to trigger the switching-off process by converting said values into a switching-off pulse that switches off the conductive branch.</p> |
