| 摘要 |
<p>PCT No. PCT/EP94/01916 Sec. 371 Date May 16, 1997 Sec. 102(e) Date May 16, 1997 PCT Filed Jun. 13, 1994 PCT Pub. No. WO95/34947 PCT Pub. Date Dec. 21, 1995A 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 is reached after a zero crossing reference angle. Two ranges of operation called "chop" range and blocked voltage range must be differentiated. The switching-off angle 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 maximize 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> |
