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|All Authors / Contributors:||
Hala Hannoun; Claude Marchand; Université de Paris-Sud. Faculté des Sciences d'Orsay (Essonne).
|Description:||1 vol. (180 p.) : ill. ; 30 cm.|
|Responsibility:||Hala Hannoun ; [sous la direction de] C. Marchand.|
The present study concerns the implementation of the switched reluctance machine in variable speed motor drives. In order to make this machine more competitive in various industrial applications, we were interested in its control (current, torque, speed) according to both conduction types: discontinuous and continuous modes. An important part of this work was dedicated to realise the experimental tests. The prototype electromagnetic characteristics (flux, torque) are obtained by numerical calculation and are validated on the test bench. From these data, an analytical expression of the inductance is proposed for the development of a new PI current regulator with variable gains: the gain adaptation, with respect to the phase current and the rotor position, compensates the inductance variation and keeps a well defined dynamic of the current closed loop. Two methods to regulate the torque are proposed. The first one, based on the instantaneous value of the torque, reduces considerably the torque ripple but requires a high bandwidth current regulator. The second one, which deals with the torque mean value, is based on optimal parameters maps. For the same sizing of the system (power supply-machine-converter), the high speed performances are considerably increased due to the continuous conduction mode: the torque is increased to a level that allows keeping the maximal power constant over a wide speed range.