Abstract:
This paper describes a direct self-control (DSC)
scheme for synchronous reluctance motor drives. The presented
DSC scheme develops a new torque control methodology that
does not require any position transducer to synchronize the stator
current vector with the rotor. Such a control strategy differs
from the conventional DSC approach in order to fit some specific
requirements of synchronous reluctance (SyncRel) machines.
First, torque and rotor position are controlled instead of torque
and stator flux as in a conventional DSC scheme. Second, the
operating sector is selected according to the actual position of
the current vector rather than the position of the stator flux.
The proposed methodology allows simplifying implementation
of the torque control on SyncRel drives and reducing the global
cost for medium-performance electric drives. Simulations and
experimental tests on a 1.5-kW motor drive are provided to
evaluate the consistency and the performance of the proposed
control technique.
